diff --git a/README.md b/README.md
index d81d68c8..4b0eb838 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,11 @@ ThinkPHP5在保持快速开发和大道至简的核心理念不变的同时，PH
  + 真正惰性加载
  + 分布式环境支持
  + 支持Composer
+ + 支持MongoDb
 
 > ThinkPHP5的运行环境要求PHP5.4以上。
 
-详细开发文档参考 [ThinkPHP5完全开发手册](http://www.kancloud.cn/manual/thinkphp5)
+详细开发文档参考 [ThinkPHP5完全开发手册](http://www.kancloud.cn/manual/thinkphp5) 以及[ThinkPHP5入门系列教程](http://www.kancloud.cn/special/thinkphp5_quickstart)
 
 ## 目录结构
 
diff --git a/base.php b/base.php
index fdbd5d90..63fc16c3 100644
--- a/base.php
+++ b/base.php
@@ -9,7 +9,7 @@
 // | Author: liu21st <liu21st@gmail.com>
 // +----------------------------------------------------------------------
 
-define('THINK_VERSION', '5.0.5beta');
+define('THINK_VERSION', '5.0.6');
 define('THINK_START_TIME', microtime(true));
 define('THINK_START_MEM', memory_get_usage());
 define('EXT', '.php');
diff --git a/convention.php b/convention.php
index c66ef583..887b076d 100644
--- a/convention.php
+++ b/convention.php
@@ -107,6 +107,8 @@ return [
     'request_cache'          => false,
     // 请求缓存有效期
     'request_cache_expire'   => null,
+    // 全局请求缓存排除规则
+    'request_cache_except'   => [],
 
     // +----------------------------------------------------------------------
     // | 模板设置
@@ -204,7 +206,7 @@ return [
         // 是否自动开启 SESSION
         'auto_start'     => true,
         'httponly'       => true,
-        'secure'         => true,
+        'secure'         => false,
     ],
 
     // +----------------------------------------------------------------------
@@ -272,10 +274,6 @@ return [
         'datetime_format' => 'Y-m-d H:i:s',
         // 是否需要进行SQL性能分析
         'sql_explain'     => false,
-        // Builder类
-        'builder'         => '',
-        // Query类
-        'query'           => '\\think\\db\\Query',
     ],
 
     //分页配置
diff --git a/helper.php b/helper.php
index 83dbddda..da0dc9c5 100644
--- a/helper.php
+++ b/helper.php
@@ -23,6 +23,7 @@ use think\exception\HttpResponseException;
 use think\Lang;
 use think\Loader;
 use think\Log;
+use think\Model;
 use think\Request;
 use think\Response;
 use think\Session;
@@ -329,7 +330,7 @@ if (!function_exists('cookie')) {
             Cookie::clear($value);
         } elseif ('' === $value) {
             // 获取
-            return 0 === strpos($name, '?') ? Cookie::has(substr($name, 1), $option) : Cookie::get($name);
+            return 0 === strpos($name, '?') ? Cookie::has(substr($name, 1), $option) : Cookie::get($name, $option);
         } elseif (is_null($value)) {
             // 删除
             return Cookie::delete($name);
@@ -494,15 +495,16 @@ if (!function_exists('redirect')) {
      * @param mixed         $url 重定向地址 支持Url::build方法的地址
      * @param array|integer $params 额外参数
      * @param integer       $code 状态码
+     * @param array         $with 隐式传参
      * @return \think\response\Redirect
      */
-    function redirect($url = [], $params = [], $code = 302)
+    function redirect($url = [], $params = [], $code = 302, $with = [])
     {
         if (is_integer($params)) {
             $code   = $params;
             $params = [];
         }
-        return Response::create($url, 'redirect', $code)->params($params);
+        return Response::create($url, 'redirect', $code)->params($params)->with($with);
     }
 }
 
@@ -548,3 +550,37 @@ if (!function_exists('token')) {
         return '<input type="hidden" name="' . $name . '" value="' . $token . '" />';
     }
 }
+
+if (!function_exists('load_relation')) {
+    /**
+     * 延迟预载入关联查询
+     * @param mixed $resultSet 数据集
+     * @param mixed $relation 关联
+     * @return array
+     */
+    function load_relation($resultSet, $relation)
+    {
+        $item = current($resultSet);
+        if ($item instanceof Model) {
+            $item->eagerlyResultSet($resultSet, $relation);
+        }
+        return $resultSet;
+    }
+}
+
+if (!function_exists('collection')) {
+    /**
+     * 数组转换为数据集对象
+     * @param array $resultSet 数据集数组
+     * @return \think\model\Collection|\think\Collection
+     */
+    function collection($resultSet)
+    {
+        $item = current($resultSet);
+        if ($item instanceof Model) {
+            return \think\model\Collection::make($resultSet);
+        } else {
+            return \think\Collection::make($resultSet);
+        }
+    }
+}
diff --git a/lang/zh-cn.php b/lang/zh-cn.php
index 6d33b0ce..c6c5a50f 100644
--- a/lang/zh-cn.php
+++ b/lang/zh-cn.php
@@ -63,4 +63,6 @@ return [
     'route name not exists'     => '路由标识不存在（或参数不够）',
     'invalid request'           => '非法请求',
     'bind attr has exists'      => '模型的属性已经存在',
+    'relation data not exists'  => '关联数据不存在',
+    'relation not support'      => '关联不支持',
 ];
diff --git a/library/think/App.php b/library/think/App.php
index 77721112..963d8b35 100644
--- a/library/think/App.php
+++ b/library/think/App.php
@@ -118,7 +118,7 @@ class App
             // 监听app_begin
             Hook::listen('app_begin', $dispatch);
             // 请求缓存检查
-            $request->cache($config['request_cache'], $config['request_cache_expire']);
+            $request->cache($config['request_cache'], $config['request_cache_expire'], $config['request_cache_except']);
 
             switch ($dispatch['type']) {
                 case 'redirect':
@@ -336,7 +336,7 @@ class App
                 $request->module($module);
                 $config = self::init($module);
                 // 模块请求缓存检查
-                $request->cache($config['request_cache'], $config['request_cache_expire']);
+                $request->cache($config['request_cache'], $config['request_cache_expire'], $config['request_cache_except']);
             } else {
                 throw new HttpException(404, 'module not exists:' . $module);
             }
diff --git a/library/think/Cache.php b/library/think/Cache.php
index 12107091..9e4b30ef 100644
--- a/library/think/Cache.php
+++ b/library/think/Cache.php
@@ -81,9 +81,9 @@ class Cache
      * @param string $name 缓存标识
      * @return Driver
      */
-    public static function store($name)
+    public static function store($name = '')
     {
-        if ('complex' == Config::get('cache.type')) {
+        if ('' !== $name && 'complex' == Config::get('cache.type')) {
             self::connect(Config::get('cache.' . $name), strtolower($name));
         }
         return self::$handler;
diff --git a/library/think/Db.php b/library/think/Db.php
index a29dac3e..00f719e0 100644
--- a/library/think/Db.php
+++ b/library/think/Db.php
@@ -13,7 +13,6 @@ namespace think;
 
 use think\db\Connection;
 use think\db\Query;
-use think\paginator\Collection as PaginatorCollection;
 
 /**
  * Class Db
@@ -25,21 +24,21 @@ use think\paginator\Collection as PaginatorCollection;
  * @method Query union(mixed $union, boolean $all = false) static UNION查询
  * @method Query limit(mixed $offset, integer $length = null) static 查询LIMIT
  * @method Query order(mixed $field, string $order = null) static 查询ORDER
- * @method Query cache(mixed $key = true , integer $expire = null) static 设置查询缓存
+ * @method Query cache(mixed $key = null , integer $expire = null) static 设置查询缓存
  * @method mixed value(string $field) static 获取某个字段的值
  * @method array column(string $field, string $key = '') static 获取某个列的值
  * @method Query view(mixed $join, mixed $field = null, mixed $on = null, string $type = 'INNER') static 视图查询
- * @method mixed find(mixed $data = []) static 查询单个记录
- * @method mixed select(mixed $data = []) static 查询多个记录
+ * @method mixed find(mixed $data = null) static 查询单个记录
+ * @method mixed select(mixed $data = null) static 查询多个记录
  * @method integer insert(array $data, boolean $replace = false, boolean $getLastInsID = false, string $sequence = null) static 插入一条记录
  * @method integer insertGetId(array $data, boolean $replace = false, string $sequence = null) static 插入一条记录并返回自增ID
  * @method integer insertAll(array $dataSet) static 插入多条记录
  * @method integer update(array $data) static 更新记录
- * @method integer delete(mixed $data = []) static 删除记录
+ * @method integer delete(mixed $data = null) static 删除记录
  * @method boolean chunk(integer $count, callable $callback, string $column = null) static 分块获取数据
- * @method mixed query(string $sql, array $bind = [], boolean $fetch = false, boolean $master = false, mixed $class = false) static SQL查询
+ * @method mixed query(string $sql, array $bind = [], boolean $fetch = false, boolean $master = false, mixed $class = null) static SQL查询
  * @method integer execute(string $sql, array $bind = [], boolean $fetch = false, boolean $getLastInsID = false, string $sequence = null) static SQL执行
- * @method PaginatorCollection paginate(integer $listRows = 15, mixed $simple = false, array $config = []) static 分页查询
+ * @method Paginator paginate(integer $listRows = 15, mixed $simple = null, array $config = []) static 分页查询
  * @method mixed transaction(callable $callback) static 执行数据库事务
  * @method void startTrans() static 启动事务
  * @method void commit() static 用于非自动提交状态下面的查询提交
diff --git a/library/think/Model.php b/library/think/Model.php
index e875d252..42c08410 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -14,6 +14,7 @@ namespace think;
 use InvalidArgumentException;
 use think\db\Query;
 use think\Exception\ValidateException;
+use think\model\Collection as ModelCollection;
 use think\model\Relation;
 use think\model\relation\BelongsTo;
 use think\model\relation\BelongsToMany;
@@ -22,23 +23,11 @@ use think\model\relation\HasManyThrough;
 use think\model\relation\HasOne;
 use think\model\relation\MorphMany;
 use think\model\relation\MorphTo;
-use think\paginator\Collection as PaginatorCollection;
 
 /**
  * Class Model
  * @package think
- * @method static PaginatorCollection paginate(integer $listRows = 15, boolean $simple = false, array $config = []) 分页查询
- * @method static mixed value($field, $default = null) 得到某个字段的值
- * @method static array column($field, $key = '') 得到某个列的数组
- * @method static integer count($field = '*') COUNT查询
- * @method static integer sum($field = '*') SUM查询
- * @method static integer min($field = '*') MIN查询
- * @method static integer max($field = '*') MAX查询
- * @method static integer avg($field = '*') AVG查询
- * @method static setField($field, $value = '')
- * @method static Query where($field, $op = null, $condition = null) 指定AND查询条件
- * @method static static findOrFail($data = null) 查找单条记录 如果不存在则抛出异常
- *
+ * @mixin Query
  */
 abstract class Model implements \JsonSerializable, \ArrayAccess
 {
@@ -107,6 +96,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     protected $batchValidate = false;
     // 查询数据集对象
     protected $resultSetType;
+    // 关联自动写入
+    protected $relationWrite;
     //
     protected static $db;
 
@@ -153,6 +144,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             $this->dateFormat = $this->db(false)->getConfig('datetime_format');
         }
 
+        if (is_null($this->resultSetType)) {
+            $this->resultSetType = $this->db(false)->getConfig('resultset_type');
+        }
         // 执行初始化操作
         $this->initialize();
     }
@@ -221,12 +215,13 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      * @return void
      */
     protected static function init()
-    {}
+    {
+    }
 
     /**
      * 设置数据对象值
      * @access public
-     * @param mixed $data 数据或者属性名
+     * @param mixed $data  数据或者属性名
      * @param mixed $value 值
      * @return $this
      */
@@ -273,9 +268,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 修改器 设置数据对象值
      * @access public
-     * @param string    $name 属性名
-     * @param mixed     $value 属性值
-     * @param array     $data 数据
+     * @param string $name  属性名
+     * @param mixed  $value 属性值
+     * @param array  $data  数据
      * @return $this
      */
     public function setAttr($name, $value, $data = [])
@@ -308,7 +303,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 自动写入时间戳
      * @access public
-     * @param string         $name 时间戳字段
+     * @param string $name 时间戳字段
      * @return mixed
      */
     protected function autoWriteTimestamp($name)
@@ -330,7 +325,12 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                     $value = $_SERVER['REQUEST_TIME'];
                     break;
             }
-        } elseif (is_string($this->autoWriteTimestamp) && in_array(strtolower($this->autoWriteTimestamp), ['datetime', 'date', 'timestamp'])) {
+        } elseif (is_string($this->autoWriteTimestamp) && in_array(strtolower($this->autoWriteTimestamp), [
+            'datetime',
+            'date',
+            'timestamp',
+        ])
+        ) {
             $value = $this->formatDateTime($_SERVER['REQUEST_TIME'], $this->dateFormat);
         } else {
             $value = $this->formatDateTime($_SERVER['REQUEST_TIME'], $this->dateFormat, true);
@@ -341,16 +341,16 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 时间日期字段格式化处理
      * @access public
-     * @param mixed  $time 时间日期表达式
-     * @param mixed  $format 日期格式
-     * @param bool   $timestamp 是否进行时间戳转换
+     * @param mixed $time      时间日期表达式
+     * @param mixed $format    日期格式
+     * @param bool  $timestamp 是否进行时间戳转换
      * @return mixed
      */
     protected function formatDateTime($time, $format, $timestamp = false)
     {
         if (false !== strpos($format, '\\')) {
             $time = new $format($time);
-        } elseif (!$timestamp) {
+        } elseif (!$timestamp && false !== $format) {
             $time = date($format, $time);
         }
         return $time;
@@ -359,8 +359,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 数据写入 类型转换
      * @access public
-     * @param mixed         $value 值
-     * @param string|array  $type 要转换的类型
+     * @param mixed        $value 值
+     * @param string|array $type  要转换的类型
      * @return mixed
      */
     protected function writeTransform($value, $type)
@@ -438,7 +438,12 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             // 类型转换
             $value = $this->readTransform($value, $this->type[$name]);
         } elseif (in_array($name, [$this->createTime, $this->updateTime])) {
-            if (is_string($this->autoWriteTimestamp) && in_array(strtolower($this->autoWriteTimestamp), ['datetime', 'date', 'timestamp'])) {
+            if (is_string($this->autoWriteTimestamp) && in_array(strtolower($this->autoWriteTimestamp), [
+                'datetime',
+                'date',
+                'timestamp',
+            ])
+            ) {
                 $value = $this->formatDateTime(strtotime($value), $this->dateFormat);
             } else {
                 $value = $this->formatDateTime($value, $this->dateFormat);
@@ -462,8 +467,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 数据读取 类型转换
      * @access public
-     * @param mixed         $value 值
-     * @param string|array  $type 要转换的类型
+     * @param mixed        $value 值
+     * @param string|array $type  要转换的类型
      * @return mixed
      */
     protected function readTransform($value, $type)
@@ -523,8 +528,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 设置需要追加的输出属性
      * @access public
-     * @param array $append 属性列表
-     * @param bool  $override  是否覆盖
+     * @param array $append   属性列表
+     * @param bool  $override 是否覆盖
      * @return $this
      */
     public function append($append = [], $override = false)
@@ -536,9 +541,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 设置附加关联对象的属性
      * @access public
-     * @param string        $relation 关联方法
-     * @param string|array  $append  追加属性名
+     * @param string       $relation 关联方法
+     * @param string|array $append   追加属性名
      * @return $this
+     * @throws Exception
      */
     public function appendRelationAttr($relation, $append)
     {
@@ -562,8 +568,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 设置需要隐藏的输出属性
      * @access public
-     * @param array $hidden 属性列表
-     * @param bool  $override  是否覆盖
+     * @param array $hidden   属性列表
+     * @param bool  $override 是否覆盖
      * @return $this
      */
     public function hidden($hidden = [], $override = false)
@@ -574,8 +580,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
 
     /**
      * 设置需要输出的属性
+     * @access public
      * @param array $visible
-     * @param bool  $override  是否覆盖
+     * @param bool  $override 是否覆盖
      * @return $this
      */
     public function visible($visible = [], $override = false)
@@ -584,6 +591,56 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         return $this;
     }
 
+    /**
+     * 解析隐藏及显示属性
+     * @access protected
+     * @param array $attrs  属性
+     * @param array $result 结果集
+     * @param bool  $visible
+     * @return array
+     */
+    protected function parseAttr($attrs, &$result, $visible = true)
+    {
+        $array = [];
+        foreach ($attrs as $key => $val) {
+            if (is_array($val)) {
+                if ($visible) {
+                    $array[] = $key;
+                }
+                $result[$key] = $val;
+            } elseif (strpos($val, '.')) {
+                list($key, $name) = explode('.', $val);
+                if ($visible) {
+                    $array[] = $key;
+                }
+                $result[$key][] = $name;
+            } else {
+                $array[] = $val;
+            }
+        }
+        return $array;
+    }
+
+    /**
+     * 转换子模型对象
+     * @access protected
+     * @param Model|ModelCollection $model
+     * @param                  $visible
+     * @param                  $hidden
+     * @param                  $key
+     * @return array
+     */
+    protected function subToArray($model, $visible, $hidden, $key)
+    {
+        // 关联模型对象
+        if (isset($visible[$key])) {
+            $model->visible($visible[$key]);
+        } elseif (isset($hidden[$key])) {
+            $model->hidden($hidden[$key]);
+        }
+        return $model->toArray();
+    }
+
     /**
      * 转换当前模型对象为数组
      * @access public
@@ -591,26 +648,29 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      */
     public function toArray()
     {
-        $item = [];
-
-        //过滤属性
+        $item    = [];
+        $visible = [];
+        $hidden  = [];
+        // 过滤属性
         if (!empty($this->visible)) {
-            $data = array_intersect_key($this->data, array_flip($this->visible));
+            $array = $this->parseAttr($this->visible, $visible);
+            $data  = array_intersect_key($this->data, array_flip($array));
         } elseif (!empty($this->hidden)) {
-            $data = array_diff_key($this->data, array_flip($this->hidden));
+            $array = $this->parseAttr($this->hidden, $hidden, false);
+            $data  = array_diff_key($this->data, array_flip($array));
         } else {
             $data = $this->data;
         }
 
         foreach ($data as $key => $val) {
-            if ($val instanceof Model || $val instanceof Collection) {
+            if ($val instanceof Model || $val instanceof ModelCollection) {
                 // 关联模型对象
-                $item[$key] = $val->toArray();
+                $item[$key] = $this->subToArray($val, $visible, $hidden, $key);
             } elseif (is_array($val) && reset($val) instanceof Model) {
                 // 关联模型数据集
                 $arr = [];
                 foreach ($val as $k => $value) {
-                    $arr[$k] = $value->toArray();
+                    $arr[$k] = $this->subToArray($value, $visible, $hidden, $k);
                 }
                 $item[$key] = $arr;
             } else {
@@ -620,8 +680,19 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         }
         // 追加属性（必须定义获取器）
         if (!empty($this->append)) {
-            foreach ($this->append as $name) {
-                $item[$name] = $this->getAttr($name);
+            foreach ($this->append as $key => $name) {
+                if (is_array($name)) {
+                    // 追加关联对象属性
+                    $relation   = $this->getAttr($key);
+                    $item[$key] = $relation->append($name)->toArray();
+                } elseif (strpos($name, '.')) {
+                    list($key, $attr) = explode('.', $name);
+                    // 追加关联对象属性
+                    $relation   = $this->getAttr($key);
+                    $item[$key] = $relation->append([$attr])->toArray();
+                } else {
+                    $item[$name] = $this->getAttr($name);
+                }
             }
         }
         return !empty($item) ? $item : [];
@@ -630,7 +701,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 转换当前模型对象为JSON字符串
      * @access public
-     * @param integer   $options json参数
+     * @param integer $options json参数
      * @return string
      */
     public function toJson($options = JSON_UNESCAPED_UNICODE)
@@ -641,15 +712,15 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 转换当前模型数据集为数据集对象
      * @access public
-     * @param array|Collection   $collection 数据集
-     * @return Collection
+     * @param array|\think\Collection $collection 数据集
+     * @return \think\Collection
      */
     public function toCollection($collection)
     {
         if ($this->resultSetType) {
             if ('collection' == $this->resultSetType) {
-                $collection = new Collection($collection);
-            } else {
+                $collection = new ModelCollection($collection);
+            } elseif (false !== strpos($this->resultSetType, '\\')) {
                 $class      = $this->resultSetType;
                 $collection = new $class($collection);
             }
@@ -657,6 +728,21 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         return $collection;
     }
 
+    /**
+     * 关联数据一起更新
+     * @access public
+     * @param mixed $relation 关联
+     * @return $this
+     */
+    public function together($relation)
+    {
+        if (is_string($relation)) {
+            $relation = explode(',', $relation);
+        }
+        $this->relationWrite = $relation;
+        return $this;
+    }
+
     /**
      * 获取模型对象的主键
      * @access public
@@ -694,9 +780,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 保存当前数据对象
      * @access public
-     * @param array     $data 数据
-     * @param array     $where 更新条件
-     * @param string    $sequence     自增序列名
+     * @param array  $data     数据
+     * @param array  $where    更新条件
+     * @param string $sequence 自增序列名
      * @return integer|false
      */
     public function save($data = [], $where = [], $sequence = null)
@@ -715,8 +801,32 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             }
         }
 
+        // 自动关联写入
+        if (!empty($this->relationWrite)) {
+            $relation = [];
+            foreach ($this->relationWrite as $key => $name) {
+                if (!is_numeric($key)) {
+                    $relation[$key] = [];
+                    foreach ($name as $val) {
+                        if (isset($this->data[$val])) {
+                            $relation[$key][$val] = $this->data[$val];
+                            unset($this->data[$val]);
+                        }
+                    }
+                } elseif (isset($this->data[$name])) {
+                    $relation[$name] = $this->data[$name];
+                    if (!$this->isUpdate) {
+                        unset($this->data[$name]);
+                    }
+                }
+            }
+        }
+
         // 检测字段
         if (!empty($this->field)) {
+            if (true === $this->field) {
+                $this->field = $this->db(false)->getTableInfo('', 'fields');
+            }
             foreach ($this->data as $key => $val) {
                 if (!in_array($key, $this->field)) {
                     unset($this->data[$key]);
@@ -775,7 +885,33 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 unset($data[$pk]);
             }
 
+            // 关联更新
+            if (isset($relation)) {
+                foreach ($relation as $name => $val) {
+                    if (isset($data[$name])) {
+                        unset($data[$name]);
+                    }
+                }
+            }
+
+            // 模型更新
             $result = $this->db()->where($where)->update($data);
+
+            // 关联更新
+            if (isset($relation)) {
+                foreach ($relation as $name => $val) {
+                    if ($val instanceof Model) {
+                        $val->save();
+                    } else {
+                        unset($this->data[$name]);
+                        $model = $this->getAttr($name);
+                        if ($model instanceof Model) {
+                            $model->save($val);
+                        }
+                    }
+                }
+            }
+
             // 清空change
             $this->change = [];
             // 更新回调
@@ -802,6 +938,15 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                     $this->data[$pk] = $insertId;
                 }
             }
+
+            // 关联写入
+            if (isset($relation)) {
+                foreach ($relation as $name => $val) {
+                    $method = Loader::parseName($name, 1, false);
+                    $this->$method()->save($val);
+                }
+            }
+
             // 标记为更新
             $this->isUpdate = true;
             // 清空change
@@ -818,9 +963,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 保存多个数据到当前数据对象
      * @access public
-     * @param array     $dataSet 数据
-     * @param boolean   $replace 是否自动识别更新和写入
+     * @param array   $dataSet 数据
+     * @param boolean $replace 是否自动识别更新和写入
      * @return array|false
+     * @throws \Exception
      */
     public function saveAll($dataSet, $replace = true)
     {
@@ -860,18 +1006,33 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 设置允许写入的字段
      * @access public
-     * @param bool|array $field 允许写入的字段 如果为true只允许写入数据表字段
+     * @param mixed $field 允许写入的字段 如果为true只允许写入数据表字段
      * @return $this
      */
     public function allowField($field)
     {
-        if (true === $field) {
-            $field = $this->db(false)->getTableInfo('', 'fields');
+        if (is_string($field)) {
+            $field = explode(',', $field);
         }
         $this->field = $field;
         return $this;
     }
 
+    /**
+     * 设置只读字段
+     * @access public
+     * @param mixed $field 只读字段
+     * @return $this
+     */
+    public function readonly($field)
+    {
+        if (is_string($field)) {
+            $field = explode(',', $field);
+        }
+        $this->readonly = $field;
+        return $this;
+    }
+
     /**
      * 是否为更新数据
      * @access public
@@ -918,7 +1079,29 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             return false;
         }
 
-        $result = $this->db()->delete($this->data);
+        // 删除条件
+        $pk = $this->getPk();
+        if (isset($this->data[$pk])) {
+            $where = [$pk => $this->data[$pk]];
+        } elseif (!empty($this->updateWhere)) {
+            $where = $this->updateWhere;
+        } else {
+            $where = null;
+        }
+
+        // 删除当前模型数据
+        $result = $this->db()->where($where)->delete();
+
+        // 关联删除
+        if (!empty($this->relationWrite)) {
+            foreach ($this->relationWrite as $key => $name) {
+                $name  = is_numeric($key) ? $name : $key;
+                $model = $this->getAttr($name);
+                if ($model instanceof Model) {
+                    $model->delete();
+                }
+            }
+        }
 
         $this->trigger('after_delete', $this);
         return $result;
@@ -939,8 +1122,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 设置字段验证
      * @access public
-     * @param array|string|bool $rule 验证规则 true表示自动读取验证器类
-     * @param array             $msg 提示信息
+     * @param array|string|bool $rule  验证规则 true表示自动读取验证器类
+     * @param array             $msg   提示信息
      * @param bool              $batch 批量验证
      * @return $this
      */
@@ -973,8 +1156,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 自动验证数据
      * @access protected
-     * @param array $data 验证数据
-     * @param mixed $rule 验证规则
+     * @param array $data  验证数据
+     * @param mixed $rule  验证规则
      * @param bool  $batch 批量验证
      * @return bool
      */
@@ -1025,9 +1208,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 注册回调方法
      * @access public
-     * @param string        $event 事件名
-     * @param callable      $callback 回调方法
-     * @param bool          $override 是否覆盖
+     * @param string   $event    事件名
+     * @param callable $callback 回调方法
+     * @param bool     $override 是否覆盖
      * @return void
      */
     public static function event($event, $callback, $override = false)
@@ -1042,8 +1225,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 触发事件
      * @access protected
-     * @param string    $event 事件名
-     * @param mixed     $params 传入参数（引用）
+     * @param string $event  事件名
+     * @param mixed  $params 传入参数（引用）
      * @return bool
      */
     protected function trigger($event, &$params)
@@ -1064,8 +1247,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 写入数据
      * @access public
-     * @param array         $data 数据数组
-     * @param array|true    $field 允许字段
+     * @param array      $data  数据数组
+     * @param array|true $field 允许字段
      * @return $this
      */
     public static function create($data = [], $field = null)
@@ -1081,9 +1264,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 更新数据
      * @access public
-     * @param array         $data 数据数组
-     * @param array         $where 更新条件
-     * @param array|true    $field 允许字段
+     * @param array      $data  数据数组
+     * @param array      $where 更新条件
+     * @param array|true $field 允许字段
      * @return $this
      */
     public static function update($data = [], $where = [], $field = null)
@@ -1107,6 +1290,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      */
     public static function get($data = null, $with = [], $cache = false)
     {
+        if (true === $with || is_int($with)) {
+            $cache = $with;
+            $with  = [];
+        }
         $query = static::parseQuery($data, $with, $cache);
         return $query->find($data);
     }
@@ -1122,6 +1309,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      */
     public static function all($data = null, $with = [], $cache = false)
     {
+        if (true === $with || is_int($with)) {
+            $cache = $with;
+            $with  = [];
+        }
         $query = static::parseQuery($data, $with, $cache);
         return $query->select($data);
     }
@@ -1129,9 +1320,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 分析查询表达式
      * @access public
-     * @param mixed         $data 主键列表或者查询条件（闭包）
-     * @param string        $with 关联预查询
-     * @param bool          $cache 是否缓存
+     * @param mixed  $data  主键列表或者查询条件（闭包）
+     * @param string $with  关联预查询
+     * @param bool   $cache 是否缓存
      * @return Query
      */
     protected static function parseQuery(&$data, $with, $cache)
@@ -1183,9 +1374,9 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 命名范围
      * @access public
-     * @param string|array|Closure  $name 命名范围名称 逗号分隔
-     * @param mixed                 ...$params 参数调用
-     * @return Model
+     * @param string|array|\Closure $name 命名范围名称 逗号分隔
+     * @internal  mixed                 ...$params 参数调用
+     * @return Model|Query
      */
     public static function scope($name)
     {
@@ -1213,7 +1404,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
 
     /**
      * 设置是否使用全局查询范围
-     * @param bool  $use 是否启用全局查询范围
+     * @param bool $use 是否启用全局查询范围
      * @access public
      * @return Model
      */
@@ -1227,29 +1418,31 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param string    $relation 关联方法名
-     * @param string    $operator 比较操作符
-     * @param integer   $count 个数
-     * @param string    $id 关联表的统计字段
-     * @return Model
+     * @param string  $relation 关联方法名
+     * @param mixed   $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @return Relation|Query
      */
     public static function has($relation, $operator = '>=', $count = 1, $id = '*')
     {
-        $model = new static();
-        return $model->$relation()->has($model, $operator, $count, $id);
+        $relation = (new static())->$relation();
+        if (is_array($operator) || $operator instanceof \Closure) {
+            return $relation->hasWhere($operator);
+        }
+        return $relation->has($operator, $count, $id);
     }
 
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param string    $relation 关联方法名
-     * @param mixed     $where 查询条件（数组或者闭包）
-     * @return Model
+     * @param string $relation 关联方法名
+     * @param mixed  $where    查询条件（数组或者闭包）
+     * @return Relation|Query
      */
     public static function hasWhere($relation, $where = [])
     {
-        $model = new static();
-        return $model->$relation()->hasWhere($model, $where);
+        return (new static())->$relation()->hasWhere($where);
     }
 
     /**
@@ -1281,8 +1474,22 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             $relations = explode(',', $relations);
         }
 
-        foreach ($relations as $relation) {
-            $this->data[$relation] = $this->$relation()->getRelation();
+        foreach ($relations as $key => $relation) {
+            $subRelation = '';
+            $closure     = null;
+            if ($relation instanceof \Closure) {
+                // 支持闭包查询过滤关联条件
+                $closure  = $relation;
+                $relation = $key;
+            }
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
+                list($relation, $subRelation) = explode('.', $relation, 2);
+            }
+            $method                = Loader::parseName($relation, 1, false);
+            $this->data[$relation] = $this->$method()->getRelation($subRelation, $closure);
         }
         return $this;
     }
@@ -1290,12 +1497,11 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 预载入关联查询 返回数据集
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 关联名
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array  $resultSet 数据集
+     * @param string $relation  关联名
      * @return array
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $class = '')
+    public function eagerlyResultSet(&$resultSet, $relation)
     {
         $relations = is_string($relation) ? explode(',', $relation) : $relation;
         foreach ($relations as $key => $relation) {
@@ -1305,23 +1511,25 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $closure  = $relation;
                 $relation = $key;
             }
-            if (strpos($relation, '.')) {
-                list($relation, $subRelation) = explode('.', $relation);
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
+                list($relation, $subRelation) = explode('.', $relation, 2);
             }
             $relation = Loader::parseName($relation, 1, false);
-            $this->$relation()->eagerlyResultSet($resultSet, $relation, $subRelation, $closure, $class);
+            $this->$relation()->eagerlyResultSet($resultSet, $relation, $subRelation, $closure);
         }
     }
 
     /**
      * 预载入关联查询 返回模型对象
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 关联名
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model  $result   数据对象
+     * @param string $relation 关联名
      * @return Model
      */
-    public function eagerlyResult(&$result, $relation, $class = '')
+    public function eagerlyResult(&$result, $relation)
     {
         $relations = is_string($relation) ? explode(',', $relation) : $relation;
 
@@ -1332,19 +1540,22 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
                 $closure  = $relation;
                 $relation = $key;
             }
-            if (strpos($relation, '.')) {
-                list($relation, $subRelation) = explode('.', $relation);
+            if (is_array($relation)) {
+                $subRelation = $relation;
+                $relation    = $key;
+            } elseif (strpos($relation, '.')) {
+                list($relation, $subRelation) = explode('.', $relation, 2);
             }
             $relation = Loader::parseName($relation, 1, false);
-            $this->$relation()->eagerlyResult($result, $relation, $subRelation, $closure, $class);
+            $this->$relation()->eagerlyResult($result, $relation, $subRelation, $closure);
         }
     }
 
     /**
      * 关联统计
      * @access public
-     * @param Model             $result 数据对象
-     * @param string|array      $relation 关联名
+     * @param Model        $result   数据对象
+     * @param string|array $relation 关联名
      * @return void
      */
     public function relationCount(&$result, $relation)
@@ -1356,21 +1567,41 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             if ($relation instanceof \Closure) {
                 $closure  = $relation;
                 $relation = $key;
+            } elseif (is_string($key)) {
+                $name     = $relation;
+                $relation = $key;
             }
             $relation = Loader::parseName($relation, 1, false);
             $count    = $this->$relation()->relationCount($result, $closure);
-            $result->setAttr(Loader::parseName($relation) . '_count', $count);
+            if (!isset($name)) {
+                $name = Loader::parseName($relation) . '_count';
+            }
+            $result->setAttr($name, $count);
         }
     }
 
+    /**
+     * 获取模型的默认外键名
+     * @access public
+     * @param string $name 模型名
+     * @return string
+     */
+    protected function getForeignKey($name)
+    {
+        if (strpos($name, '\\')) {
+            $name = basename(str_replace('\\', '/', $name));
+        }
+        return Loader::parseName($name) . '_id';
+    }
+
     /**
      * HAS ONE 关联定义
      * @access public
-     * @param string $model 模型名
+     * @param string $model      模型名
      * @param string $foreignKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
-     * @param string $joinType JOIN类型
+     * @param string $localKey   关联主键
+     * @param array  $alias      别名定义（已经废弃）
+     * @param string $joinType   JOIN类型
      * @return HasOne
      */
     public function hasOne($model, $foreignKey = '', $localKey = '', $alias = [], $joinType = 'INNER')
@@ -1378,97 +1609,93 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         // 记录当前关联信息
         $model      = $this->parseModel($model);
         $localKey   = $localKey ?: $this->getPk();
-        $foreignKey = $foreignKey ?: Loader::parseName($this->name) . '_id';
-        return new HasOne($this, $model, $foreignKey, $localKey, $alias, $joinType);
+        $foreignKey = $foreignKey ?: $this->getForeignKey($this->name);
+        return new HasOne($this, $model, $foreignKey, $localKey, $joinType);
     }
 
     /**
      * BELONGS TO 关联定义
      * @access public
-     * @param string $model 模型名
+     * @param string $model      模型名
      * @param string $foreignKey 关联外键
-     * @param string $otherKey 关联主键
-     * @param array  $alias 别名定义
-     * @param string $joinType JOIN类型
+     * @param string $localKey   关联主键
+     * @param array  $alias      别名定义（已经废弃）
+     * @param string $joinType   JOIN类型
      * @return BelongsTo
      */
-    public function belongsTo($model, $foreignKey = '', $otherKey = '', $alias = [], $joinType = 'INNER')
+    public function belongsTo($model, $foreignKey = '', $localKey = '', $alias = [], $joinType = 'INNER')
     {
         // 记录当前关联信息
         $model      = $this->parseModel($model);
-        $foreignKey = $foreignKey ?: Loader::parseName(basename(str_replace('\\', '/', $model))) . '_id';
-        $otherKey   = $otherKey ?: (new $model)->getPk();
-        return new BelongsTo($this, $model, $foreignKey, $otherKey, $alias, $joinType);
+        $foreignKey = $foreignKey ?: $this->getForeignKey($model);
+        $localKey   = $localKey ?: (new $model)->getPk();
+        return new BelongsTo($this, $model, $foreignKey, $localKey, $joinType);
     }
 
     /**
      * HAS MANY 关联定义
      * @access public
-     * @param string $model 模型名
+     * @param string $model      模型名
      * @param string $foreignKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
+     * @param string $localKey   关联主键
      * @return HasMany
      */
-    public function hasMany($model, $foreignKey = '', $localKey = '', $alias = [])
+    public function hasMany($model, $foreignKey = '', $localKey = '')
     {
         // 记录当前关联信息
         $model      = $this->parseModel($model);
         $localKey   = $localKey ?: $this->getPk();
-        $foreignKey = $foreignKey ?: Loader::parseName($this->name) . '_id';
-        return new HasMany($this, $model, $foreignKey, $localKey, $alias);
+        $foreignKey = $foreignKey ?: $this->getForeignKey($this->name);
+        return new HasMany($this, $model, $foreignKey, $localKey);
     }
 
     /**
      * HAS MANY 远程关联定义
      * @access public
-     * @param string $model 模型名
-     * @param string $through 中间模型名
+     * @param string $model      模型名
+     * @param string $through    中间模型名
      * @param string $foreignKey 关联外键
      * @param string $throughKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
+     * @param string $localKey   关联主键
      * @return HasManyThrough
      */
-    public function hasManyThrough($model, $through, $foreignKey = '', $throughKey = '', $localKey = '', $alias = [])
+    public function hasManyThrough($model, $through, $foreignKey = '', $throughKey = '', $localKey = '')
     {
         // 记录当前关联信息
         $model      = $this->parseModel($model);
         $through    = $this->parseModel($through);
         $localKey   = $localKey ?: $this->getPk();
-        $foreignKey = $foreignKey ?: Loader::parseName($this->name) . '_id';
-        $name       = Loader::parseName(basename(str_replace('\\', '/', $through)));
-        $throughKey = $throughKey ?: $name . '_id';
-        return new HasManyThrough($this, $model, $through, $foreignKey, $throughKey, $localKey, $alias);
+        $foreignKey = $foreignKey ?: $this->getForeignKey($this->name);
+        $throughKey = $throughKey ?: $this->getForeignKey($through);
+        return new HasManyThrough($this, $model, $through, $foreignKey, $throughKey, $localKey);
     }
 
     /**
      * BELONGS TO MANY 关联定义
      * @access public
-     * @param string $model 模型名
-     * @param string $table 中间表名
+     * @param string $model      模型名
+     * @param string $table      中间表名
      * @param string $foreignKey 关联外键
-     * @param string $localKey 当前模型关联键
-     * @param array  $alias 别名定义
+     * @param string $localKey   当前模型关联键
      * @return BelongsToMany
      */
-    public function belongsToMany($model, $table = '', $foreignKey = '', $localKey = '', $alias = [])
+    public function belongsToMany($model, $table = '', $foreignKey = '', $localKey = '')
     {
         // 记录当前关联信息
         $model      = $this->parseModel($model);
         $name       = Loader::parseName(basename(str_replace('\\', '/', $model)));
         $table      = $table ?: $this->db(false)->getTable(Loader::parseName($this->name) . '_' . $name);
         $foreignKey = $foreignKey ?: $name . '_id';
-        $localKey   = $localKey ?: Loader::parseName($this->name) . '_id';
-        return new BelongsToMany($this, $model, $table, $foreignKey, $localKey, $alias);
+        $localKey   = $localKey ?: $this->getForeignKey($this->name);
+        return new BelongsToMany($this, $model, $table, $foreignKey, $localKey);
     }
 
     /**
      * MORPH  MANY 关联定义
      * @access public
-     * @param string        $model 模型名
-     * @param string|array  $morph 多态字段信息
-     * @param string        $type 多态类型
+     * @param string       $model 模型名
+     * @param string|array $morph 多态字段信息
+     * @param string       $type  多态类型
      * @return MorphMany
      */
     public function morphMany($model, $morph = null, $type = '')
@@ -1492,8 +1719,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * MORPH TO 关联定义
      * @access public
-     * @param string|array  $morph 多态字段信息
-     * @param array         $alias 多态别名定义
+     * @param string|array $morph 多态字段信息
+     * @param array        $alias 多态别名定义
      * @return MorphTo
      */
     public function morphTo($morph = null, $alias = [])
@@ -1547,8 +1774,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     /**
      * 修改器 设置数据对象的值
      * @access public
-     * @param string    $name 名称
-     * @param mixed     $value 值
+     * @param string $name  名称
+     * @param mixed  $value 值
      * @return void
      */
     public function __set($name, $value)
@@ -1641,6 +1868,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
 
     /**
      * 模型事件快捷方法
+     * @param      $callback
+     * @param bool $override
      */
     protected static function beforeInsert($callback, $override = false)
     {
diff --git a/library/think/Paginator.php b/library/think/Paginator.php
index d2fe79d2..0c1bea8a 100644
--- a/library/think/Paginator.php
+++ b/library/think/Paginator.php
@@ -11,14 +11,19 @@
 
 namespace think;
 
-use think\paginator\Collection as PaginatorCollection;
+use ArrayAccess;
+use ArrayIterator;
+use Countable;
+use IteratorAggregate;
+use JsonSerializable;
+use Traversable;
 
-abstract class Paginator
+abstract class Paginator implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable
 {
     /** @var bool 是否为简洁模式 */
     protected $simple = false;
 
-    /** @var PaginatorCollection 数据集 */
+    /** @var Collection 数据集 */
     protected $items;
 
     /** @var integer 当前页 */
@@ -44,7 +49,7 @@ abstract class Paginator
         'fragment' => '',
     ];
 
-    protected function __construct($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
+    public function __construct($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
     {
         $this->options = array_merge($this->options, $options);
 
@@ -53,10 +58,11 @@ abstract class Paginator
         $this->simple   = $simple;
         $this->listRows = $listRows;
 
+        if (!$items instanceof Collection) {
+            $items = Collection::make($items);
+        }
+
         if ($simple) {
-            if (!$items instanceof Collection) {
-                $items = Collection::make($items);
-            }
             $this->currentPage = $this->setCurrentPage($currentPage);
             $this->hasMore     = count($items) > ($this->listRows);
             $items             = $items->slice(0, $this->listRows);
@@ -66,8 +72,7 @@ abstract class Paginator
             $this->currentPage = $this->setCurrentPage($currentPage);
             $this->hasMore     = $this->currentPage < $this->lastPage;
         }
-
-        $this->items = PaginatorCollection::make($items, $this);
+        $this->items = $items;
     }
 
     /**
@@ -77,12 +82,11 @@ abstract class Paginator
      * @param bool  $simple
      * @param null  $total
      * @param array $options
-     * @return PaginatorCollection
+     * @return Paginator
      */
     public static function make($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
     {
-        $paginator = new static($items, $listRows, $currentPage, $total, $simple, $options);
-        return $paginator->items;
+        return new static($items, $listRows, $currentPage, $total, $simple, $options);
     }
 
     protected function setCurrentPage($currentPage)
@@ -253,4 +257,113 @@ abstract class Paginator
      * @return mixed
      */
     abstract public function render();
+
+    public function items()
+    {
+        return $this->items->all();
+    }
+
+    public function getCollection()
+    {
+        return $this->items;
+    }
+
+    public function isEmpty()
+    {
+        return $this->items->isEmpty();
+    }
+
+    /**
+     * Retrieve an external iterator
+     * @return Traversable An instance of an object implementing <b>Iterator</b> or
+     * <b>Traversable</b>
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->items->all());
+    }
+
+    /**
+     * Whether a offset exists
+     * @param mixed $offset
+     * @return bool
+     */
+    public function offsetExists($offset)
+    {
+        return $this->items->offsetExists($offset);
+    }
+
+    /**
+     * Offset to retrieve
+     * @param mixed $offset
+     * @return mixed
+     */
+    public function offsetGet($offset)
+    {
+        return $this->items->offsetGet($offset);
+    }
+
+    /**
+     * Offset to set
+     * @param mixed $offset
+     * @param mixed $value
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->items->offsetSet($offset, $value);
+    }
+
+    /**
+     * Offset to unset
+     * @param mixed $offset
+     * @return void
+     * @since 5.0.0
+     */
+    public function offsetUnset($offset)
+    {
+        $this->items->offsetUnset($offset);
+    }
+
+    /**
+     * Count elements of an object
+     */
+    public function count()
+    {
+        return $this->items->count();
+    }
+
+    public function __toString()
+    {
+        return (string) $this->render();
+    }
+
+    public function toArray()
+    {
+        try {
+            $total = $this->total();
+        } catch (Exception $e) {
+            $total = null;
+        }
+
+        return [
+            'total'        => $total,
+            'per_page'     => $this->listRows(),
+            'current_page' => $this->currentPage(),
+            'data'         => $this->items->toArray()
+        ];
+    }
+
+    /**
+     * Specify data which should be serialized to JSON
+     */
+    public function jsonSerialize()
+    {
+        return $this->toArray();
+    }
+
+    public function __call($name, $arguments)
+    {
+        return call_user_func_array([$this->getCollection(), $name], $arguments);
+    }
+
 }
diff --git a/library/think/Request.php b/library/think/Request.php
index a405763e..f32637d5 100644
--- a/library/think/Request.php
+++ b/library/think/Request.php
@@ -1502,9 +1502,10 @@ class Request
      * @access public
      * @param string $key 缓存标识，支持变量规则 ，例如 item/:name/:id
      * @param mixed  $expire 缓存有效期
+     * @param array  $except 缓存排除
      * @return void
      */
-    public function cache($key, $expire = null)
+    public function cache($key, $expire = null, $except = [])
     {
         if (false !== $key && $this->isGet() && !$this->isCheckCache) {
             // 标记请求缓存检查
@@ -1516,14 +1517,19 @@ class Request
             if ($key instanceof \Closure) {
                 $key = call_user_func_array($key, [$this]);
             } elseif (true === $key) {
+                foreach ($except as $rule) {
+                    if (0 === strpos($this->url(), $rule)) {
+                        return;
+                    }
+                }
                 // 自动缓存功能
-                $key = '__URL__';
+                $key = md5($this->host()) . '__URL__';
             } elseif (strpos($key, '|')) {
                 list($key, $fun) = explode('|', $key);
             }
             // 特殊规则替换
             if (false !== strpos($key, '__')) {
-                $key = str_replace(['__MODULE__', '__CONTROLLER__', '__ACTION__', '__URL__'], [$this->module, $this->controller, $this->action, md5($this->url())], $key);
+                $key = str_replace(['__MODULE__', '__CONTROLLER__', '__ACTION__', '__URL__', ''], [$this->module, $this->controller, $this->action, md5($this->url())], $key);
             }
 
             if (false !== strpos($key, ':')) {
diff --git a/library/think/Route.php b/library/think/Route.php
index 1629d636..679a1372 100644
--- a/library/think/Route.php
+++ b/library/think/Route.php
@@ -304,8 +304,9 @@ class Route
         }
         $vars = self::parseVar($rule);
         if (isset($name)) {
-            $key = $group ? $group . ($rule ? '/' . $rule : '') : $rule;
-            self::name($name, [$key, $vars, self::$domain]);
+            $key    = $group ? $group . ($rule ? '/' . $rule : '') : $rule;
+            $suffix = isset($option['ext']) ? $option['ext'] : null;
+            self::name($name, [$key, $vars, self::$domain, $suffix]);
         }
         if ($group) {
             if ('*' != $type) {
@@ -447,7 +448,8 @@ class Route
                     $vars   = self::parseVar($key);
                     $item[] = ['rule' => $key, 'route' => $route, 'var' => $vars, 'option' => $options, 'pattern' => $patterns];
                     // 设置路由标识
-                    self::name($route, [$name . ($key ? '/' . $key : ''), $vars, self::$domain]);
+                    $suffix = isset($options['ext']) ? $options['ext'] : null;
+                    self::name($route, [$name . ($key ? '/' . $key : ''), $vars, self::$domain, $suffix]);
                 }
                 self::$rules['*'][$name] = ['rule' => $item, 'route' => '', 'var' => [], 'option' => $option, 'pattern' => $pattern];
             }
@@ -1126,8 +1128,8 @@ class Route
              || (isset($option['ajax']) && !$option['ajax'] && $request->isAjax()) // 非Ajax检测
              || (isset($option['pjax']) && $option['pjax'] && !$request->isPjax()) // Pjax检测
              || (isset($option['pjax']) && !$option['pjax'] && $request->isPjax()) // 非Pjax检测
-             || (isset($option['ext']) && false === stripos('|' . $option['ext'] . '|', $request->ext() ? '|' . $request->ext() . '|' : '')) // 伪静态后缀检测
-             || (isset($option['deny_ext']) && false !== stripos('|' . $option['deny_ext'] . '|', $request->ext() ? '|' . $request->ext() . '|' : ''))
+             || (isset($option['ext']) && false === stripos('|' . $option['ext'] . '|', '|' . $request->ext() . '|')) // 伪静态后缀检测
+             || (isset($option['deny_ext']) && false !== stripos('|' . $option['deny_ext'] . '|', '|' . $request->ext() . '|'))
             || (isset($option['domain']) && !in_array($option['domain'], [$_SERVER['HTTP_HOST'], self::$subDomain])) // 域名检测
              || (isset($option['https']) && $option['https'] && !$request->isSsl()) // https检测
              || (isset($option['https']) && !$option['https'] && $request->isSsl()) // https检测
diff --git a/library/think/Url.php b/library/think/Url.php
index 51c846d7..de3cd912 100644
--- a/library/think/Url.php
+++ b/library/think/Url.php
@@ -80,6 +80,9 @@ class Url
             if (!empty($match[1])) {
                 $domain = $match[1];
             }
+            if (!is_null($match[2])) {
+                $suffix = $match[2];
+            }
         } elseif (!empty($rule) && isset($name)) {
             throw new \InvalidArgumentException('route name not exists:' . $name);
         } else {
@@ -153,7 +156,8 @@ class Url
         // 检测域名
         $domain = self::parseDomain($url, $domain);
         // URL组装
-        $url             = $domain . (self::$root ?: Request::instance()->root()) . '/' . ltrim($url, '/');
+        $url = $domain . rtrim(self::$root ?: Request::instance()->root(), '/') . '/' . ltrim($url, '/');
+
         self::$bindCheck = false;
         return $url;
     }
@@ -287,18 +291,18 @@ class Url
     public static function getRuleUrl($rule, &$vars = [])
     {
         foreach ($rule as $item) {
-            list($url, $pattern, $domain) = $item;
+            list($url, $pattern, $domain, $suffix) = $item;
             if (empty($pattern)) {
-                return [$url, $domain];
+                return [$url, $domain, $suffix];
             }
             foreach ($pattern as $key => $val) {
                 if (isset($vars[$key])) {
                     $url = str_replace(['[:' . $key . ']', '<' . $key . '?>', ':' . $key . '', '<' . $key . '>'], $vars[$key], $url);
                     unset($vars[$key]);
-                    $result = [$url, $domain];
+                    $result = [$url, $domain, $suffix];
                 } elseif (2 == $val) {
                     $url    = str_replace(['/[:' . $key . ']', '[:' . $key . ']', '<' . $key . '?>'], '', $url);
-                    $result = [$url, $domain];
+                    $result = [$url, $domain, $suffix];
                 } else {
                     break;
                 }
diff --git a/library/think/Validate.php b/library/think/Validate.php
index b4443a0c..718ed7a1 100644
--- a/library/think/Validate.php
+++ b/library/think/Validate.php
@@ -568,7 +568,7 @@ class Validate
                 break;
             case 'ip':
                 // 是否为IP地址
-                $result = $this->filter($value, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6);
+                $result = $this->filter($value, [FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6]);
                 break;
             case 'url':
                 // 是否为一个URL地址
@@ -591,7 +591,7 @@ class Validate
                 break;
             case 'boolean':
                 // 是否为布尔值
-                $result = in_array($value, [0, 1, true, false]);
+                $result = in_array($value, [true, false, 0, 1, '0', '1'], true);
                 break;
             case 'array':
                 // 是否为数组
@@ -656,7 +656,7 @@ class Validate
         if (!in_array($rule, ['ipv4', 'ipv6'])) {
             $rule = 'ipv4';
         }
-        return $this->filter($value, FILTER_VALIDATE_IP, 'ipv6' == $rule ? FILTER_FLAG_IPV6 : FILTER_FLAG_IPV4);
+        return $this->filter($value, [FILTER_VALIDATE_IP, 'ipv6' == $rule ? FILTER_FLAG_IPV6 : FILTER_FLAG_IPV4]);
     }
 
     /**
@@ -872,6 +872,7 @@ class Validate
             list($rule, $param) = explode(',', $rule);
         } elseif (is_array($rule)) {
             $param = isset($rule[1]) ? $rule[1] : null;
+            $rule  = $rule[0];
         } else {
             $param = null;
         }
@@ -1222,9 +1223,9 @@ class Validate
             $msg = Lang::get(substr($msg, 2, -1));
         }
 
-        if (is_string($msg) && is_string($rule) && false !== strpos($msg, ':')) {
+        if (is_string($msg) && is_scalar($rule) && false !== strpos($msg, ':')) {
             // 变量替换
-            if (strpos($rule, ',')) {
+            if (is_string($rule) && strpos($rule, ',')) {
                 $array = array_pad(explode(',', $rule), 3, '');
             } else {
                 $array = array_pad([], 3, '');
diff --git a/library/think/cache/driver/File.php b/library/think/cache/driver/File.php
index 4c3c49e0..5aadb2b1 100644
--- a/library/think/cache/driver/File.php
+++ b/library/think/cache/driver/File.php
@@ -225,6 +225,7 @@ class File extends Driver
         foreach ($files as $path) {
             if (is_dir($path)) {
                 array_map('unlink', glob($path . '/*.php'));
+                rmdir($path);
             } else {
                 unlink($path);
             }
diff --git a/library/think/db/Builder.php b/library/think/db/Builder.php
index d98f4334..56665527 100644
--- a/library/think/db/Builder.php
+++ b/library/think/db/Builder.php
@@ -112,8 +112,8 @@ abstract class Builder
                     $result[$item] = $val;
                 } else {
                     $key = str_replace('.', '_', $key);
-                    $this->query->bind($key, $val, isset($bind[$key]) ? $bind[$key] : PDO::PARAM_STR);
-                    $result[$item] = ':' . $key;
+                    $this->query->bind('__data__' . $key, $val, isset($bind[$key]) ? $bind[$key] : PDO::PARAM_STR);
+                    $result[$item] = ':__data__' . $key;
                 }
             } elseif (is_object($val) && method_exists($val, '__toString')) {
                 // 对象数据写入
@@ -250,7 +250,10 @@ abstract class Builder
                     // 使用闭包查询
                     $query = new Query($this->connection);
                     call_user_func_array($value, [ & $query]);
-                    $str[] = ' ' . $key . ' ( ' . $this->buildWhere($query->getOptions('where'), $options) . ' )';
+                    $whereClause = $this->buildWhere($query->getOptions('where'), $options);
+                    if (!empty($whereClause)) {
+                        $str[] = ' ' . $key . ' ( ' . $whereClause . ' )';
+                    }
                 } elseif (strpos($field, '|')) {
                     // 不同字段使用相同查询条件（OR）
                     $array = explode('|', $field);
@@ -523,10 +526,12 @@ abstract class Builder
             $array = [];
             foreach ($order as $key => $val) {
                 if (is_numeric($key)) {
-                    if (false === strpos($val, '(')) {
-                        $array[] = $this->parseKey($val, $options);
-                    } elseif ('[rand]' == $val) {
+                    if ('[rand]' == $val) {
                         $array[] = $this->parseRand();
+                    } elseif (false === strpos($val, '(')) {
+                        $array[] = $this->parseKey($val, $options);
+                    } else {
+                        $array[] = $val;
                     }
                 } else {
                     $sort    = in_array(strtolower(trim($val)), ['asc', 'desc']) ? ' ' . $val : '';
diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index dd56bd5f..bc67b1d8 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -13,7 +13,6 @@ namespace think\db;
 
 use PDO;
 use PDOStatement;
-use think\Collection;
 use think\Db;
 use think\db\exception\BindParamException;
 use think\Debug;
@@ -51,8 +50,6 @@ abstract class Connection
     protected $linkRead;
     protected $linkWrite;
 
-    // 查询结果类型
-    protected $resultSetType = 'array';
     // 查询结果类型
     protected $fetchType = PDO::FETCH_ASSOC;
     // 字段属性大小写
@@ -61,6 +58,8 @@ abstract class Connection
     protected static $event = [];
     // 查询对象
     protected $query = [];
+    // 使用Builder类
+    protected $builder;
     // 数据库连接参数配置
     protected $config = [
         // 数据库类型
@@ -109,6 +108,8 @@ abstract class Connection
         'builder'         => '',
         // Query类
         'query'           => '\\think\\db\\Query',
+        // 是否需要断线重连
+        'break_reconnect' => false,
     ];
 
     // PDO连接参数
@@ -151,6 +152,20 @@ abstract class Connection
         return $this->query[$model];
     }
 
+    /**
+     * 获取当前连接器类对应的Builder类
+     * @access public
+     * @return string
+     */
+    public function getBuilder()
+    {
+        if (!empty($this->builder)) {
+            return $this->builder;
+        } else {
+            return $this->getConfig('builder') ?: '\\think\\db\\builder\\' . ucfirst($this->getConfig('type'));
+        }
+    }
+
     /**
      * 调用Query类的查询方法
      * @access public
@@ -270,10 +285,7 @@ abstract class Connection
             }
             // 记录当前字段属性大小写设置
             $this->attrCase = $params[PDO::ATTR_CASE];
-            // 记录数据集返回类型
-            if (isset($config['resultset_type'])) {
-                $this->resultSetType = $config['resultset_type'];
-            }
+
             // 数据返回类型
             if (isset($config['result_type'])) {
                 $this->fetchType = $config['result_type'];
@@ -353,8 +365,8 @@ abstract class Connection
             $this->bind = $bind;
         }
 
-        //释放前次的查询结果
-        if (!empty($this->PDOStatement) && $this->PDOStatement->queryString != $sql) {
+        // 释放前次的查询结果
+        if (!empty($this->PDOStatement)) {
             $this->free();
         }
 
@@ -381,6 +393,9 @@ abstract class Connection
             // 返回结果集
             return $this->getResult($pdo, $procedure);
         } catch (\PDOException $e) {
+            if ($this->config['break_reconnect'] && $this->isBreak($e)) {
+                return $this->close()->query($sql, $bind, $master, $pdo);
+            }
             throw new PDOException($e, $this->config, $this->getLastsql());
         }
     }
@@ -436,6 +451,9 @@ abstract class Connection
             $this->numRows = $this->PDOStatement->rowCount();
             return $this->numRows;
         } catch (\PDOException $e) {
+            if ($this->config['break_reconnect'] && $this->isBreak($e)) {
+                return $this->close()->execute($sql, $bind);
+            }
             throw new PDOException($e, $this->config, $this->getLastsql());
         }
     }
@@ -511,11 +529,13 @@ abstract class Connection
     protected function bindParam($bind)
     {
         foreach ($bind as $key => $val) {
-            if (is_numeric($key)) {
-                $key = $key + 1;
+            $param = is_numeric($key) ? $key + 1 : ':' . $key;
+            if (is_array($val)) {
+                array_unshift($val, $param);
+                $result = call_user_func_array([$this->PDOStatement, 'bindParam'], $val);
+            } else {
+                $result = $this->PDOStatement->bindValue($param, $val);
             }
-            array_unshift($val, $key);
-            $result = call_user_func_array([$this->PDOStatement, 'bindParam'], $val);
             if (!$result) {
                 $param = array_shift($val);
                 throw new BindParamException(
@@ -529,11 +549,11 @@ abstract class Connection
     }
 
     /**
-     * 获得数据集
+     * 获得数据集数组
      * @access protected
      * @param bool   $pdo 是否返回PDOStatement
      * @param bool   $procedure 是否存储过程
-     * @return mixed
+     * @return array
      */
     protected function getResult($pdo = false, $procedure = false)
     {
@@ -547,11 +567,6 @@ abstract class Connection
         }
         $result        = $this->PDOStatement->fetchAll($this->fetchType);
         $this->numRows = count($result);
-
-        if ('collection' == $this->resultSetType) {
-            // 返回数据集Collection对象
-            $result = new Collection($result);
-        }
         return $result;
     }
 
@@ -740,12 +755,28 @@ abstract class Connection
     }
 
     /**
-     * 关闭数据库
+     * 关闭数据库（或者重新连接）
      * @access public
+     * @return $this
      */
     public function close()
     {
-        $this->linkID = null;
+        $this->linkID    = null;
+        $this->linkWrite = null;
+        $this->linkRead  = null;
+        $this->links     = [];
+        return $this;
+    }
+
+    /**
+     * 是否断线
+     * @access protected
+     * @param \PDOException  $e 异常
+     * @return bool
+     */
+    protected function isBreak($e)
+    {
+        return false;
     }
 
     /**
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index f63d86a7..cd5e9a2c 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -124,8 +124,7 @@ class Query
      */
     protected function setBuilder()
     {
-        $builder       = $this->connection->getConfig('builder') ?: $this->connection->getConfig('type');
-        $class         = false !== strpos($builder, '\\') ? $builder : '\\think\\db\\builder\\' . ucfirst($builder);
+        $class         = $this->connection->getBuilder();
         $this->builder = new $class($this->connection, $this);
     }
 
@@ -229,8 +228,8 @@ class Query
     /**
      * 执行语句
      * @access public
-     * @param string  $sql          sql指令
-     * @param array   $bind         参数绑定
+     * @param string $sql  sql指令
+     * @param array  $bind 参数绑定
      * @return int
      * @throws BindParamException
      * @throws PDOException
@@ -243,7 +242,7 @@ class Query
     /**
      * 获取最近插入的ID
      * @access public
-     * @param string  $sequence     自增序列名
+     * @param string $sequence 自增序列名
      * @return string
      */
     public function getLastInsID($sequence = null)
@@ -390,7 +389,7 @@ class Query
      * @access public
      * @param string $field   字段名
      * @param mixed  $default 默认值
-     * @param bool   $force 强制转为数字类型
+     * @param bool   $force   强制转为数字类型
      * @return mixed
      */
     public function value($field, $default = null, $force = false)
@@ -409,7 +408,7 @@ class Query
             if (isset($this->options['field'])) {
                 unset($this->options['field']);
             }
-            $pdo = $this->field($field)->fetchPdo(true)->find();
+            $pdo = $this->field($field)->limit(1)->getPdo();
             if (is_string($pdo)) {
                 // 返回SQL语句
                 return $pdo;
@@ -420,11 +419,7 @@ class Query
             }
             if (isset($cache)) {
                 // 缓存数据
-                if (isset($cache['tag'])) {
-                    Cache::tag($cache['tag'])->set($key, $result, $cache['expire']);
-                } else {
-                    Cache::set($key, $result, $cache['expire']);
-                }
+                $this->cacheData($key, $result, $cache);
             }
         } else {
             // 清空查询条件
@@ -459,7 +454,7 @@ class Query
             if ($key && '*' != $field) {
                 $field = $key . ',' . $field;
             }
-            $pdo = $this->field($field)->fetchPdo(true)->select();
+            $pdo = $this->field($field)->getPdo();
             if (is_string($pdo)) {
                 // 返回SQL语句
                 return $pdo;
@@ -492,11 +487,7 @@ class Query
             }
             if (isset($cache) && isset($guid)) {
                 // 缓存数据
-                if (isset($cache['tag'])) {
-                    Cache::tag($cache['tag'])->set($guid, $result, $cache['expire']);
-                } else {
-                    Cache::set($guid, $result, $cache['expire']);
-                }
+                $this->cacheData($guid, $result, $cache);
             }
         } else {
             // 清空查询条件
@@ -509,10 +500,17 @@ class Query
      * COUNT查询
      * @access public
      * @param string $field 字段名
-     * @return integer
+     * @return integer|string
      */
     public function count($field = '*')
     {
+        if (isset($this->options['group'])) {
+            // 支持GROUP
+            $options = $this->getOptions();
+            $subSql  = $this->options($options)->field('count(' . $field . ')')->bind($this->bind)->buildSql();
+            return $this->table([$subSql => '_group_count_'])->value('COUNT(*) AS tp_count', 0, true);
+        }
+
         return $this->value('COUNT(' . $field . ') AS tp_count', 0, true);
     }
 
@@ -522,7 +520,7 @@ class Query
      * @param string $field 字段名
      * @return float|int
      */
-    public function sum($field = '*')
+    public function sum($field)
     {
         return $this->value('SUM(' . $field . ') AS tp_sum', 0, true);
     }
@@ -533,7 +531,7 @@ class Query
      * @param string $field 字段名
      * @return mixed
      */
-    public function min($field = '*')
+    public function min($field)
     {
         return $this->value('MIN(' . $field . ') AS tp_min', 0, true);
     }
@@ -544,7 +542,7 @@ class Query
      * @param string $field 字段名
      * @return mixed
      */
-    public function max($field = '*')
+    public function max($field)
     {
         return $this->value('MAX(' . $field . ') AS tp_max', 0, true);
     }
@@ -555,7 +553,7 @@ class Query
      * @param string $field 字段名
      * @return float|int
      */
-    public function avg($field = '*')
+    public function avg($field)
     {
         return $this->value('AVG(' . $field . ') AS tp_avg', 0, true);
     }
@@ -694,7 +692,7 @@ class Query
      * 获取Join表名及别名 支持
      * ['prefix_table或者子查询'=>'alias'] 'prefix_table alias' 'table alias'
      * @access public
-     * @param array|string   $join
+     * @param array|string $join
      * @return array|string
      */
     protected function getJoinTable($join, &$alias = null)
@@ -817,8 +815,8 @@ class Query
     /**
      * 字段值增长
      * @access public
-     * @param string|array  $field    字段名
-     * @param integer       $step     增长值
+     * @param string|array $field 字段名
+     * @param integer      $step  增长值
      * @return $this
      */
     public function inc($field, $step = 1)
@@ -833,8 +831,8 @@ class Query
     /**
      * 字段值减少
      * @access public
-     * @param string|array  $field    字段名
-     * @param integer       $step     增长值
+     * @param string|array $field 字段名
+     * @param integer      $step  增长值
      * @return $this
      */
     public function dec($field, $step = 1)
@@ -849,8 +847,8 @@ class Query
     /**
      * 使用表达式设置数据
      * @access public
-     * @param string  $field    字段名
-     * @param string  $value    字段值
+     * @param string $field 字段名
+     * @param string $value 字段值
      * @return $this
      */
     public function exp($field, $value)
@@ -871,7 +869,7 @@ class Query
     public function view($join, $field = true, $on = null, $type = 'INNER')
     {
         $this->options['view'] = true;
-        if (is_array($join) && is_null($field)) {
+        if (is_array($join) && key($join) !== 0) {
             foreach ($join as $key => $val) {
                 $this->view($key, $val[0], isset($val[1]) ? $val[1] : null, isset($val[2]) ? $val[2] : 'INNER');
             }
@@ -972,6 +970,156 @@ class Query
         return $this;
     }
 
+    /**
+     * 指定Null查询条件
+     * @access public
+     * @param mixed  $field 查询字段
+     * @param string $logic 查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNull($field, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'null', null);
+        return $this;
+    }
+
+    /**
+     * 指定NotNull查询条件
+     * @access public
+     * @param mixed  $field 查询字段
+     * @param string $logic 查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNotNull($field, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'notnull', null);
+        return $this;
+    }
+
+    /**
+     * 指定Exists查询条件
+     * @access public
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereExists($condition, $logic = 'AND')
+    {
+        $this->options['where'][strtoupper($logic)][] = ['exists', $condition];
+        return $this;
+    }
+
+    /**
+     * 指定NotExists查询条件
+     * @access public
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNotExists($condition, $logic = 'AND')
+    {
+        $this->options['where'][strtoupper($logic)][] = ['not exists', $condition];
+        return $this;
+    }
+
+    /**
+     * 指定In查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereIn($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'in', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定NotIn查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNotIn($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'not in', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定Like查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereLike($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'like', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定NotLike查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNotLike($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'not like', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定Between查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereBetween($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'between', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定NotBetween查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereNotBetween($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'not between', $condition);
+        return $this;
+    }
+
+    /**
+     * 指定Exp查询条件
+     * @access public
+     * @param mixed  $field     查询字段
+     * @param mixed  $condition 查询条件
+     * @param string $logic     查询逻辑 and or xor
+     * @return $this
+     */
+    public function whereExp($field, $condition, $logic = 'AND')
+    {
+        $this->parseWhereExp($logic, $field, 'exp', $condition);
+        return $this;
+    }
+
     /**
      * 分析查询表达式
      * @access public
@@ -984,6 +1132,7 @@ class Query
      */
     protected function parseWhereExp($logic, $field, $op, $condition, $param = [])
     {
+        $logic = strtoupper($logic);
         if ($field instanceof \Closure) {
             $this->options['where'][$logic][] = is_string($op) ? [$op, $field] : $field;
             return;
@@ -1003,20 +1152,25 @@ class Query
                 // 数组批量查询
                 $where = $field;
                 foreach ($where as $k => $val) {
-                    $this->options['multi'][$k][] = $val;
+                    $this->options['multi'][$logic][$k][] = $val;
                 }
             } elseif ($field && is_string($field)) {
                 // 字符串查询
-                $where[$field] = ['null', ''];
+                $where[$field]                            = ['null', ''];
+                $this->options['multi'][$logic][$field][] = $where[$field];
             }
         } elseif (is_array($op)) {
             $where[$field] = $param;
         } elseif (in_array(strtolower($op), ['null', 'notnull', 'not null'])) {
             // null查询
-            $where[$field] = [$op, ''];
+            $where[$field]                            = [$op, ''];
+            $this->options['multi'][$logic][$field][] = $where[$field];
         } elseif (is_null($condition)) {
             // 字段相等查询
             $where[$field] = ['eq', $op];
+            if ('AND' != $logic) {
+                $this->options['multi'][$logic][$field][] = $where[$field];
+            }
         } else {
             $where[$field] = [$op, $condition, isset($param[2]) ? $param[2] : null];
             if ('exp' == strtolower($op) && isset($param[2]) && is_array($param[2])) {
@@ -1024,18 +1178,18 @@ class Query
                 $this->bind($param[2]);
             }
             // 记录一个字段多次查询条件
-            $this->options['multi'][$field][] = $where[$field];
+            $this->options['multi'][$logic][$field][] = $where[$field];
         }
         if (!empty($where)) {
             if (!isset($this->options['where'][$logic])) {
                 $this->options['where'][$logic] = [];
             }
-            if (is_string($field) && $this->checkMultiField($field)) {
-                $where[$field] = $this->options['multi'][$field];
+            if (is_string($field) && $this->checkMultiField($field, $logic)) {
+                $where[$field] = $this->options['multi'][$logic][$field];
             } elseif (is_array($field)) {
                 foreach ($field as $key => $val) {
-                    if ($this->checkMultiField($key)) {
-                        $where[$key] = $this->options['multi'][$key];
+                    if ($this->checkMultiField($key, $logic)) {
+                        $where[$key] = $this->options['multi'][$logic][$key];
                     }
                 }
             }
@@ -1043,17 +1197,23 @@ class Query
         }
     }
 
-    // 检查是否存在一个字段多次查询条件
-    private function checkMultiField($field)
+    /**
+     * 检查是否存在一个字段多次查询条件
+     * @access public
+     * @param string $field 查询字段
+     * @param string $logic 查询逻辑 and or xor
+     * @return bool
+     */
+    private function checkMultiField($field, $logic)
     {
-        return isset($this->options['multi'][$field]) && count($this->options['multi'][$field]) > 1;
+        return isset($this->options['multi'][$logic][$field]) && count($this->options['multi'][$logic][$field]) > 1;
     }
 
     /**
      * 去除某个查询条件
      * @access public
-     * @param string $field     查询字段
-     * @param string $logic     查询逻辑 and or xor
+     * @param string $field 查询字段
+     * @param string $logic 查询逻辑 and or xor
      * @return $this
      */
     public function removeWhereField($field, $logic = 'AND')
@@ -1068,7 +1228,7 @@ class Query
     /**
      * 去除查询参数
      * @access public
-     * @param string|bool $option     参数名 true 表示去除所有参数
+     * @param string|bool $option 参数名 true 表示去除所有参数
      * @return $this
      */
     public function removeOption($option = true)
@@ -1115,17 +1275,17 @@ class Query
 
     /**
      * 分页查询
-     * @param int|null $listRows 每页数量
-     * @param int|bool $simple   简洁模式或者总记录数
-     * @param array    $config   配置参数
-     *                           page:当前页,
-     *                           path:url路径,
-     *                           query:url额外参数,
-     *                           fragment:url锚点,
-     *                           var_page:分页变量,
-     *                           list_rows:每页数量
-     *                           type:分页类名
-     * @return \think\paginator\Collection
+     * @param int|array $listRows 每页数量 数组表示配置参数
+     * @param int|bool  $simple   是否简洁模式或者总记录数
+     * @param array     $config   配置参数
+     *                            page:当前页,
+     *                            path:url路径,
+     *                            query:url额外参数,
+     *                            fragment:url锚点,
+     *                            var_page:分页变量,
+     *                            list_rows:每页数量
+     *                            type:分页类名
+     * @return \think\Paginator
      * @throws DbException
      */
     public function paginate($listRows = null, $simple = false, $config = [])
@@ -1134,8 +1294,13 @@ class Query
             $total  = $simple;
             $simple = false;
         }
-        $config   = array_merge(Config::get('paginate'), $config);
-        $listRows = $listRows ?: $config['list_rows'];
+        if (is_array($listRows)) {
+            $config   = array_merge(Config::get('paginate'), $listRows);
+            $listRows = $config['list_rows'];
+        } else {
+            $config   = array_merge(Config::get('paginate'), $config);
+            $listRows = $listRows ?: $config['list_rows'];
+        }
 
         /** @var Paginator $class */
         $class = false !== strpos($config['type'], '\\') ? $config['type'] : '\\think\\paginator\\driver\\' . ucwords($config['type']);
@@ -1150,9 +1315,9 @@ class Query
 
         if (!isset($total) && !$simple) {
             $options = $this->getOptions();
-            if (isset($options['order'])) {
-                unset($this->options['order']);
-            }
+
+            unset($this->options['order'], $this->options['limit'], $this->options['page'], $this->options['field']);
+
             $bind    = $this->bind;
             $total   = $this->count();
             $results = $this->options($options)->bind($bind)->page($page, $listRows)->select();
@@ -1400,7 +1565,7 @@ class Query
      */
     public function fetchPdo($pdo = true)
     {
-        $this->options['fetch_class'] = $pdo;
+        $this->options['fetch_pdo'] = $pdo;
         return $this;
     }
 
@@ -1479,7 +1644,7 @@ class Query
             switch (strtolower($op)) {
                 case 'today':
                 case 'd':
-                    $range = 'today';
+                    $range = ['today', 'tomorrow'];
                     break;
                 case 'week':
                 case 'w':
@@ -1505,6 +1670,8 @@ class Query
                 case 'last year':
                     $range = [mktime(0, 0, 0, 1, 1, $date['year'] - 1), mktime(0, 0, 0, 1, 1, $date['year'])];
                     break;
+                default:
+                    $range = $op;
             }
             $op = is_array($range) ? 'between' : '>';
         }
@@ -1735,15 +1902,19 @@ class Query
             }
         }
         $this->via();
-        $this->options['with'] = $with;
+        if (isset($this->options['with'])) {
+            $this->options['with'] = array_merge($this->options['with'], $with);
+        } else {
+            $this->options['with'] = $with;
+        }
         return $this;
     }
 
     /**
      * 关联统计
      * @access public
-     * @param string|array    $relation 关联方法名
-     * @param bool            $subQuery 是否使用子查询
+     * @param string|array $relation 关联方法名
+     * @param bool         $subQuery 是否使用子查询
      * @return $this
      */
     public function withCount($relation, $subQuery = true)
@@ -1800,12 +1971,22 @@ class Query
     /**
      * 设置关联查询
      * @access public
-     * @param string $relation 关联名称
+     * @param string|array $relation 关联名称
      * @return $this
      */
     public function relation($relation)
     {
-        $this->options['relation'] = $relation;
+        if (empty($relation)) {
+            return $this;
+        }
+        if (is_string($relation)) {
+            $relation = explode(',', $relation);
+        }
+        if (isset($this->options['relation'])) {
+            $this->options['relation'] = array_mrege($this->options['relation'], $relation);
+        } else {
+            $this->options['relation'] = $relation;
+        }
         return $this;
     }
 
@@ -1881,11 +2062,20 @@ class Query
         // 执行操作
         $result = $this->execute($sql, $bind);
         if ($result) {
+            $sequence  = $sequence ?: (isset($options['sequence']) ? $options['sequence'] : null);
+            $lastInsId = $this->getLastInsID($sequence);
+            if ($lastInsId) {
+                $pk = $this->getPk($options);
+                if (is_string($pk)) {
+                    $data[$pk] = $lastInsId;
+                }
+            }
+            $options['data'] = $data;
             $this->trigger('after_insert', $options);
-        }
-        if ($getLastInsID) {
-            $sequence = $sequence ?: (isset($options['sequence']) ? $options['sequence'] : null);
-            return $this->getLastInsID($sequence);
+
+            if ($getLastInsID) {
+                return $lastInsId;
+            }
         }
         return $result;
     }
@@ -1968,8 +2158,8 @@ class Query
         $options = $this->parseExpress();
         $data    = array_merge($options['data'], $data);
         $pk      = $this->getPk($options);
-        if (isset($options['cache']) && is_string($options['cache'])) {
-            $key = $options['cache'];
+        if (isset($options['cache']) && is_string($options['cache']['key'])) {
+            $key = $options['cache']['key'];
         }
 
         if (empty($options['where'])) {
@@ -1998,9 +2188,10 @@ class Query
             } else {
                 $options['where']['AND'] = $where;
             }
-        } elseif (is_string($pk) && isset($options['where']['AND'][$pk]) && is_scalar($options['where']['AND'][$pk])) {
-            $key = 'think:' . $options['table'] . '|' . $options['where']['AND'][$pk];
+        } elseif (!isset($key) && is_string($pk) && isset($options['where']['AND'][$pk])) {
+            $key = $this->getCacheKey($options['where']['AND'][$pk], $options);
         }
+
         // 生成UPDATE SQL语句
         $sql = $this->builder->update($data, $options);
         // 获取参数绑定
@@ -2013,16 +2204,46 @@ class Query
             if (isset($key) && Cache::get($key)) {
                 // 删除缓存
                 Cache::rm($key);
+            } elseif (!empty($options['cache']['tag'])) {
+                Cache::clear($options['cache']['tag']);
             }
             // 执行操作
             $result = '' == $sql ? 0 : $this->execute($sql, $bind);
             if ($result) {
+                if (isset($where[$pk])) {
+                    $data[$pk] = $where[$pk];
+                } elseif (is_string($pk) && isset($key) && strpos($key, '|')) {
+                    list($a, $val) = explode('|', $key);
+                    $data[$pk]     = $val;
+                }
+                $options['data'] = $data;
                 $this->trigger('after_update', $options);
             }
             return $result;
         }
     }
 
+    /**
+     * 执行查询但只返回PDOStatement对象
+     * @access public
+     * @return \PDOStatement|string
+     */
+    public function getPdo()
+    {
+        // 分析查询表达式
+        $options = $this->parseExpress();
+        // 生成查询SQL
+        $sql = $this->builder->select($options);
+        // 获取参数绑定
+        $bind = $this->getBind();
+        if ($options['fetch_sql']) {
+            // 获取实际执行的SQL语句
+            return $this->connection->getRealSql($sql, $bind);
+        }
+        // 执行查询操作
+        return $this->query($sql, $bind, $options['master'], true);
+    }
+
     /**
      * 查找记录
      * @access public
@@ -2068,10 +2289,12 @@ class Query
                 // 获取实际执行的SQL语句
                 return $this->connection->getRealSql($sql, $bind);
             }
+
+            $options['data'] = $data;
             if ($resultSet = $this->trigger('before_select', $options)) {
             } else {
                 // 执行查询操作
-                $resultSet = $this->query($sql, $bind, $options['master'], $options['fetch_class']);
+                $resultSet = $this->query($sql, $bind, $options['master'], $options['fetch_pdo']);
 
                 if ($resultSet instanceof \PDOStatement) {
                     // 返回PDOStatement对象
@@ -2081,40 +2304,42 @@ class Query
 
             if (isset($cache)) {
                 // 缓存数据集
-                if (isset($cache['tag'])) {
-                    Cache::tag($cache['tag'])->set($key, $resultSet, $cache['expire']);
-                } else {
-                    Cache::set($key, $resultSet, $cache['expire']);
-                }
+                $this->cacheData($key, $resultSet, $cache);
             }
         }
 
         // 数据列表读取后的处理
         if (!empty($this->model)) {
             // 生成模型对象
-            $model = $this->model;
+            $modelName = $this->model;
             if (count($resultSet) > 0) {
                 foreach ($resultSet as $key => $result) {
                     /** @var Model $result */
-                    $result = new $model($result);
-                    $result->isUpdate(true);
+                    $model = new $modelName($result);
+                    $model->isUpdate(true);
+
                     // 关联查询
                     if (!empty($options['relation'])) {
-                        $result->relationQuery($options['relation']);
+                        $model->relationQuery($options['relation']);
                     }
                     // 关联统计
                     if (!empty($options['with_count'])) {
-                        $result->relationCount($result, $options['with_count']);
+                        $model->relationCount($model, $options['with_count']);
                     }
-                    $resultSet[$key] = $result;
+                    $resultSet[$key] = $model;
                 }
                 if (!empty($options['with'])) {
                     // 预载入
-                    $result->eagerlyResultSet($resultSet, $options['with'], is_object($resultSet) ? get_class($resultSet) : '');
+                    $model->eagerlyResultSet($resultSet, $options['with']);
                 }
+                // 模型数据集转换
+                $resultSet = $model->toCollection($resultSet);
+            } else {
+                $resultSet = (new $modelName)->toCollection($resultSet);
             }
-            // 模型数据集转换
-            $resultSet = (new $model)->toCollection($resultSet);
+        } elseif ('collection' == $this->connection->getConfig('resultset_type')) {
+            // 返回Collection对象
+            $resultSet = new Collection($resultSet);
         }
         // 返回结果处理
         if (!empty($options['fail']) && count($resultSet) == 0) {
@@ -2123,6 +2348,42 @@ class Query
         return $resultSet;
     }
 
+    /**
+     * 缓存数据
+     * @access public
+     * @param string    $key    缓存标识
+     * @param mixed     $data   缓存数据
+     * @param array     $config 缓存参数
+     */
+    protected function cacheData($key, $data, $config = [])
+    {
+        if (isset($config['tag'])) {
+            Cache::tag($config['tag'])->set($key, $data, $config['expire']);
+        } else {
+            Cache::set($key, $data, $config['expire']);
+        }
+    }
+
+    /**
+     * 生成缓存标识
+     * @access public
+     * @param mixed     $value   缓存数据
+     * @param array     $options 缓存参数
+     */
+    protected function getCacheKey($value, $options)
+    {
+        if (is_scalar($value)) {
+            $data = $value;
+        } elseif (is_array($value) && 'eq' == strtolower($value[0])) {
+            $data = $value[1];
+        }
+        if (isset($data)) {
+            return 'think:' . $options['table'] . '|' . $data;
+        } else {
+            return md5(serialize($options));
+        }
+    }
+
     /**
      * 查找单条记录
      * @access public
@@ -2142,10 +2403,12 @@ class Query
         }
         // 分析查询表达式
         $options = $this->parseExpress();
-
+        $pk      = $this->getPk($options);
         if (!is_null($data)) {
             // AR模式分析主键条件
             $this->parsePkWhere($data, $options);
+        } elseif (!empty($options['cache']) && true === $options['cache']['key'] && is_string($pk) && isset($options['where']['AND'][$pk])) {
+            $key = $this->getCacheKey($options['where']['AND'][$pk], $options);
         }
 
         $options['limit'] = 1;
@@ -2155,12 +2418,14 @@ class Query
             $cache = $options['cache'];
             if (true === $cache['key'] && !is_null($data) && !is_array($data)) {
                 $key = 'think:' . (is_array($options['table']) ? key($options['table']) : $options['table']) . '|' . $data;
-            } else {
-                $key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
+            } elseif (is_string($cache['key'])) {
+                $key = $cache['key'];
+            } elseif (!isset($key)) {
+                $key = md5(serialize($options));
             }
             $result = Cache::get($key);
         }
-        if (!$result) {
+        if (false === $result) {
             // 生成查询SQL
             $sql = $this->builder->select($options);
             // 获取参数绑定
@@ -2169,56 +2434,61 @@ class Query
                 // 获取实际执行的SQL语句
                 return $this->connection->getRealSql($sql, $bind);
             }
-
+            if (is_string($pk)) {
+                if (!is_array($data)) {
+                    if (isset($key) && strpos($key, '|')) {
+                        list($a, $val) = explode('|', $key);
+                        $item[$pk]     = $val;
+                    } else {
+                        $item[$pk] = $data;
+                    }
+                    $data = $item;
+                }
+            }
+            $options['data'] = $data;
             // 事件回调
             if ($result = $this->trigger('before_find', $options)) {
             } else {
                 // 执行查询
-                $result = $this->query($sql, $bind, $options['master'], $options['fetch_class']);
+                $resultSet = $this->query($sql, $bind, $options['master'], $options['fetch_pdo']);
 
-                if ($result instanceof \PDOStatement) {
+                if ($resultSet instanceof \PDOStatement) {
                     // 返回PDOStatement对象
-                    return $result;
+                    return $resultSet;
                 }
+                $result = isset($resultSet[0]) ? $resultSet[0] : null;
             }
 
             if (isset($cache)) {
                 // 缓存数据
-                if (isset($cache['tag'])) {
-                    Cache::tag($cache['tag'])->set($key, $result, $cache['expire']);
-                } else {
-                    Cache::set($key, $result, $cache['expire']);
-                }
+                $this->cacheData($key, $result, $cache);
             }
         }
 
         // 数据处理
-        if (!empty($result[0])) {
-            $data = $result[0];
+        if (!empty($result)) {
             if (!empty($this->model)) {
                 // 返回模型对象
-                $model = $this->model;
-                $data  = new $model($data);
-                $data->isUpdate(true, isset($options['where']['AND']) ? $options['where']['AND'] : null);
+                $model  = $this->model;
+                $result = new $model($result);
+                $result->isUpdate(true, isset($options['where']['AND']) ? $options['where']['AND'] : null);
                 // 关联查询
                 if (!empty($options['relation'])) {
-                    $data->relationQuery($options['relation']);
+                    $result->relationQuery($options['relation']);
                 }
                 // 预载入查询
                 if (!empty($options['with'])) {
-                    $data->eagerlyResult($data, $options['with'], is_object($result) ? get_class($result) : '');
+                    $result->eagerlyResult($result, $options['with']);
                 }
                 // 关联统计
                 if (!empty($options['with_count'])) {
-                    $data->relationCount($data, $options['with_count']);
+                    $result->relationCount($result, $options['with_count']);
                 }
             }
         } elseif (!empty($options['fail'])) {
             $this->throwNotFound($options);
-        } else {
-            $data = null;
         }
-        return $data;
+        return $result;
     }
 
     /**
@@ -2349,8 +2619,9 @@ class Query
     {
         // 分析查询表达式
         $options = $this->parseExpress();
-        if (isset($options['cache']) && is_string($options['cache'])) {
-            $key = $options['cache'];
+        $pk      = $this->getPk($options);
+        if (isset($options['cache']) && is_string($options['cache']['key'])) {
+            $key = $options['cache']['key'];
         }
 
         if (!is_null($data) && true !== $data) {
@@ -2360,6 +2631,8 @@ class Query
             }
             // AR模式分析主键条件
             $this->parsePkWhere($data, $options);
+        } elseif (!isset($key) && is_string($pk) && isset($options['where']['AND'][$pk])) {
+            $key = $this->getCacheKey($options['where']['AND'][$pk], $options);
         }
 
         if (true !== $data && empty($options['where'])) {
@@ -2379,10 +2652,18 @@ class Query
         if (isset($key) && Cache::get($key)) {
             // 删除缓存
             Cache::rm($key);
+        } elseif (!empty($options['cache']['tag'])) {
+            Cache::clear($options['cache']['tag']);
         }
         // 执行操作
         $result = $this->execute($sql, $bind);
         if ($result) {
+            if (!is_array($data) && is_string($pk) && isset($key) && strpos($key, '|')) {
+                list($a, $val) = explode('|', $key);
+                $item[$pk]     = $val;
+                $data          = $item;
+            }
+            $options['data'] = $data;
             $this->trigger('after_delete', $options);
         }
         return $result;
@@ -2454,7 +2735,7 @@ class Query
             $options['strict'] = $this->getConfig('fields_strict');
         }
 
-        foreach (['master', 'lock', 'fetch_class', 'fetch_sql', 'distinct'] as $name) {
+        foreach (['master', 'lock', 'fetch_pdo', 'fetch_sql', 'distinct'] as $name) {
             if (!isset($options[$name])) {
                 $options[$name] = false;
             }
@@ -2482,8 +2763,8 @@ class Query
     /**
      * 注册回调方法
      * @access public
-     * @param string        $event 事件名
-     * @param callable      $callback 回调方法
+     * @param string   $event    事件名
+     * @param callable $callback 回调方法
      * @return void
      */
     public static function event($event, $callback)
@@ -2494,16 +2775,16 @@ class Query
     /**
      * 触发事件
      * @access protected
-     * @param string    $event 事件名
-     * @param mixed     $options 当前查询参数
+     * @param string $event   事件名
+     * @param mixed  $params  额外参数
      * @return bool
      */
-    protected function trigger($event, $options = [])
+    protected function trigger($event, $params = [])
     {
         $result = false;
         if (isset(self::$event[$event])) {
             $callback = self::$event[$event];
-            $result   = call_user_func_array($callback, [$options, $this]);
+            $result   = call_user_func_array($callback, [$params, $this]);
         }
         return $result;
     }
diff --git a/library/think/db/builder/Mysql.php b/library/think/db/builder/Mysql.php
index de38fac5..e432e396 100644
--- a/library/think/db/builder/Mysql.php
+++ b/library/think/db/builder/Mysql.php
@@ -38,6 +38,8 @@ class Mysql extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (!preg_match('/[,\'\"\*\(\)`.\s]/', $key)) {
diff --git a/library/think/db/builder/Pgsql.php b/library/think/db/builder/Pgsql.php
index 8b853a2f..67b98b44 100644
--- a/library/think/db/builder/Pgsql.php
+++ b/library/think/db/builder/Pgsql.php
@@ -57,6 +57,8 @@ class Pgsql extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (isset($table)) {
diff --git a/library/think/db/builder/Sqlite.php b/library/think/db/builder/Sqlite.php
index 02d1bf2e..680b4965 100644
--- a/library/think/db/builder/Sqlite.php
+++ b/library/think/db/builder/Sqlite.php
@@ -62,6 +62,8 @@ class Sqlite extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (isset($table)) {
diff --git a/library/think/db/builder/Sqlsrv.php b/library/think/db/builder/Sqlsrv.php
index d2f418f3..99f68409 100644
--- a/library/think/db/builder/Sqlsrv.php
+++ b/library/think/db/builder/Sqlsrv.php
@@ -75,6 +75,8 @@ class Sqlsrv extends Builder
             list($table, $key) = explode('.', $key, 2);
             if (isset($options['alias'][$table])) {
                 $table = $options['alias'][$table];
+            } elseif ('__TABLE__' == $table) {
+                $table = $this->query->getTable();
             }
         }
         if (!is_numeric($key) && !preg_match('/[,\'\"\*\(\)\[.\s]/', $key)) {
diff --git a/library/think/db/connector/Mysql.php b/library/think/db/connector/Mysql.php
index 31435694..0081fb2e 100644
--- a/library/think/db/connector/Mysql.php
+++ b/library/think/db/connector/Mysql.php
@@ -21,6 +21,8 @@ use think\Log;
 class Mysql extends Connection
 {
 
+    protected $builder = '\\think\\db\\builder\\Mysql';
+
     /**
      * 解析pdo连接的dsn信息
      * @access protected
@@ -127,4 +129,18 @@ class Mysql extends Connection
     {
         return true;
     }
+
+    /**
+     * 是否断线
+     * @access protected
+     * @param \PDOException  $e 异常对象
+     * @return bool
+     */
+    protected function isBreak($e)
+    {
+        if (false !== stripos($e->getMessage(), 'server has gone away')) {
+            return true;
+        }
+        return false;
+    }
 }
diff --git a/library/think/db/connector/Pgsql.php b/library/think/db/connector/Pgsql.php
index 4f8756ca..04c3e782 100644
--- a/library/think/db/connector/Pgsql.php
+++ b/library/think/db/connector/Pgsql.php
@@ -19,6 +19,7 @@ use think\db\Connection;
  */
 class Pgsql extends Connection
 {
+    protected $builder = '\\think\\db\\builder\\Pgsql';
 
     /**
      * 解析pdo连接的dsn信息
diff --git a/library/think/db/connector/Sqlite.php b/library/think/db/connector/Sqlite.php
index 4a08c740..a0e0873c 100644
--- a/library/think/db/connector/Sqlite.php
+++ b/library/think/db/connector/Sqlite.php
@@ -20,6 +20,8 @@ use think\db\Connection;
 class Sqlite extends Connection
 {
 
+    protected $builder = '\\think\\db\\builder\\Sqlite';
+
     /**
      * 解析pdo连接的dsn信息
      * @access protected
diff --git a/library/think/db/connector/Sqlsrv.php b/library/think/db/connector/Sqlsrv.php
index 18148051..20d3491d 100644
--- a/library/think/db/connector/Sqlsrv.php
+++ b/library/think/db/connector/Sqlsrv.php
@@ -25,7 +25,7 @@ class Sqlsrv extends Connection
         PDO::ATTR_ERRMODE           => PDO::ERRMODE_EXCEPTION,
         PDO::ATTR_STRINGIFY_FETCHES => false,
     ];
-
+    protected $builder = '\\think\\db\\builder\\Sqlsrv';
     /**
      * 解析pdo连接的dsn信息
      * @access protected
diff --git a/library/think/model/Collection.php b/library/think/model/Collection.php
new file mode 100644
index 00000000..08e11ad8
--- /dev/null
+++ b/library/think/model/Collection.php
@@ -0,0 +1,79 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: zhangyajun <448901948@qq.com>
+// +----------------------------------------------------------------------
+
+namespace think\model;
+
+use think\Collection as BaseCollection;
+use think\Model;
+
+class Collection extends BaseCollection
+{
+    /**
+     * 延迟预载入关联查询
+     * @access public
+     * @param mixed $relation 关联
+     * @return $this
+     */
+    public function load($relation)
+    {
+        $item = current($this->items);
+        $item->eagerlyResultSet($this->items, $relation);
+        return $this;
+    }
+
+    /**
+     * 设置需要隐藏的输出属性
+     * @access public
+     * @param array $hidden   属性列表
+     * @param bool  $override 是否覆盖
+     * @return $this
+     */
+    public function hidden($hidden = [], $override = false)
+    {
+        $this->each(function ($model) use ($hidden, $override) {
+            /** @var Model $model */
+            $model->hidden($hidden, $override);
+        });
+        return $this;
+    }
+
+    /**
+     * 设置需要输出的属性
+     * @param array $visible
+     * @param bool  $override 是否覆盖
+     * @return $this
+     */
+    public function visible($visible = [], $override = false)
+    {
+        $this->each(function ($model) use ($visible, $override) {
+            /** @var Model $model */
+            $model->visible($visible, $override);
+        });
+        return $this;
+    }
+
+    /**
+     * 设置需要追加的输出属性
+     * @access public
+     * @param array $append   属性列表
+     * @param bool  $override 是否覆盖
+     * @return $this
+     */
+    public function append($append = [], $override = false)
+    {
+        $this->each(function ($model) use ($append, $override) {
+            /** @var Model $model */
+            $model->append($append, $override);
+        });
+        return $this;
+    }
+
+}
diff --git a/library/think/model/Merge.php b/library/think/model/Merge.php
index e1070d1d..01f403f8 100644
--- a/library/think/model/Merge.php
+++ b/library/think/model/Merge.php
@@ -11,7 +11,6 @@
 
 namespace think\model;
 
-use think\Db;
 use think\db\Query;
 use think\Model;
 
@@ -40,9 +39,9 @@ class Merge extends Model
     /**
      * 查找单条记录
      * @access public
-     * @param mixed     $data 主键值或者查询条件（闭包）
-     * @param string    $with 关联预查询
-     * @param bool      $cache 是否缓存
+     * @param mixed        $data  主键值或者查询条件（闭包）
+     * @param string|array $with  关联预查询
+     * @param bool         $cache 是否缓存
      * @return \think\Model
      */
     public static function get($data = null, $with = [], $cache = false)
@@ -78,11 +77,11 @@ class Merge extends Model
     /**
      * 获取关联模型的字段 并解决混淆
      * @access protected
-     * @param \think\db\Query   $query 查询对象
-     * @param string            $name 模型名称
-     * @param string            $table 关联表名称
-     * @param array             $map 字段映射
-     * @param array             $fields 查询字段
+     * @param \think\db\Query $query  查询对象
+     * @param string          $name   模型名称
+     * @param string          $table  关联表名称
+     * @param array           $map    字段映射
+     * @param array           $fields 查询字段
      * @return array
      */
     protected static function getModelField($query, $name, $table = '', $map = [], $fields = [])
@@ -104,8 +103,9 @@ class Merge extends Model
     /**
      * 查找所有记录
      * @access public
-     * @param mixed     $data 主键列表或者查询条件（闭包）
-     * @param string    $with 关联预查询
+     * @param mixed        $data 主键列表或者查询条件（闭包）
+     * @param array|string $with 关联预查询
+     * @param bool         $cache
      * @return array|false|string
      */
     public static function all($data = null, $with = [], $cache = false)
@@ -118,10 +118,10 @@ class Merge extends Model
     /**
      * 处理写入的模型数据
      * @access public
-     * @param string    $model 模型名称
-     * @param array     $data 数据
-     * @param bool      $insert 是否新增
-     * @return void
+     * @param string $model  模型名称
+     * @param array  $data   数据
+     * @param bool   $insert 是否新增
+     * @return array
      */
     protected function parseData($model, $data, $insert = false)
     {
@@ -144,10 +144,11 @@ class Merge extends Model
     /**
      * 保存模型数据 以及关联数据
      * @access public
-     * @param mixed     $data 数据
-     * @param array     $where 更新条件
-     * @param string    $sequence     自增序列名
-     * @return integer|false
+     * @param mixed  $data     数据
+     * @param array  $where    更新条件
+     * @param string $sequence 自增序列名
+     * @return false|int
+     * @throws \Exception
      */
     public function save($data = [], $where = [], $sequence = null)
     {
@@ -158,7 +159,7 @@ class Merge extends Model
             }
             // 数据对象赋值
             foreach ($data as $key => $value) {
-                $this->setAttr($key, $value);
+                $this->setAttr($key, $value, $data);
             }
             if (!empty($where)) {
                 $this->isUpdate = true;
@@ -278,7 +279,8 @@ class Merge extends Model
     /**
      * 删除当前的记录 并删除关联数据
      * @access public
-     * @return integer
+     * @return int
+     * @throws \Exception
      */
     public function delete()
     {
diff --git a/library/think/model/Relation.php b/library/think/model/Relation.php
index e940a78d..3d56091b 100644
--- a/library/think/model/Relation.php
+++ b/library/think/model/Relation.php
@@ -15,24 +15,24 @@ use think\db\Query;
 use think\Exception;
 use think\Model;
 
+/**
+ * Class Relation
+ * @package think\model
+ *
+ * @mixin Query
+ */
 abstract class Relation
 {
     // 父模型对象
     protected $parent;
     /** @var  Model 当前关联的模型类 */
     protected $model;
+    /** @var Query 关联模型查询对象 */
+    protected $query;
     // 关联表外键
     protected $foreignKey;
     // 关联表主键
     protected $localKey;
-    // 数据表别名
-    protected $alias;
-    // 当前关联的JOIN类型
-    protected $joinType;
-    // 关联模型查询对象
-    protected $query;
-    // 关联查询条件
-    protected $where;
     // 关联查询参数
     protected $option;
     // 基础查询
@@ -71,25 +71,12 @@ abstract class Relation
     /**
      * 封装关联数据集
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $class 数据集类名
+     * @param array $resultSet 数据集
      * @return mixed
      */
-    protected function resultSetBuild($resultSet, $class = '')
+    protected function resultSetBuild($resultSet)
     {
-        return $class ? new $class($resultSet) : $resultSet;
-    }
-
-    /**
-     * 设置当前关联定义的数据表别名
-     * @access public
-     * @param array  $alias 别名定义
-     * @return $this
-     */
-    public function setAlias($alias)
-    {
-        $this->alias = $alias;
-        return $this;
+        return (new $this->model)->toCollection($resultSet);
     }
 
     /**
@@ -103,6 +90,13 @@ abstract class Relation
         return $this;
     }
 
+    /**
+     * 执行基础查询（进执行一次）
+     * @access protected
+     * @return void
+     */
+    abstract protected function baseQuery();
+
     public function __call($method, $args)
     {
         if ($this->query) {
diff --git a/library/think/model/relation/BelongsTo.php b/library/think/model/relation/BelongsTo.php
index 373f6cbf..6996526d 100644
--- a/library/think/model/relation/BelongsTo.php
+++ b/library/think/model/relation/BelongsTo.php
@@ -11,6 +11,7 @@
 
 namespace think\model\relation;
 
+use think\Loader;
 use think\Model;
 
 class BelongsTo extends OneToOne
@@ -22,29 +23,71 @@ class BelongsTo extends OneToOne
      * @param string $model 模型名
      * @param string $foreignKey 关联外键
      * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
      * @param string $joinType JOIN类型
      */
-    public function __construct(Model $parent, $model, $foreignKey, $localKey, $alias = [], $joinType = 'INNER')
+    public function __construct(Model $parent, $model, $foreignKey, $localKey, $joinType = 'INNER')
     {
         $this->parent     = $parent;
         $this->model      = $model;
         $this->foreignKey = $foreignKey;
         $this->localKey   = $localKey;
-        $this->alias      = $alias;
         $this->joinType   = $joinType;
         $this->query      = (new $model)->db();
     }
 
     /**
      * 延迟获取关联数据
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
      * @access public
+     * @return array|false|\PDOStatement|string|Model
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
         $foreignKey = $this->foreignKey;
-        $localKey   = $this->localKey;
-        return $this->query->where($localKey, $this->parent->$foreignKey)->find();
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
+        return $this->query->where($this->localKey, $this->parent->$foreignKey)->relation($subRelation)->find();
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*')
+    {
+        return $this->parent;
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        $table    = $this->query->getTable();
+        $model    = basename(str_replace('\\', '/', get_class($this->parent)));
+        $relation = basename(str_replace('\\', '/', $this->model));
+        if (is_array($where)) {
+            foreach ($where as $key => $val) {
+                if (false === strpos($key, '.')) {
+                    $where[$relation . '.' . $key] = $val;
+                    unset($where[$key]);
+                }
+            }
+        }
+        return $this->parent->db()->alias($model)
+            ->field($model . '.*')
+            ->join($table . ' ' . $relation, $model . '.' . $this->foreignKey . '=' . $relation . '.' . $this->localKey, $this->joinType)
+            ->where($where);
     }
 
     /**
@@ -54,10 +97,9 @@ class BelongsTo extends OneToOne
      * @param string    $relation 当前关联名
      * @param string    $subRelation 子关联名
      * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
      * @return void
      */
-    protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure, $class)
+    protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure)
     {
         $localKey   = $this->localKey;
         $foreignKey = $this->foreignKey;
@@ -71,26 +113,29 @@ class BelongsTo extends OneToOne
         }
 
         if (!empty($range)) {
-            $this->where[$localKey] = ['in', $range];
-            $data                   = $this->eagerlyWhere($this, [
+            $data = $this->eagerlyWhere($this, [
                 $localKey => [
                     'in',
                     $range,
                 ],
             ], $localKey, $relation, $subRelation, $closure);
-
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             // 关联数据封装
             foreach ($resultSet as $result) {
+                // 关联模型
                 if (!isset($data[$result->$foreignKey])) {
-                    $data[$result->$foreignKey] = [];
+                    $relationModel = null;
+                } else {
+                    $relationModel = $data[$result->$foreignKey];
                 }
-                $relationModel = $this->resultSetBuild($data[$result->$foreignKey], $class);
-                if (!empty($this->bindAttr)) {
+
+                if ($relationModel && !empty($this->bindAttr)) {
                     // 绑定关联属性
                     $this->bindAttr($relationModel, $result, $this->bindAttr);
                 }
                 // 设置关联属性
-                $result->setAttr($relation, $relationModel);
+                $result->setAttr($attr, $relationModel);
             }
         }
     }
@@ -102,25 +147,25 @@ class BelongsTo extends OneToOne
      * @param string    $relation 当前关联名
      * @param string    $subRelation 子关联名
      * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
      * @return void
      */
-    protected function eagerlyOne(&$result, $relation, $subRelation, $closure, $class)
+    protected function eagerlyOne(&$result, $relation, $subRelation, $closure)
     {
         $localKey   = $this->localKey;
         $foreignKey = $this->foreignKey;
         $data       = $this->eagerlyWhere($this, [$localKey => $result->$foreignKey], $localKey, $relation, $subRelation, $closure);
-        // 关联数据封装
+        // 关联模型
         if (!isset($data[$result->$foreignKey])) {
-            $data[$result->$foreignKey] = [];
+            $relationModel = null;
+        } else {
+            $relationModel = $data[$result->$foreignKey];
         }
-        $relationModel = $this->resultSetBuild($data[$result->$foreignKey], $class);
-        if (!empty($this->bindAttr)) {
+        if ($relationModel && !empty($this->bindAttr)) {
             // 绑定关联属性
             $this->bindAttr($relationModel, $result, $this->bindAttr);
         }
         // 设置关联属性
-        $result->setAttr($relation, $relationModel);
+        $result->setAttr(Loader::parseName($relation), $relationModel);
     }
 
 }
diff --git a/library/think/model/relation/BelongsToMany.php b/library/think/model/relation/BelongsToMany.php
index 88079f56..b7758e9f 100644
--- a/library/think/model/relation/BelongsToMany.php
+++ b/library/think/model/relation/BelongsToMany.php
@@ -11,9 +11,9 @@
 
 namespace think\model\relation;
 
-use think\Db;
 use think\db\Query;
 use think\Exception;
+use think\Loader;
 use think\Model;
 use think\model\Pivot;
 use think\model\Relation;
@@ -26,37 +26,40 @@ class BelongsToMany extends Relation
     /**
      * 构造函数
      * @access public
-     * @param Model  $parent 上级模型对象
-     * @param string $model 模型名
-     * @param string $table 中间表名
+     * @param Model  $parent     上级模型对象
+     * @param string $model      模型名
+     * @param string $table      中间表名
      * @param string $foreignKey 关联模型外键
-     * @param string $localKey 当前模型关联键
-     * @param array  $alias 别名定义
+     * @param string $localKey   当前模型关联键
      */
-    public function __construct(Model $parent, $model, $table, $foreignKey, $localKey, $alias = [])
+    public function __construct(Model $parent, $model, $table, $foreignKey, $localKey)
     {
         $this->parent     = $parent;
         $this->model      = $model;
         $this->foreignKey = $foreignKey;
         $this->localKey   = $localKey;
         $this->middle     = $table;
-        $this->alias      = $alias;
         $this->query      = (new $model)->db();
     }
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return false|\PDOStatement|string|\think\Collection
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
         $foreignKey = $this->foreignKey;
         $localKey   = $this->localKey;
         $middle     = $this->middle;
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
         // 关联查询
         $pk                              = $this->parent->getPk();
         $condition['pivot.' . $localKey] = $this->parent->$pk;
-        $result                          = $this->belongsToManyQuery($middle, $foreignKey, $localKey, $condition)->select();
+        $result                          = $this->belongsToManyQuery($middle, $foreignKey, $localKey, $condition)->relation($subRelation)->select();
         foreach ($result as $set) {
             $pivot = [];
             foreach ($set->getData() as $key => $val) {
@@ -73,17 +76,41 @@ class BelongsToMany extends Relation
         return $result;
     }
 
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
+    {
+        return $this->parent;
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        throw new Exception('relation not support: hasWhere');
+    }
+
     /**
      * 预载入关联查询（数据集）
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
     {
         $localKey   = $this->localKey;
         $foreignKey = $this->foreignKey;
@@ -105,14 +132,15 @@ class BelongsToMany extends Relation
                     $range,
                 ],
             ], $relation, $subRelation);
-
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             // 关联数据封装
             foreach ($resultSet as $result) {
                 if (!isset($data[$result->$pk])) {
                     $data[$result->$pk] = [];
                 }
 
-                $result->setAttr($relation, $this->resultSetBuild($data[$result->$pk], $class));
+                $result->setAttr($attr, $this->resultSetBuild($data[$result->$pk]));
             }
         }
     }
@@ -120,14 +148,13 @@ class BelongsToMany extends Relation
     /**
      * 预载入关联查询（单个数据）
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
     {
         $pk = $result->getPk();
         if (isset($result->$pk)) {
@@ -139,15 +166,15 @@ class BelongsToMany extends Relation
             if (!isset($data[$pk])) {
                 $data[$pk] = [];
             }
-            $result->setAttr($relation, $this->resultSetBuild($data[$pk], $class));
+            $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$pk]));
         }
     }
 
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
@@ -164,20 +191,25 @@ class BelongsToMany extends Relation
     /**
      * 获取关联统计子查询
      * @access public
-     * @param \Closure  $closure 闭包
+     * @param \Closure $closure 闭包
      * @return string
      */
     public function getRelationCountQuery($closure)
     {
-        return $this->belongsToManyQuery($this->middle, $this->foreignKey, $this->localKey, ['pivot.' . $this->localKey => ['exp', '=' . $this->parent->getTable() . '.' . $this->parent->getPk()]])->fetchSql()->count();
+        return $this->belongsToManyQuery($this->middle, $this->foreignKey, $this->localKey, [
+            'pivot.' . $this->localKey => [
+                'exp',
+                '=' . $this->parent->getTable() . '.' . $this->parent->getPk(),
+            ],
+        ])->fetchSql()->count();
     }
 
     /**
      * 多对多 关联模型预查询
      * @access public
-     * @param array     $where 关联预查询条件
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
+     * @param array  $where       关联预查询条件
+     * @param string $relation    关联名
+     * @param string $subRelation 子关联
      * @return array
      */
     protected function eagerlyManyToMany($where, $relation, $subRelation = '')
@@ -207,10 +239,10 @@ class BelongsToMany extends Relation
     /**
      * BELONGS TO MANY 关联查询
      * @access public
-     * @param string    $table 中间表名
-     * @param string    $foreignKey 关联模型关联键
-     * @param string    $localKey 当前模型关联键
-     * @param array     $condition 关联查询条件
+     * @param string $table      中间表名
+     * @param string $foreignKey 关联模型关联键
+     * @param string $localKey   当前模型关联键
+     * @param array  $condition  关联查询条件
      * @return Query
      */
     protected function belongsToManyQuery($table, $foreignKey, $localKey, $condition = [])
@@ -227,8 +259,8 @@ class BelongsToMany extends Relation
     /**
      * 保存（新增）当前关联数据对象
      * @access public
-     * @param mixed     $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
-     * @param array     $pivot 中间表额外数据
+     * @param mixed $data  数据 可以使用数组 关联模型对象 和 关联对象的主键
+     * @param array $pivot 中间表额外数据
      * @return integer
      */
     public function save($data, array $pivot = [])
@@ -240,9 +272,9 @@ class BelongsToMany extends Relation
     /**
      * 批量保存当前关联数据对象
      * @access public
-     * @param array     $dataSet 数据集
-     * @param array     $pivot 中间表额外数据
-     * @param bool      $samePivot 额外数据是否相同
+     * @param array $dataSet   数据集
+     * @param array $pivot     中间表额外数据
+     * @param bool  $samePivot 额外数据是否相同
      * @return integer
      */
     public function saveAll(array $dataSet, array $pivot = [], $samePivot = false)
@@ -262,9 +294,10 @@ class BelongsToMany extends Relation
     /**
      * 附加关联的一个中间表数据
      * @access public
-     * @param mixed     $data 数据 可以使用数组、关联模型对象 或者 关联对象的主键
-     * @param array     $pivot 中间表额外数据
-     * @return integer
+     * @param mixed $data  数据 可以使用数组、关联模型对象 或者 关联对象的主键
+     * @param array $pivot 中间表额外数据
+     * @return array|Pivot
+     * @throws Exception
      */
     public function attach($data, $pivot = [])
     {
@@ -293,7 +326,12 @@ class BelongsToMany extends Relation
             $ids                    = (array) $id;
             foreach ($ids as $id) {
                 $pivot[$this->foreignKey] = $id;
-                $result                   = $this->query->table($this->middle)->insert($pivot, true);
+                $this->query->table($this->middle)->insert($pivot, true);
+                $result[] = new Pivot($pivot, $this->middle);
+            }
+            if (count($result) == 1) {
+                // 返回中间表模型对象
+                $result = $result[0];
             }
             return $result;
         } else {
@@ -304,8 +342,8 @@ class BelongsToMany extends Relation
     /**
      * 解除关联的一个中间表数据
      * @access public
-     * @param integer|array     $data 数据 可以使用关联对象的主键
-     * @param bool              $relationDel 是否同时删除关联表数据
+     * @param integer|array $data        数据 可以使用关联对象的主键
+     * @param bool          $relationDel 是否同时删除关联表数据
      * @return integer
      */
     public function detach($data = null, $relationDel = false)
diff --git a/library/think/model/relation/HasMany.php b/library/think/model/relation/HasMany.php
index be130287..364d793d 100644
--- a/library/think/model/relation/HasMany.php
+++ b/library/think/model/relation/HasMany.php
@@ -13,6 +13,7 @@ namespace think\model\relation;
 
 use think\Db;
 use think\db\Query;
+use think\Loader;
 use think\Model;
 use think\model\Relation;
 
@@ -21,42 +22,44 @@ class HasMany extends Relation
     /**
      * 构造函数
      * @access public
-     * @param Model  $parent 上级模型对象
-     * @param string $model 模型名
+     * @param Model  $parent     上级模型对象
+     * @param string $model      模型名
      * @param string $foreignKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
+     * @param string $localKey   关联主键
      */
-    public function __construct(Model $parent, $model, $foreignKey, $localKey, $alias = [])
+    public function __construct(Model $parent, $model, $foreignKey, $localKey)
     {
         $this->parent     = $parent;
         $this->model      = $model;
         $this->foreignKey = $foreignKey;
         $this->localKey   = $localKey;
-        $this->alias      = $alias;
         $this->query      = (new $model)->db();
     }
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return false|\PDOStatement|string|\think\Collection
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
-        return $this->select();
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
+        return $this->relation($subRelation)->select();
     }
 
     /**
      * 预载入关联查询
-     * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @access   public
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
     {
         $localKey = $this->localKey;
         $range    = [];
@@ -68,35 +71,34 @@ class HasMany extends Relation
         }
 
         if (!empty($range)) {
-            $this->where[$this->foreignKey] = ['in', $range];
-            $data                           = $this->eagerlyOneToMany($this, [
+            $data = $this->eagerlyOneToMany($this, [
                 $this->foreignKey => [
                     'in',
                     $range,
                 ],
             ], $relation, $subRelation, $closure);
-
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             // 关联数据封装
             foreach ($resultSet as $result) {
                 if (!isset($data[$result->$localKey])) {
                     $data[$result->$localKey] = [];
                 }
-                $result->setAttr($relation, $this->resultSetBuild($data[$result->$localKey], $class));
+                $result->setAttr($attr, $this->resultSetBuild($data[$result->$localKey]));
             }
         }
     }
 
     /**
      * 预载入关联查询
-     * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @access   public
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
     {
         $localKey = $this->localKey;
 
@@ -106,15 +108,15 @@ class HasMany extends Relation
             if (!isset($data[$result->$localKey])) {
                 $data[$result->$localKey] = [];
             }
-            $result->setAttr($relation, $this->resultSetBuild($data[$result->$localKey], $class));
+            $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$localKey]));
         }
     }
 
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
@@ -133,7 +135,7 @@ class HasMany extends Relation
     /**
      * 创建关联统计子查询
      * @access public
-     * @param \Closure  $closure 闭包
+     * @param \Closure $closure 闭包
      * @return string
      */
     public function getRelationCountQuery($closure)
@@ -142,17 +144,22 @@ class HasMany extends Relation
             call_user_func_array($closure, [ & $this->query]);
         }
 
-        return $this->query->where([$this->foreignKey => ['exp', '=' . $this->parent->getTable() . '.' . $this->parent->getPk()]])->fetchSql()->count();
+        return $this->query->where([
+            $this->foreignKey => [
+                'exp',
+                '=' . $this->parent->getTable() . '.' . $this->parent->getPk(),
+            ],
+        ])->fetchSql()->count();
     }
 
     /**
      * 一对多 关联模型预查询
      * @access public
-     * @param object    $model 关联模型对象
-     * @param array     $where 关联预查询条件
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
-     * @param bool      $closure
+     * @param object $model       关联模型对象
+     * @param array  $where       关联预查询条件
+     * @param string $relation    关联名
+     * @param string $subRelation 子关联
+     * @param bool   $closure
      * @return array
      */
     protected function eagerlyOneToMany($model, $where, $relation, $subRelation = '', $closure = false)
@@ -175,7 +182,7 @@ class HasMany extends Relation
     /**
      * 保存（新增）当前关联数据对象
      * @access public
-     * @param mixed     $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
+     * @param mixed $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
      * @return integer
      */
     public function save($data)
@@ -192,7 +199,7 @@ class HasMany extends Relation
     /**
      * 批量保存当前关联数据对象
      * @access public
-     * @param array     $dataSet 数据集
+     * @param array $dataSet 数据集
      * @return integer
      */
     public function saveAll(array $dataSet)
@@ -207,17 +214,17 @@ class HasMany extends Relation
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param Model     $model 模型对象
-     * @param string    $operator 比较操作符
-     * @param integer   $count 个数
-     * @param string    $id 关联表的统计字段
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
      * @return Query
      */
-    public function has($model, $operator = '>=', $count = 1, $id = '*')
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
     {
         $table = $this->query->getTable();
-        return $model->db()->alias('a')
-            ->join($table . ' b', 'a.' . $this->localKey . '=b.' . $this->foreignKey, $this->joinType)
+        return $this->parent->db()->alias('a')
+            ->join($table . ' b', 'a.' . $this->localKey . '=b.' . $this->foreignKey, $joinType)
             ->group('b.' . $this->foreignKey)
             ->having('count(' . $id . ')' . $operator . $count);
     }
@@ -225,24 +232,25 @@ class HasMany extends Relation
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param Model    $model 模型对象
-     * @param mixed     $where 查询条件（数组或者闭包）
+     * @param mixed $where 查询条件（数组或者闭包）
      * @return Query
      */
-    public function hasWhere($model, $where = [])
+    public function hasWhere($where = [])
     {
-        $table = $this->query->getTable();
+        $table    = $this->query->getTable();
+        $model    = basename(str_replace('\\', '/', get_class($this->parent)));
+        $relation = basename(str_replace('\\', '/', $this->model));
         if (is_array($where)) {
             foreach ($where as $key => $val) {
                 if (false === strpos($key, '.')) {
-                    $where['b.' . $key] = $val;
+                    $where[$relation . '.' . $key] = $val;
                     unset($where[$key]);
                 }
             }
         }
-        return $model->db()->alias('a')
-            ->field('a.*')
-            ->join($table . ' b', 'a.' . $this->localKey . '=b.' . $this->foreignKey, $this->joinType)
+        return $this->parent->db()->alias($model)
+            ->field($model . '.*')
+            ->join($table . ' ' . $relation, $model . '.' . $this->localKey . '=' . $relation . '.' . $this->foreignKey)
             ->where($where);
     }
 
@@ -254,9 +262,7 @@ class HasMany extends Relation
     protected function baseQuery()
     {
         if (empty($this->baseQuery)) {
-            if (isset($this->where)) {
-                $this->query->where($this->where);
-            } elseif (isset($this->parent->{$this->localKey})) {
+            if (isset($this->parent->{$this->localKey})) {
                 // 关联查询带入关联条件
                 $this->query->where($this->foreignKey, $this->parent->{$this->localKey});
             }
diff --git a/library/think/model/relation/HasManyThrough.php b/library/think/model/relation/HasManyThrough.php
index 6c4bdefd..dd6f6a55 100644
--- a/library/think/model/relation/HasManyThrough.php
+++ b/library/think/model/relation/HasManyThrough.php
@@ -13,6 +13,7 @@ namespace think\model\relation;
 
 use think\Db;
 use think\db\Query;
+use think\Exception;
 use think\Loader;
 use think\Model;
 use think\model\Relation;
@@ -26,16 +27,15 @@ class HasManyThrough extends Relation
 
     /**
      * 构造函数
-     * @access public
-     * @param Model  $parent 上级模型对象
-     * @param string $model 模型名
-     * @param string $through 中间模型名
-     * @param string $firstkey 关联外键
-     * @param string $secondKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
+     * @access   public
+     * @param Model  $parent     上级模型对象
+     * @param string $model      模型名
+     * @param string $through    中间模型名
+     * @param string $foreignKey 关联外键
+     * @param string $throughKey 关联外键
+     * @param string $localKey   关联主键
      */
-    public function __construct(Model $parent, $model, $through, $foreignKey, $throughKey, $localKey, $alias = [])
+    public function __construct(Model $parent, $model, $through, $foreignKey, $throughKey, $localKey)
     {
         $this->parent     = $parent;
         $this->model      = $model;
@@ -43,54 +43,86 @@ class HasManyThrough extends Relation
         $this->foreignKey = $foreignKey;
         $this->throughKey = $throughKey;
         $this->localKey   = $localKey;
-        $this->alias      = $alias;
         $this->query      = (new $model)->db();
     }
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return false|\PDOStatement|string|\think\Collection
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
-        return $this->select();
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
+        return $this->relation($subRelation)->select();
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
+    {
+        return $this->parent;
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        throw new Exception('relation not support: hasWhere');
     }
 
     /**
      * 预载入关联查询
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
+     * @param string   $class       数据集对象名 为空表示数组
      * @return void
      */
     public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
-    {}
+    {
+    }
 
     /**
      * 预载入关联查询 返回模型对象
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
+     * @param string   $class       数据集对象名 为空表示数组
      * @return void
      */
     public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
-    {}
+    {
+    }
 
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
-    {}
+    {
+    }
 
     /**
      * 执行基础查询（进执行一次）
diff --git a/library/think/model/relation/HasOne.php b/library/think/model/relation/HasOne.php
index 49b5bfab..95a401bf 100644
--- a/library/think/model/relation/HasOne.php
+++ b/library/think/model/relation/HasOne.php
@@ -11,6 +11,8 @@
 
 namespace think\model\relation;
 
+use think\db\Query;
+use think\Loader;
 use think\Model;
 
 class HasOne extends OneToOne
@@ -18,72 +20,90 @@ class HasOne extends OneToOne
     /**
      * 构造函数
      * @access public
-     * @param Model $parent 上级模型对象
-     * @param string $model 模型名
+     * @param Model  $parent     上级模型对象
+     * @param string $model      模型名
      * @param string $foreignKey 关联外键
-     * @param string $localKey 关联主键
-     * @param array  $alias 别名定义
-     * @param string $joinType JOIN类型
+     * @param string $localKey   关联主键
+     * @param string $joinType   JOIN类型
      */
-    public function __construct(Model $parent, $model, $foreignKey, $localKey, $alias = [], $joinType = 'INNER')
+    public function __construct(Model $parent, $model, $foreignKey, $localKey, $joinType = 'INNER')
     {
         $this->parent     = $parent;
         $this->model      = $model;
         $this->foreignKey = $foreignKey;
         $this->localKey   = $localKey;
-        $this->alias      = $alias;
         $this->joinType   = $joinType;
         $this->query      = (new $model)->db();
     }
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return array|false|\PDOStatement|string|Model
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
         // 执行关联定义方法
         $localKey = $this->localKey;
-
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
         // 判断关联类型执行查询
-        return $this->query->where($this->foreignKey, $this->parent->$localKey)->find();
+        return $this->query->where($this->foreignKey, $this->parent->$localKey)->relation($subRelation)->find();
     }
 
     /**
      * 根据关联条件查询当前模型
      * @access public
-     * @param Model    $model 模型对象
-     * @param mixed    $where 查询条件（数组或者闭包）
      * @return Query
      */
-    public function hasWhere($model, $where = [])
+    public function has()
     {
-        $table = $this->query->getTable();
+        $table      = $this->query->getTable();
+        $localKey   = $this->localKey;
+        $foreignKey = $this->foreignKey;
+        return $this->parent->db()->alias('a')
+            ->whereExists(function ($query) use ($table, $localKey, $foreignKey) {
+                $query->table([$table => 'b'])->field('b.' . $foreignKey)->whereExp('a.' . $localKey, '=b.' . $foreignKey);
+            });
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        $table    = $this->query->getTable();
+        $model    = basename(str_replace('\\', '/', get_class($this->parent)));
+        $relation = basename(str_replace('\\', '/', $this->model));
         if (is_array($where)) {
             foreach ($where as $key => $val) {
                 if (false === strpos($key, '.')) {
-                    $where['b.' . $key] = $val;
+                    $where[$relation . '.' . $key] = $val;
                     unset($where[$key]);
                 }
             }
         }
-        return $model->db()->alias('a')
-            ->field('a.*')
-            ->join($table . ' b', 'a.' . $this->localKey . '=b.' . $this->foreignKey, $this->joinType)
+        return $this->parent->db()->alias($model)
+            ->field($model . '.*')
+            ->join($table . ' ' . $relation, $model . '.' . $this->localKey . '=' . $relation . '.' . $this->foreignKey, $this->joinType)
             ->where($where);
     }
 
     /**
      * 预载入关联查询（数据集）
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure, $class)
+    protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure)
     {
         $localKey   = $this->localKey;
         $foreignKey = $this->foreignKey;
@@ -97,26 +117,28 @@ class HasOne extends OneToOne
         }
 
         if (!empty($range)) {
-            $this->where[$foreignKey] = ['in', $range];
-            $data                     = $this->eagerlyWhere($this, [
+            $data = $this->eagerlyWhere($this, [
                 $foreignKey => [
                     'in',
                     $range,
                 ],
             ], $foreignKey, $relation, $subRelation, $closure);
-
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             // 关联数据封装
             foreach ($resultSet as $result) {
+                // 关联模型
                 if (!isset($data[$result->$localKey])) {
-                    $data[$result->$localKey] = [];
+                    $relationModel = null;
+                } else {
+                    $relationModel = $data[$result->$localKey];
                 }
-                $relationModel = $this->resultSetBuild($data[$result->$localKey], $class);
-                if (!empty($this->bindAttr)) {
+                if ($relationModel && !empty($this->bindAttr)) {
                     // 绑定关联属性
                     $this->bindAttr($relationModel, $result, $this->bindAttr);
                 }
                 // 设置关联属性
-                $result->setAttr($relation, $relationModel);
+                $result->setAttr($attr, $relationModel);
             }
         }
     }
@@ -124,28 +146,30 @@ class HasOne extends OneToOne
     /**
      * 预载入关联查询（数据）
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    protected function eagerlyOne(&$result, $relation, $subRelation, $closure, $class)
+    protected function eagerlyOne(&$result, $relation, $subRelation, $closure)
     {
         $localKey   = $this->localKey;
         $foreignKey = $this->foreignKey;
         $data       = $this->eagerlyWhere($this, [$foreignKey => $result->$localKey], $foreignKey, $relation, $subRelation, $closure);
-        // 关联数据封装
+
+        // 关联模型
         if (!isset($data[$result->$localKey])) {
-            $data[$result->$localKey] = [];
+            $relationModel = null;
+        } else {
+            $relationModel = $data[$result->$localKey];
         }
-        $relationModel = $this->resultSetBuild($data[$result->$localKey], $class);
-        if (!empty($this->bindAttr)) {
+
+        if ($relationModel && !empty($this->bindAttr)) {
             // 绑定关联属性
             $this->bindAttr($relationModel, $result, $this->bindAttr);
         }
-        $result->setAttr($relation, $relationModel);
+        $result->setAttr(Loader::parseName($relation), $relationModel);
     }
 
 }
diff --git a/library/think/model/relation/MorphMany.php b/library/think/model/relation/MorphMany.php
index 79aaf02e..58e44135 100644
--- a/library/think/model/relation/MorphMany.php
+++ b/library/think/model/relation/MorphMany.php
@@ -13,6 +13,8 @@ namespace think\model\relation;
 
 use think\Db;
 use think\db\Query;
+use think\Exception;
+use think\Loader;
 use think\Model;
 use think\model\Relation;
 
@@ -27,11 +29,11 @@ class MorphMany extends Relation
     /**
      * 构造函数
      * @access public
-     * @param Model  $parent 上级模型对象
-     * @param string $model 模型名
-     * @param string $morphKey 关联外键
+     * @param Model  $parent    上级模型对象
+     * @param string $model     模型名
+     * @param string $morphKey  关联外键
      * @param string $morphType 多态字段名
-     * @param string $type 多态类型
+     * @param string $type      多态类型
      */
     public function __construct(Model $parent, $model, $morphKey, $morphType, $type)
     {
@@ -45,24 +47,53 @@ class MorphMany extends Relation
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return false|\PDOStatement|string|\think\Collection
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
-        return $this->select();
+        if ($closure) {
+            call_user_func_array($closure, [ & $this->query]);
+        }
+        return $this->relation($subRelation)->select();
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
+    {
+        throw new Exception('relation not support: has');
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        throw new Exception('relation not support: hasWhere');
     }
 
     /**
      * 预载入关联查询
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
     {
         $morphType = $this->morphType;
         $morphKey  = $this->morphKey;
@@ -77,19 +108,18 @@ class MorphMany extends Relation
         }
 
         if (!empty($range)) {
-            $this->where[$morphKey]  = ['in', $range];
-            $this->where[$morphType] = $type;
-            $data                    = $this->eagerlyMorphToMany([
+            $data = $this->eagerlyMorphToMany([
                 $morphKey  => ['in', $range],
                 $morphType => $type,
             ], $relation, $subRelation, $closure);
-
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             // 关联数据封装
             foreach ($resultSet as $result) {
                 if (!isset($data[$result->$pk])) {
                     $data[$result->$pk] = [];
                 }
-                $result->setAttr($relation, $this->resultSetBuild($data[$result->$pk], $class));
+                $result->setAttr($attr, $this->resultSetBuild($data[$result->$pk]));
             }
         }
     }
@@ -97,27 +127,29 @@ class MorphMany extends Relation
     /**
      * 预载入关联查询
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
     {
         $pk = $result->getPk();
         if (isset($result->$pk)) {
-            $data = $this->eagerlyMorphToMany([$this->morphKey => $result->$pk, $this->morphType => $this->type], $relation, $subRelation, $closure);
-            $result->setAttr($relation, $this->resultSetBuild($data[$result->$pk], $class));
+            $data = $this->eagerlyMorphToMany([
+                $this->morphKey  => $result->$pk,
+                $this->morphType => $this->type,
+            ], $relation, $subRelation, $closure);
+            $result->setAttr(Loader::parseName($relation), $this->resultSetBuild($data[$result->$pk]));
         }
     }
 
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
@@ -136,7 +168,7 @@ class MorphMany extends Relation
     /**
      * 获取关联统计子查询
      * @access public
-     * @param \Closure  $closure 闭包
+     * @param \Closure $closure 闭包
      * @return string
      */
     public function getRelationCountQuery($closure)
@@ -145,16 +177,22 @@ class MorphMany extends Relation
             call_user_func_array($closure, [ & $this->query]);
         }
 
-        return $this->query->where([$this->morphKey => ['exp', '=' . $this->parent->getTable() . '.' . $this->parent->getPk()], $this->morphType => $this->type])->fetchSql()->count();
+        return $this->query->where([
+            $this->morphKey  => [
+                'exp',
+                '=' . $this->parent->getTable() . '.' . $this->parent->getPk(),
+            ],
+            $this->morphType => $this->type,
+        ])->fetchSql()->count();
     }
 
     /**
      * 多态一对多 关联模型预查询
-     * @access public
-     * @param object    $model 关联模型对象
-     * @param array     $where 关联预查询条件
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
+     * @access   public
+     * @param array         $where       关联预查询条件
+     * @param string        $relation    关联名
+     * @param string        $subRelation 子关联
+     * @param bool|\Closure $closure     闭包
      * @return array
      */
     protected function eagerlyMorphToMany($where, $relation, $subRelation = '', $closure = false)
@@ -176,7 +214,7 @@ class MorphMany extends Relation
     /**
      * 保存（新增）当前关联数据对象
      * @access public
-     * @param mixed     $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
+     * @param mixed $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
      * @return integer
      */
     public function save($data)
@@ -196,7 +234,7 @@ class MorphMany extends Relation
     /**
      * 批量保存当前关联数据对象
      * @access public
-     * @param array     $dataSet 数据集
+     * @param array $dataSet 数据集
      * @return integer
      */
     public function saveAll(array $dataSet)
diff --git a/library/think/model/relation/MorphTo.php b/library/think/model/relation/MorphTo.php
index 55e03ac3..6c31a752 100644
--- a/library/think/model/relation/MorphTo.php
+++ b/library/think/model/relation/MorphTo.php
@@ -11,6 +11,7 @@
 
 namespace think\model\relation;
 
+use think\Exception;
 use think\Loader;
 use think\Model;
 use think\model\Relation;
@@ -20,14 +21,16 @@ class MorphTo extends Relation
     // 多态字段
     protected $morphKey;
     protected $morphType;
+    // 多态别名
+    protected $alias;
 
     /**
      * 构造函数
      * @access public
-     * @param Model  $parent 上级模型对象
+     * @param Model  $parent    上级模型对象
      * @param string $morphType 多态字段名
-     * @param string $morphKey 外键名
-     * @param array  $alias 多态别名定义
+     * @param string $morphKey  外键名
+     * @param array  $alias     多态别名定义
      */
     public function __construct(Model $parent, $morphType, $morphKey, $alias = [])
     {
@@ -39,9 +42,11 @@ class MorphTo extends Relation
 
     /**
      * 延迟获取关联数据
-     * @access public
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包查询条件
+     * @return mixed
      */
-    public function getRelation()
+    public function getRelation($subRelation = '', $closure = null)
     {
         $morphKey  = $this->morphKey;
         $morphType = $this->morphType;
@@ -49,7 +54,32 @@ class MorphTo extends Relation
         $model = $this->parseModel($this->parent->$morphType);
         // 主键数据
         $pk = $this->parent->$morphKey;
-        return (new $model)->find($pk);
+        return (new $model)->relation($subRelation)->find($pk);
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param string  $operator 比较操作符
+     * @param integer $count    个数
+     * @param string  $id       关联表的统计字段
+     * @param string  $joinType JOIN类型
+     * @return Query
+     */
+    public function has($operator = '>=', $count = 1, $id = '*', $joinType = 'INNER')
+    {
+        return $this->parent;
+    }
+
+    /**
+     * 根据关联条件查询当前模型
+     * @access public
+     * @param mixed $where 查询条件（数组或者闭包）
+     * @return Query
+     */
+    public function hasWhere($where = [])
+    {
+        throw new Exception('relation not support: hasWhere');
     }
 
     /**
@@ -72,17 +102,29 @@ class MorphTo extends Relation
         return $model;
     }
 
+    /**
+     * 设置多态别名
+     * @access public
+     * @param array $alias 别名定义
+     * @return $this
+     */
+    public function setAlias($alias)
+    {
+        $this->alias = $alias;
+        return $this;
+    }
+
     /**
      * 预载入关联查询
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
+     * @throws Exception
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
     {
         $morphKey  = $this->morphKey;
         $morphType = $this->morphType;
@@ -95,6 +137,8 @@ class MorphTo extends Relation
         }
 
         if (!empty($range)) {
+            // 关联属性名
+            $attr = Loader::parseName($relation);
             foreach ($range as $key => $val) {
                 // 多态类型映射
                 $model = $this->parseModel($key);
@@ -107,10 +151,12 @@ class MorphTo extends Relation
                 }
                 foreach ($resultSet as $result) {
                     if ($key == $result->$morphType) {
+                        // 关联模型
                         if (!isset($data[$result->$morphKey])) {
-                            $data[$result->$morphKey] = [];
+                            throw new Exception('relation data not exists :' . $this->model);
+                        } else {
+                            $result->setAttr($attr, $data[$result->$morphKey]);
                         }
-                        $result->setAttr($relation, $this->resultSetBuild($data[$result->$morphKey], $class));
                     }
                 }
             }
@@ -120,14 +166,13 @@ class MorphTo extends Relation
     /**
      * 预载入关联查询
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
     {
         $morphKey  = $this->morphKey;
         $morphType = $this->morphType;
@@ -139,20 +184,21 @@ class MorphTo extends Relation
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
-    {}
+    {
+    }
 
     /**
      * 多态MorphTo 关联模型预查询
-     * @access public
-     * @param object    $model 关联模型对象
-     * @param array     $where 关联预查询条件
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
+     * @access   public
+     * @param object $model       关联模型对象
+     * @param string $relation    关联名
+     * @param        $result
+     * @param string $subRelation 子关联
      * @return void
      */
     protected function eagerlyMorphToOne($model, $relation, &$result, $subRelation = '')
@@ -163,7 +209,7 @@ class MorphTo extends Relation
         if ($data) {
             $data->isUpdate(true);
         }
-        $result->setAttr($relation, $data ?: null);
+        $result->setAttr(Loader::parseName($relation), $data ?: null);
     }
 
     /**
diff --git a/library/think/model/relation/OneToOne.php b/library/think/model/relation/OneToOne.php
index ef21bee0..18b92225 100644
--- a/library/think/model/relation/OneToOne.php
+++ b/library/think/model/relation/OneToOne.php
@@ -17,27 +17,46 @@ use think\Loader;
 use think\Model;
 use think\model\Relation;
 
+/**
+ * Class OneToOne
+ * @package think\model\relation
+ *
+ */
 abstract class OneToOne extends Relation
 {
-    // 预载入方式
-    protected $eagerlyType = 0;
+    // 预载入方式 0 -JOIN 1 -IN
+    protected $eagerlyType = 1;
+    // 当前关联的JOIN类型
+    protected $joinType;
     // 要绑定的属性
     protected $bindAttr = [];
 
+    /**
+     * 设置join类型
+     * @access public
+     * @param string $type JOIN类型
+     * @return $this
+     */
+    public function joinType($type)
+    {
+        $this->joinType = $type;
+        return $this;
+    }
+
     /**
      * 预载入关联查询（JOIN方式）
      * @access public
-     * @param Query     $query 查询对象
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
-     * @param \Closure  $closure 闭包条件
-     * @param bool      $first
+     * @param Query    $query       查询对象
+     * @param string   $relation    关联名
+     * @param string   $subRelation 子关联
+     * @param \Closure $closure     闭包条件
+     * @param bool     $first
      * @return void
      */
     public function eagerly(Query $query, $relation, $subRelation, $closure, $first)
     {
         $name  = Loader::parseName(basename(str_replace('\\', '/', $query->getModel())));
-        $alias = isset($this->alias[$name]) ? $this->alias[$name] : $name;
+        $alias = $name;
         if ($first) {
             $table = $query->getTable();
             $query->table([$table => $alias]);
@@ -52,8 +71,7 @@ abstract class OneToOne extends Relation
 
         // 预载入封装
         $joinTable = $this->query->getTable();
-        $joinName  = Loader::parseName(basename(str_replace('\\', '/', $this->model)));
-        $joinAlias = isset($this->alias[$joinName]) ? $this->alias[$joinName] : $relation;
+        $joinAlias = $relation;
         $query->via($joinAlias);
 
         if ($this instanceof BelongsTo) {
@@ -64,9 +82,8 @@ abstract class OneToOne extends Relation
 
         if ($closure) {
             // 执行闭包查询
-            call_user_func_array($closure, [ & $query]);
-            //指定获取关联的字段
-            //需要在 回调中 调方法 withField 方法，如
+            call_user_func_array($closure, [& $query]);
+            // 使用withField指定获取关联的字段，如
             // $query->where(['id'=>1])->withField('id,name');
             if ($query->getOptions('with_field')) {
                 $field = $query->getOptions('with_field');
@@ -80,21 +97,40 @@ abstract class OneToOne extends Relation
         $query->field($field, false, $joinTable, $joinAlias, $relation . '__');
     }
 
+    /**
+     *  预载入关联查询（数据集）
+     * @param array    $resultSet
+     * @param string   $relation
+     * @param string   $subRelation
+     * @param \Closure $closure
+     * @return mixed
+     */
+    abstract protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure);
+
+    /**
+     * 预载入关联查询（数据）
+     * @param Model    $result
+     * @param string   $relation
+     * @param string   $subRelation
+     * @param \Closure $closure
+     * @return mixed
+     */
+    abstract protected function eagerlyOne(&$result, $relation, $subRelation, $closure);
+
     /**
      * 预载入关联查询（数据集）
      * @access public
-     * @param array     $resultSet 数据集
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param array    $resultSet   数据集
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure, $class)
+    public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
     {
         if (1 == $this->eagerlyType) {
             // IN查询
-            $this->eagerlySet($resultSet, $relation, $subRelation, $closure, $class);
+            $this->eagerlySet($resultSet, $relation, $subRelation, $closure);
         } else {
             // 模型关联组装
             foreach ($resultSet as $result) {
@@ -106,18 +142,17 @@ abstract class OneToOne extends Relation
     /**
      * 预载入关联查询（数据）
      * @access public
-     * @param Model     $result 数据对象
-     * @param string    $relation 当前关联名
-     * @param string    $subRelation 子关联名
-     * @param \Closure  $closure 闭包
-     * @param string    $class 数据集对象名 为空表示数组
+     * @param Model    $result      数据对象
+     * @param string   $relation    当前关联名
+     * @param string   $subRelation 子关联名
+     * @param \Closure $closure     闭包
      * @return void
      */
-    public function eagerlyResult(&$result, $relation, $subRelation, $closure, $class)
+    public function eagerlyResult(&$result, $relation, $subRelation, $closure)
     {
         if (1 == $this->eagerlyType) {
             // IN查询
-            $this->eagerlyOne($result, $relation, $subRelation, $closure, $class);
+            $this->eagerlyOne($result, $relation, $subRelation, $closure);
         } else {
             // 模型关联组装
             $this->match($this->model, $relation, $result);
@@ -127,7 +162,7 @@ abstract class OneToOne extends Relation
     /**
      * 保存（新增）当前关联数据对象
      * @access public
-     * @param mixed     $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
+     * @param mixed $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
      * @return integer
      */
     public function save($data)
@@ -144,8 +179,8 @@ abstract class OneToOne extends Relation
     /**
      * 设置预载入方式
      * @access public
-     * @param integer     $type 预载入方式 0 JOIN查询 1 IN查询
-     * @return this
+     * @param integer $type 预载入方式 0 JOIN查询 1 IN查询
+     * @return $this
      */
     public function setEagerlyType($type)
     {
@@ -167,8 +202,8 @@ abstract class OneToOne extends Relation
     /**
      * 绑定关联表的属性到父模型属性
      * @access public
-     * @param mixed    $attr 要绑定的属性列表
-     * @return this
+     * @param mixed $attr 要绑定的属性列表
+     * @return $this
      */
     public function bind($attr)
     {
@@ -182,19 +217,20 @@ abstract class OneToOne extends Relation
     /**
      * 关联统计
      * @access public
-     * @param Model     $result 数据对象
-     * @param \Closure  $closure 闭包
+     * @param Model    $result  数据对象
+     * @param \Closure $closure 闭包
      * @return integer
      */
     public function relationCount($result, $closure)
-    {}
+    {
+    }
 
     /**
      * 一对一 关联模型预查询拼装
      * @access public
-     * @param string    $model 模型名称
-     * @param string    $relation 关联名
-     * @param Model     $result 模型对象实例
+     * @param string $model    模型名称
+     * @param string $relation 关联名
+     * @param Model  $result   模型对象实例
      * @return void
      */
     protected function match($model, $relation, &$result)
@@ -215,16 +251,17 @@ abstract class OneToOne extends Relation
                 $this->bindAttr($relationModel, $result, $this->bindAttr);
             }
         }
-        $result->setAttr($relation, !isset($relationModel) ? null : $relationModel->isUpdate(true));
+        $result->setAttr(Loader::parseName($relation), !isset($relationModel) ? null : $relationModel->isUpdate(true));
     }
 
     /**
      * 绑定关联属性到父模型
      * @access protected
-     * @param Model    $model 关联模型对象
-     * @param Model    $result 父模型对象
-     * @param array    $bindAttr 绑定属性
+     * @param Model $model    关联模型对象
+     * @param Model $result   父模型对象
+     * @param array $bindAttr 绑定属性
      * @return void
+     * @throws Exception
      */
     protected function bindAttr($model, &$result, $bindAttr)
     {
@@ -241,26 +278,29 @@ abstract class OneToOne extends Relation
     /**
      * 一对一 关联模型预查询（IN方式）
      * @access public
-     * @param object    $model 关联模型对象
-     * @param array     $where 关联预查询条件
-     * @param string    $key 关联键名
-     * @param string    $relation 关联名
-     * @param string    $subRelation 子关联
-     * @param bool      $closure
+     * @param object        $model       关联模型对象
+     * @param array         $where       关联预查询条件
+     * @param string        $key         关联键名
+     * @param string        $relation    关联名
+     * @param string        $subRelation 子关联
+     * @param bool|\Closure $closure
      * @return array
      */
     protected function eagerlyWhere($model, $where, $key, $relation, $subRelation = '', $closure = false)
     {
         // 预载入关联查询 支持嵌套预载入
         if ($closure) {
-            call_user_func_array($closure, [ & $model]);
+            call_user_func_array($closure, [& $model]);
+            if ($field = $model->getOptions('with_field')) {
+                $model->field($field)->removeOption('with_field');
+            }
         }
         $list = $model->where($where)->with($subRelation)->select();
 
         // 组装模型数据
         $data = [];
         foreach ($list as $set) {
-            $data[$set->$key][] = $set;
+            $data[$set->$key] = $set;
         }
         return $data;
     }
diff --git a/library/think/paginator/Collection.php b/library/think/paginator/Collection.php
deleted file mode 100644
index 0c877388..00000000
--- a/library/think/paginator/Collection.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-// +----------------------------------------------------------------------
-// | ThinkPHP [ WE CAN DO IT JUST THINK ]
-// +----------------------------------------------------------------------
-// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
-// +----------------------------------------------------------------------
-// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
-// +----------------------------------------------------------------------
-// | Author: zhangyajun <448901948@qq.com>
-// +----------------------------------------------------------------------
-
-namespace think\paginator;
-
-use Exception;
-use think\Paginator;
-
-/**
- * Class Collection
- * @package think\paginator
- * @method integer total()
- * @method integer listRows()
- * @method integer currentPage()
- * @method string render()
- * @method Paginator fragment($fragment)
- * @method Paginator appends($key, $value)
- * @method integer lastPage()
- * @method boolean hasPages()
- */
-class Collection extends \think\Collection
-{
-
-    /** @var Paginator */
-    protected $paginator;
-
-    public function __construct($items = [], Paginator $paginator = null)
-    {
-        $this->paginator = $paginator;
-        parent::__construct($items);
-    }
-
-    public static function make($items = [], Paginator $paginator = null)
-    {
-        return new static($items, $paginator);
-    }
-    
-    public function toArray()
-    {
-        if ($this->paginator) {
-            try {
-                $total = $this->total();
-            } catch (Exception $e) {
-                $total = null;
-            }
-
-            return [
-                'total'        => $total,
-                'per_page'     => $this->listRows(),
-                'current_page' => $this->currentPage(),
-                'data'         => parent::toArray()
-            ];
-        } else {
-            return parent::toArray();
-        }
-    }
-
-    public function __call($method, $args)
-    {
-        if ($this->paginator && method_exists($this->paginator, $method)) {
-            return call_user_func_array([$this->paginator, $method], $args);
-        } else {
-            throw new Exception('method not exists:' . __CLASS__ . '->' . $method);
-        }
-    }
-}
diff --git a/library/think/template/taglib/Cx.php b/library/think/template/taglib/Cx.php
index 1a23c764..af7a54c8 100644
--- a/library/think/template/taglib/Cx.php
+++ b/library/think/template/taglib/Cx.php
@@ -98,7 +98,7 @@ class Cx extends Taglib
             $name = $this->autoBuildVar($name);
         }
 
-        $parseStr .= 'if(is_array(' . $name . ') || ' . $name . ' instanceof \think\Collection): $' . $key . ' = 0;';
+        $parseStr .= 'if(is_array(' . $name . ') || ' . $name . ' instanceof \think\Collection || ' . $name . ' instanceof \think\Paginator): $' . $key . ' = 0;';
         // 设置了输出数组长度
         if (0 != $offset || 'null' != $length) {
             $parseStr .= '$__LIST__ = is_array(' . $name . ') ? array_slice(' . $name . ',' . $offset . ',' . $length . ', true) : ' . $name . '->slice(' . $offset . ',' . $length . ', true); ';
@@ -158,7 +158,7 @@ class Cx extends Taglib
         } else {
             $name = $this->autoBuildVar($name);
         }
-        $parseStr .= 'if(is_array(' . $name . ') || ' . $name . ' instanceof \think\Collection): ';
+        $parseStr .= 'if(is_array(' . $name . ') || ' . $name . ' instanceof \think\Collection || ' . $name . ' instanceof \think\Paginator): ';
         // 设置了输出数组长度
         if (0 != $offset || 'null' != $length) {
             if (!isset($var)) {
@@ -431,7 +431,7 @@ class Cx extends Taglib
     {
         $name     = $tag['name'];
         $name     = $this->autoBuildVar($name);
-        $parseStr = '<?php if(empty(' . $name . ') || (' . $name . ' instanceof \think\Collection && ' . $name . '->isEmpty())): ?>' . $content . '<?php endif; ?>';
+        $parseStr = '<?php if(empty(' . $name . ') || ((' . $name . ' instanceof \think\Collection || ' . $name . ' instanceof \think\Paginator ) && ' . $name . '->isEmpty())): ?>' . $content . '<?php endif; ?>';
         return $parseStr;
     }
 
@@ -448,7 +448,7 @@ class Cx extends Taglib
     {
         $name     = $tag['name'];
         $name     = $this->autoBuildVar($name);
-        $parseStr = '<?php if(!(empty(' . $name . ') || (' . $name . ' instanceof \think\Collection && ' . $name . '->isEmpty()))): ?>' . $content . '<?php endif; ?>';
+        $parseStr = '<?php if(!(empty(' . $name . ') || ((' . $name . ' instanceof \think\Collection || ' . $name . ' instanceof \think\Paginator ) && ' . $name . '->isEmpty()))): ?>' . $content . '<?php endif; ?>';
         return $parseStr;
     }
 
diff --git a/library/traits/controller/Jump.php b/library/traits/controller/Jump.php
index 51f4281f..6e6f2dec 100644
--- a/library/traits/controller/Jump.php
+++ b/library/traits/controller/Jump.php
@@ -131,16 +131,17 @@ trait Jump
      * @param string         $url 跳转的URL表达式
      * @param array|integer  $params 其它URL参数
      * @param integer        $code http code
+     * @param array          $with 隐式传参
      * @return void
      */
-    protected function redirect($url, $params = [], $code = 302)
+    protected function redirect($url, $params = [], $code = 302, $with = [])
     {
         $response = new Redirect($url);
         if (is_integer($params)) {
             $code   = $params;
             $params = [];
         }
-        $response->code($code)->params($params);
+        $response->code($code)->params($params)->with($with);
         throw new HttpResponseException($response);
     }
 
diff --git a/library/traits/model/SoftDelete.php b/library/traits/model/SoftDelete.php
index 1a69c2c5..2b97ff72 100644
--- a/library/traits/model/SoftDelete.php
+++ b/library/traits/model/SoftDelete.php
@@ -42,7 +42,7 @@ trait SoftDelete
     {
         $model = new static();
         $field = $model->getDeleteTimeField(true);
-        return $model->db(false)->where($field, 'exp', 'is not null');
+        return $model->db(false)->whereNotNull($field);
     }
 
     /**
@@ -63,7 +63,7 @@ trait SoftDelete
             $this->data[$name] = $this->autoWriteTimestamp($name);
             $result            = $this->isUpdate()->save();
         } else {
-            $result = $this->db()->delete($this->data);
+            $result = $this->db(false)->delete($this->data);
         }
 
         $this->trigger('after_delete', $this);
@@ -129,7 +129,7 @@ trait SoftDelete
     protected function base($query)
     {
         $field = $this->getDeleteTimeField(true);
-        $query->where($field, 'null');
+        $query->whereNull($field);
     }
 
     /**
@@ -142,7 +142,7 @@ trait SoftDelete
     {
         $field = isset($this->deleteTime) ? $this->deleteTime : 'delete_time';
         if (!strpos($field, '.')) {
-            $field = $this->db(false)->getTable() . '.' . $field;
+            $field = '__TABLE__.' . $field;
         }
         if (!$read && strpos($field, '.')) {
             $array = explode('.', $field);
diff --git a/tests/thinkphp/library/think/dbTest.php b/tests/thinkphp/library/think/dbTest.php
index 4d3d16d5..515f9424 100644
--- a/tests/thinkphp/library/think/dbTest.php
+++ b/tests/thinkphp/library/think/dbTest.php
@@ -140,7 +140,7 @@ EOF;
     public function testExecute()
     {
         $config = $this->getConfig();
-        $sql = $this->getCreateTableSql();
+        $sql    = $this->getCreateTableSql();
         foreach ($sql as $one) {
             Db::connect($config)->execute($one);
         }
@@ -151,7 +151,7 @@ EOF;
     public function testQuery()
     {
         $config = $this->getConfig();
-        $sql = $this->getCreateTableSql();
+        $sql    = $this->getCreateTableSql();
         Db::connect($config)->batchQuery($sql);
 
         $tableQueryResult = Db::connect($config)->query("show tables;");
@@ -165,7 +165,7 @@ EOF;
     public function testBatchQuery()
     {
         $config = $this->getConfig();
-        $sql = $this->getCreateTableSql();
+        $sql    = $this->getCreateTableSql();
         Db::connect($config)->batchQuery($sql);
 
         $tableNum = Db::connect($config)->execute("show tables;");
@@ -174,28 +174,28 @@ EOF;
 
     public function testTable()
     {
-        $config = $this->getConfig();
+        $config    = $this->getConfig();
         $tableName = 'tp_user';
-        $result = Db::connect($config)->table($tableName);
+        $result    = Db::connect($config)->table($tableName);
         $this->assertEquals($tableName, $result->getOptions()['table']);
     }
 
     public function testName()
     {
-        $config = $this->getConfig();
+        $config    = $this->getConfig();
         $tableName = 'user';
-        $result = Db::connect($config)->name($tableName);
+        $result    = Db::connect($config)->name($tableName);
         $this->assertEquals($config['prefix'] . $tableName, $result->getOptions()['table']);
     }
 
     public function testInsert()
     {
         $config = $this->getConfig();
-        $data = [
+        $data   = [
             'username'    => 'chunice',
             'password'    => md5('chunice'),
             'status'      => 1,
-            'create_time' => time()
+            'create_time' => time(),
         ];
         $result = Db::connect($config)->name('user')->insert($data);
         $this->assertEquals(1, $result);
@@ -204,11 +204,11 @@ EOF;
     public function testUpdate()
     {
         $config = $this->getConfig();
-        $data = [
+        $data   = [
             'username'    => 'chunice_update',
             'password'    => md5('chunice'),
             'status'      => 1,
-            'create_time' => time()
+            'create_time' => time(),
         ];
         $result = Db::connect($config)->name('user')->where('username', 'chunice')->update($data);
         $this->assertEquals(1, $result);
@@ -216,7 +216,7 @@ EOF;
 
     public function testFind()
     {
-        $config = $this->getConfig();
+        $config   = $this->getConfig();
         $mustFind = Db::connect($config)->name('user')->where('username', 'chunice_update')->find();
         $this->assertNotEmpty($mustFind);
         $mustNotFind = Db::connect($config)->name('user')->where('username', 'chunice')->find();
@@ -229,7 +229,7 @@ EOF;
 
         $data = [
             ['username' => 'foo', 'password' => md5('foo'), 'status' => 1, 'create_time' => time()],
-            ['username' => 'bar', 'password' => md5('bar'), 'status' => 1, 'create_time' => time()]
+            ['username' => 'bar', 'password' => md5('bar'), 'status' => 1, 'create_time' => time()],
         ];
 
         $insertNum = Db::connect($config)->name('user')->insertAll($data);
@@ -238,7 +238,7 @@ EOF;
 
     public function testSelect()
     {
-        $config = $this->getConfig();
+        $config    = $this->getConfig();
         $mustFound = Db::connect($config)->name('user')->where('status', 1)->select();
         $this->assertNotEmpty($mustFound);
         $mustNotFound = Db::connect($config)->name('user')->where('status', 0)->select();
@@ -247,7 +247,7 @@ EOF;
 
     public function testValue()
     {
-        $config = $this->getConfig();
+        $config   = $this->getConfig();
         $username = Db::connect($config)->name('user')->where('id', 1)->value('username');
         $this->assertEquals('chunice_update', $username);
         $usernameNull = Db::connect($config)->name('user')->where('id', 0)->value('username');
@@ -256,7 +256,7 @@ EOF;
 
     public function testColumn()
     {
-        $config = $this->getConfig();
+        $config   = $this->getConfig();
         $username = Db::connect($config)->name('user')->where('status', 1)->column('username');
         $this->assertNotEmpty($username);
         $usernameNull = Db::connect($config)->name('user')->where('status', 0)->column('username');
@@ -267,13 +267,13 @@ EOF;
     public function testInsertGetId()
     {
         $config = $this->getConfig();
-        $id = Db::connect($config)->name('user')->order('id', 'desc')->value('id');
+        $id     = Db::connect($config)->name('user')->order('id', 'desc')->value('id');
 
         $data = [
             'username'    => uniqid(),
             'password'    => md5('chunice'),
             'status'      => 1,
-            'create_time' => time()
+            'create_time' => time(),
         ];
         $lastId = Db::connect($config)->name('user')->insertGetId($data);
         $this->assertEquals($id + 1, $lastId);
@@ -283,11 +283,11 @@ EOF;
     public function testGetLastInsId()
     {
         $config = $this->getConfig();
-        $data = [
+        $data   = [
             'username'    => uniqid(),
             'password'    => md5('chunice'),
             'status'      => 1,
-            'create_time' => time()
+            'create_time' => time(),
         ];
         $lastId = Db::connect($config)->name('user')->insertGetId($data);
 
@@ -308,7 +308,7 @@ EOF;
 
     public function testSetInc()
     {
-        $config = $this->getConfig();
+        $config           = $this->getConfig();
         $originCreateTime = Db::connect($config)->name('user')->where('id', 1)->value('create_time');
         Db::connect($config)->name('user')->where('id', 1)->setInc('create_time');
         $newCreateTime = Db::connect($config)->name('user')->where('id', 1)->value('create_time');
@@ -318,7 +318,7 @@ EOF;
 
     public function testSetDec()
     {
-        $config = $this->getConfig();
+        $config           = $this->getConfig();
         $originCreateTime = Db::connect($config)->name('user')->where('id', 1)->value('create_time');
         Db::connect($config)->name('user')->where('id', 1)->setDec('create_time');
         $newCreateTime = Db::connect($config)->name('user')->where('id', 1)->value('create_time');
@@ -341,12 +341,12 @@ EOF;
     public function testCache()
     {
         $config = $this->getConfig();
-        $result = Db::connect($config)->name('user')->where('id', 1)->cache('key', 60)->select();
-        $cache = \think\Cache::get('key');
+        $result = Db::connect($config)->name('user')->where('id', 1)->cache('key', 60)->find();
+        $cache  = \think\Cache::get('key');
         $this->assertEquals($result, $cache);
 
-        $updateCache = Db::connect($config)->name('user')->cache('key')->find(2);
-        $this->assertNotEquals($cache, $updateCache);
+        $updateCache = Db::connect($config)->name('user')->cache('key')->find(1);
+        $this->assertEquals($cache, $updateCache);
     }
 
 }
diff --git a/tests/thinkphp/library/think/template/taglib/cxTest.php b/tests/thinkphp/library/think/template/taglib/cxTest.php
index c1c67413..8aee392f 100644
--- a/tests/thinkphp/library/think/template/taglib/cxTest.php
+++ b/tests/thinkphp/library/think/template/taglib/cxTest.php
@@ -47,7 +47,7 @@ EOF;
 {/volist}
 EOF;
         $data = <<<EOF
-<?php if(is_array(\$list) || \$list instanceof \\think\\Collection): \$key = 0; \$__LIST__ = \$list;if( count(\$__LIST__)==0 ) : echo "" ;else: foreach(\$__LIST__ as \$key=>\$vo): \$mod = (\$key % 2 );++\$key;?>
+<?php if(is_array(\$list) || \$list instanceof \\think\\Collection || \$list instanceof \\think\\Paginator): \$key = 0; \$__LIST__ = \$list;if( count(\$__LIST__)==0 ) : echo "" ;else: foreach(\$__LIST__ as \$key=>\$vo): \$mod = (\$key % 2 );++\$key;?>
 
 <?php endforeach; endif; else: echo "" ;endif; ?>
 EOF;
@@ -88,7 +88,7 @@ EOF;
 {/foreach}
 EOF;
         $data = <<<EOF
-<?php if(is_array(\$list) || \$list instanceof \\think\\Collection): if( count(\$list)==0 ) : echo "empty" ;else: foreach(\$list as \$key=>\$val): ?>
+<?php if(is_array(\$list) || \$list instanceof \\think\\Collection || \$list instanceof \\think\\Paginator): if( count(\$list)==0 ) : echo "empty" ;else: foreach(\$list as \$key=>\$val): ?>
 
 <?php endforeach; endif; else: echo "empty" ;endif; ?>
 EOF;
@@ -389,7 +389,7 @@ default
 {/empty}
 EOF;
         $data = <<<EOF
-<?php if(empty(\$var) || (\$var instanceof \\think\\Collection && \$var->isEmpty())): ?>
+<?php if(empty(\$var) || ((\$var instanceof \\think\\Collection || \$var instanceof \\think\\Paginator ) && \$var->isEmpty())): ?>
 default
 <?php endif; ?>
 EOF;
@@ -402,7 +402,7 @@ default
 {/notempty}
 EOF;
         $data = <<<EOF
-<?php if(!(empty(\$var) || (\$var instanceof \\think\\Collection && \$var->isEmpty()))): ?>
+<?php if(!(empty(\$var) || ((\$var instanceof \\think\\Collection || \$var instanceof \\think\\Paginator ) && \$var->isEmpty()))): ?>
 default
 <?php endif; ?>
 EOF;
@@ -538,13 +538,13 @@ EOF;
     public function testUrl()
     {
         $template = new template();
-        $content = <<<EOF
+        $content  = <<<EOF
 {url link="Index/index"  /}
 EOF;
         $template->display($content);
         $this->expectOutputString(\think\Url::build('Index/index'));
     }
-    
+
     public function testFunction()
     {
         $template = new template();
diff --git a/tests/thinkphp/library/think/urlTest.php b/tests/thinkphp/library/think/urlTest.php
index acb43365..1cb64084 100644
--- a/tests/thinkphp/library/think/urlTest.php
+++ b/tests/thinkphp/library/think/urlTest.php
@@ -88,7 +88,7 @@ class urlTest extends \PHPUnit_Framework_TestCase
     public function testBuildNameRoute()
     {
         Route::get(['name', 'blog/:id'], 'index/blog');
-        $this->assertEquals([['blog/:id', ['id' => 1], null]], Route::name('name'));
+        $this->assertEquals([['blog/:id', ['id' => 1], null, null]], Route::name('name'));
         Config::set('url_html_suffix', 'shtml');
         $this->assertEquals('/blog/10.shtml', Url::build('name?id=10'));
     }
diff --git a/tests/thinkphp/library/think/validateTest.php b/tests/thinkphp/library/think/validateTest.php
index 4d7819b5..081a6f2b 100644
--- a/tests/thinkphp/library/think/validateTest.php
+++ b/tests/thinkphp/library/think/validateTest.php
@@ -88,7 +88,7 @@ class validateTest extends \PHPUnit_Framework_TestCase
             'date'       => '16-3-8',
             'ok'         => 'yes',
             'value'      => 100,
-            'bool'       => 'true',
+            'bool'       => true,
             'title'      => '流年ThinkPHP',
             'city'       => '上海',
             'nickname'   => '流年ThinkPHP_2016',