mirror of
https://gitee.com/fastadminnet/framework.git
synced 2026-07-01 20:52:48 +08:00
分页功能
This commit is contained in:
@@ -13,12 +13,15 @@ namespace think\db;
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use PDO;
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use think\Cache;
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use think\Collection;
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use think\Config;
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use think\Db;
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use think\Exception;
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use think\exception\DbException;
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use think\Loader;
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use think\Model;
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use think\model\Relation;
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use think\Paginator;
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class Query
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{
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@@ -35,7 +38,8 @@ class Query
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/**
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* 架构函数
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* @access public
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* @param object $connection 数据库对象实例
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* @param object|string $connection 数据库对象实例
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* @throws Exception
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*/
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public function __construct($connection = '')
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{
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@@ -49,6 +53,8 @@ class Query
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* @param string $method 方法名称
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* @param array $args 调用参数
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* @return mixed
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* @throws DbException
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* @throws Exception
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*/
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public function __call($method, $args)
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{
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@@ -75,7 +81,7 @@ class Query
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protected function builder()
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{
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static $builder = [];
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$driver = $this->driver;
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$driver = $this->driver;
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if (!isset($builder[$driver])) {
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$class = '\\think\\db\\builder\\' . ucfirst($driver);
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$builder[$driver] = new $class($this->connection);
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@@ -88,7 +94,7 @@ class Query
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/**
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* 得到某个字段的值
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return mixed
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*/
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public function value($field)
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@@ -117,8 +123,8 @@ class Query
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/**
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* 得到某个列的数组
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* @access public
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* @param string $field 字段名 多个字段用逗号分隔
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* @param string $key 索引
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* @param string $field 字段名 多个字段用逗号分隔
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* @param string $key 索引
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* @return array
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*/
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public function column($field, $key = '')
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@@ -156,7 +162,7 @@ class Query
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$result = [];
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}
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}
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if (isset($cache)) {
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if (isset($cache) && isset($guid)) {
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// 缓存数据
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Cache::set($guid, $result, $cache['expire']);
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}
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@@ -170,7 +176,7 @@ class Query
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/**
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* COUNT查询
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return integer
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*/
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public function count($field = '*')
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@@ -181,7 +187,7 @@ class Query
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/**
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* SUM查询
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return integer
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*/
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public function sum($field = '*')
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@@ -193,7 +199,7 @@ class Query
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/**
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* MIN查询
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return integer
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*/
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public function min($field = '*')
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@@ -205,7 +211,7 @@ class Query
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/**
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* MAX查询
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return integer
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*/
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public function max($field = '*')
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@@ -217,7 +223,7 @@ class Query
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/**
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* AVG查询
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* @access public
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* @param string $field 字段名
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* @param string $field 字段名
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* @return integer
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*/
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public function avg($field = '*')
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@@ -230,8 +236,8 @@ class Query
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* 设置记录的某个字段值
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* 支持使用数据库字段和方法
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* @access public
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* @param string|array $field 字段名
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* @param string $value 字段值
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* @param string|array $field 字段名
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* @param string $value 字段值
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* @return integer
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*/
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public function setField($field, $value = '')
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@@ -247,9 +253,9 @@ class Query
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/**
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* 字段值(延迟)增长
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* @access public
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* @param string $field 字段名
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* @param integer $step 增长值
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* @param integer $lazyTime 延时时间(s)
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* @param string $field 字段名
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* @param integer $step 增长值
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* @param integer $lazyTime 延时时间(s)
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* @return integer|true
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* @throws \think\Exception
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*/
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@@ -274,9 +280,9 @@ class Query
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/**
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* 字段值(延迟)减少
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* @access public
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* @param string $field 字段名
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* @param integer $step 减少值
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* @param integer $lazyTime 延时时间(s)
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* @param string $field 字段名
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* @param integer $step 减少值
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* @param integer $lazyTime 延时时间(s)
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* @return integer|true
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* @throws \think\Exception
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*/
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@@ -302,9 +308,9 @@ class Query
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* 延时更新检查 返回false表示需要延时
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* 否则返回实际写入的数值
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* @access public
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* @param string $guid 写入标识
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* @param integer $step 写入步进值
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* @param integer $lazyTime 延时时间(s)
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* @param string $guid 写入标识
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* @param integer $step 写入步进值
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* @param integer $lazyTime 延时时间(s)
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* @return false|integer
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*/
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protected function lazyWrite($guid, $step, $lazyTime)
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@@ -359,7 +365,7 @@ class Query
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}
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if (count($join)) {
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// 有设置第二个元素则把第二元素作为表前缀
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$table = (string) current($join) . $table;
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$table = (string)current($join) . $table;
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} elseif (false === strpos($table, '.')) {
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// 加上默认的表前缀
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$table = $prefix . $table;
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@@ -482,7 +488,7 @@ class Query
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/**
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* 分析查询表达式
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* @access public
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* @param string|array|Closure $field 查询字段
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* @param string|array|\Closure $field 查询字段
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* @param mixed $op 查询表达式
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* @param mixed $condition 查询条件
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* @param string $operator and or
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@@ -491,7 +497,7 @@ class Query
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protected function parseWhereExp($operator, $field, $op, $condition, $param = [])
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{
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if ($field instanceof \Closure) {
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call_user_func_array($field, [ & $this]);
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call_user_func_array($field, [& $this]);
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return;
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}
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@@ -613,6 +619,51 @@ class Query
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return $this;
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}
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/**
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* 分页查询
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* @param int $listRows 每页数量
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* @param bool $simple 简洁模式
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* @param array $config 配置参数
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* page:当前页,
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* path:url路径,
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* query:url额外参数,
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* fragment:url锚点,
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* var_page:分页变量,
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* type:分页类名,
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* namespace:分页类命名空间
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* @return \think\paginator\Collection
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* @throws DbException
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*/
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public function paginate($listRows = 15, $simple = false, $config = [])
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{
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$config = array_merge(Config::get('paginate'), $config);
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$class = (!empty($config['namespace']) ? $config['namespace'] : '\\think\\paginator\\driver\\') . ucwords($config['type']);
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$page = isset($config['page']) ? (int)$config['page'] : call_user_func([
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$class,
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'getCurrentPage'
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], $config['var_page']);
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$page = $page < 1 ? 1 : $page;
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$config['path'] = isset($config['path']) ? $config['path'] : call_user_func([$class, 'getCurrentPath']);
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/** @var Paginator $paginator */
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if (!$simple) {
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$options = $this->getOptions();
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$total = $this->count();
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$results = $this->options($options)->page($page, $listRows)->select();
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$paginator = new $class($results, $listRows, $page, $simple, $total, $config);
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} else {
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$results = $this->limit(($page - 1) * $listRows, $listRows + 1)->select();
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$paginator = new $class($results, $listRows, $page, $simple, null, $config);
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}
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return $paginator->items();
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}
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/**
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* 指定数据表
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* @access public
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@@ -833,7 +884,7 @@ class Query
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/**
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* 指定当前模型
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* @access public
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* @param string $model 模型类名称
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* @param string $model 模型类名称
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* @return $this
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*/
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public function model($model)
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@@ -876,7 +927,7 @@ class Query
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* 获取数据表信息
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* @access public
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* @param string $fetch 获取信息类型 包括 fields type bind pk
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* @param string $tableName 数据表名 留空自动获取
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* @param string $tableName 数据表名 留空自动获取
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* @return mixed
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*/
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public function getTableInfo($tableName = '', $fetch = '')
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@@ -896,7 +947,7 @@ class Query
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if (!isset($_info[$guid])) {
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$info = $this->connection->getFields($tableName);
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$fields = array_keys($info);
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$bind = $type = [];
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$bind = $type = [];
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foreach ($info as $key => $val) {
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// 记录字段类型
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$type[$key] = $val['type'];
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@@ -937,8 +988,8 @@ class Query
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/**
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* 参数绑定
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* @access public
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* @param mixed $key 参数名
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* @param mixed $value 绑定变量值
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* @param mixed $key 参数名
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* @param mixed $value 绑定变量值
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* @param integer $type 绑定类型
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* @return $this
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*/
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@@ -992,7 +1043,9 @@ class Query
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$i = 0;
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$currentModel = $this->options['model'];
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$class = new $currentModel;
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/** @var Model $class */
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$class = new $currentModel;
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foreach ($with as $key => $relation) {
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$closure = false;
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if ($relation instanceof \Closure) {
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@@ -1001,10 +1054,11 @@ class Query
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$relation = $key;
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$with[$key] = $key;
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} elseif (is_string($relation) && strpos($relation, '.')) {
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$with[$key] = $relation;
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$with[$key] = $relation;
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list($relation, $subRelation) = explode('.', $relation, 2);
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}
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/** @var Relation $model */
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$model = $class->$relation();
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$info = $class->getRelationInfo();
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if (in_array($info['type'], [Relation::HAS_ONE, Relation::BELONGS_TO])) {
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@@ -1020,7 +1074,7 @@ class Query
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$this->join($joinTable . ' ' . $joinName, $name . '.' . $info['localKey'] . '=' . $joinName . '.' . $info['foreignKey'])->field(true, false, $joinTable, $joinName, $joinName . '__');
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if ($closure) {
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// 执行闭包查询
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call_user_func_array($closure, [ & $this]);
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call_user_func_array($closure, [& $this]);
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}
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$i++;
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} elseif ($closure) {
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@@ -1035,7 +1089,7 @@ class Query
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/**
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* 设置当前字段添加的表别名
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* @access public
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* @param string $relation 关联名称
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* @param string $via
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* @return Db
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*/
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public function via($via = '')
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@@ -1100,7 +1154,7 @@ class Query
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* @access public
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* @param mixed $data 数据
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* @param boolean $replace 是否replace
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* @param boolean $getLastInsID 是否获取自增ID
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* @param boolean $getLastInsID 是否获取自增ID
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* @return integer
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*/
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public function insert(array $data, $replace = false, $getLastInsID = false)
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@@ -1149,8 +1203,8 @@ class Query
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* @access public
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* @param string $fields 要插入的数据表字段名
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* @param string $table 要插入的数据表名
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* @param array $option 查询数据参数
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* @return integer
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* @return int
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* @throws \think\exception\PDOException
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*/
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public function selectInsert($fields, $table)
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{
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@@ -1166,7 +1220,9 @@ class Query
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* 更新记录
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* @access public
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* @param mixed $data 数据
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* @return integer
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* @return int
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* @throws Exception
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* @throws \think\exception\PDOException
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*/
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public function update(array $data)
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{
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@@ -1208,15 +1264,18 @@ class Query
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/**
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* 查找记录
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* @access public
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* @param array $options 表达式
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* @return \PDOStatement|array|string|false
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* @param array $data
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* @return Collection|false|\PDOStatement|string
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* @throws DbException
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* @throws Exception
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* @throws \think\exception\PDOException
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*/
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public function select($data = [])
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{
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if ($data instanceof Query) {
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return $data->select();
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} elseif ($data instanceof \Closure) {
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call_user_func_array($data, [ & $this]);
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call_user_func_array($data, [& $this]);
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}
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// 分析查询表达式
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$options = $this->parseExpress();
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@@ -1265,6 +1324,7 @@ class Query
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// 生成模型对象
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$model = $options['model'];
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foreach ($resultSet as $key => $result) {
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/** @var Model $result */
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$result = new $model($result);
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$result->isUpdate(true);
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// 关联查询
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@@ -1281,21 +1341,24 @@ class Query
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} elseif (!empty($options['fail'])) {
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throw new DbException('Data not Found', $options, $sql);
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}
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return $resultSet;
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return Collection::make($resultSet);
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}
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/**
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* 查找单条记录
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* @access public
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* @param array $data 表达式
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* @return \think\Model|\PDOStatement|array|string|false
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* @return array|false|\PDOStatement|string|Model
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* @throws DbException
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* @throws Exception
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* @throws \think\exception\PDOException
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*/
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public function find($data = [])
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{
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if ($data instanceof Query) {
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return $data->find();
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} elseif ($data instanceof \Closure) {
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call_user_func_array($data, [ & $this]);
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call_user_func_array($data, [& $this]);
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}
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// 分析查询表达式
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$options = $this->parseExpress();
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@@ -1403,8 +1466,9 @@ class Query
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/**
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* 创建子查询SQL
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* @access public
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* @param array $data 表达式
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* @param bool $sub
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* @return string
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* @throws DbException
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*/
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public function buildSql($sub = true)
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{
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@@ -1415,7 +1479,9 @@ class Query
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* 删除记录
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* @access public
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* @param array $data 表达式
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* @return integer
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* @return int
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* @throws Exception
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* @throws \think\exception\PDOException
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*/
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public function delete($data = [])
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{
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@@ -1483,10 +1549,10 @@ class Query
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if (isset($options['page'])) {
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// 根据页数计算limit
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list($page, $listRows) = $options['page'];
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$page = $page > 0 ? $page : 1;
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$listRows = $listRows > 0 ? $listRows : (is_numeric($options['limit']) ? $options['limit'] : 20);
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$offset = $listRows * ($page - 1);
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$options['limit'] = $offset . ',' . $listRows;
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$page = $page > 0 ? $page : 1;
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$listRows = $listRows > 0 ? $listRows : (is_numeric($options['limit']) ? $options['limit'] : 20);
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$offset = $listRows * ($page - 1);
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$options['limit'] = $offset . ',' . $listRows;
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}
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$this->options = [];
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