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656 lines
18 KiB
PHP
656 lines
18 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think;
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use think\Cache;
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abstract class Model implements \JsonSerializable, \ArrayAccess
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{
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const HAS_ONE = 1;
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const HAS_MANY = 2;
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const BELONGS_TO = 3;
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const BELONGS_TO_MANY = 4;
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// 当前实例
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private static $instance;
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// 数据库对象池
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private static $links = [];
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// 数据库配置
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protected static $connection;
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// 数据表名称
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protected static $tableName;
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// 回调事件
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protected static $event = [];
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// 数据信息
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protected $data = [];
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// 缓存数据
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protected $cache = [];
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// 记录改变字段
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protected $change = [];
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// 数据表主键
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protected $pk = 'id';
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// 错误信息
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protected $error;
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// 当前模型名称
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protected $name;
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// 字段验证规则
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protected $validate;
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// 字段完成规则
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protected $auto = [];
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// 新增的字段完成
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protected $insert = [];
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// 更新的字段完成
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protected $update = [];
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// 当前执行的关联类型
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private $relation;
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/**
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* 架构函数
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* @access public
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* @param array $data 数据
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*/
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public function __construct($data = [])
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{
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$this->data = $data;
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$this->name = basename(str_replace('\\', '/', get_class($this)));
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}
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// JsonSerializable
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public function jsonSerialize()
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{
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return $this->data;
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}
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// ArrayAccess
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public function offsetSet($name, $value)
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{
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$this->__set($name, $value);
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}
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public function offsetExists($name)
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{
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return $this->__isset($name);
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}
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public function offsetUnset($name)
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{
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$this->__unset($name);
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}
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public function offsetGet($name)
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{
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return $this->__get($name);
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}
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/**
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* 设置数据对象值
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* @access public
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* @param mixed $data 数据
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* @return Model
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*/
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public function data($data = '')
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{
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if (is_object($data)) {
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$data = get_object_vars($data);
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} elseif (!is_array($data)) {
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throw new Exception('data type invalid', 10300);
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}
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$this->data = $data;
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return $this;
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}
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/**
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* 转换为数组
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* @access public
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* @return Model
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*/
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public function toArray()
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{
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if (!empty($this->data)) {
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return $this->data;
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} else {
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return [];
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}
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}
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/**
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* 设置数据对象的值 修改器
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* @access public
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* @param string $name 名称
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* @param mixed $value 值
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* @return void
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*/
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public function __set($name, $value)
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{
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// 检测修改器
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$method = 'set' . Loader::parseName($name, 1) . 'Attr';
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if (method_exists($this, $method)) {
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$value = $this->$method($value, $this->data);
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}
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// 设置数据对象属性
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if (isset($this->data[$name]) && $this->data[$name] != $value && !in_array($name, $this->change)) {
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$this->change[] = $name;
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}
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$this->data[$name] = $value;
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}
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/**
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* 获取数据对象的值 获取器
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* @access public
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* @param string $name 名称
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* @return mixed
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*/
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public function __get($name)
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{
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$value = isset($this->data[$name]) ? $this->data[$name] : null;
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// 检测获取器
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$method = 'get' . Loader::parseName($name, 1) . 'Attr';
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if (method_exists($this, $method)) {
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return $this->$method($value, $this->data);
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}
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if (is_null($value) && method_exists($this, $name)) {
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// 执行关联定义方法 （ 关联定义方法始终返回Db对象）
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$db = $this->$name();
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// 判断关联类型执行查询
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switch ($this->relation) {
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case self::HAS_ONE:
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$result = $db->find();
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break;
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case self::HAS_MANY:
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$result = $db->select();
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break;
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case self::BELONGS_TO:
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$result = $db->find();
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break;
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case self::BELONGS_TO_MANY:
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$result = $db->select();
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break;
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}
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// 避免影响其它操作方法
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$this->relation = null;
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return $result;
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}
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return $value;
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}
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/**
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* 检测数据对象的值
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* @access public
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* @param string $name 名称
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* @return boolean
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*/
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public function __isset($name)
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{
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return isset($this->data[$name]);
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}
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/**
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* 销毁数据对象的值
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* @access public
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* @param string $name 名称
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* @return void
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*/
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public function __unset($name)
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{
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unset($this->data[$name]);
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}
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/**
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* 判断一个字段名是否为主键字段
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* @access public
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* @param string $key 名称
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* @return void
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*/
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protected function isPk($key)
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{
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$pk = $this->pk;
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if (is_string($pk) && $pk == $key) {
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return true;
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} elseif (is_array($pk) && in_array($key, $pk)) {
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return true;
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}
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return false;
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}
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/**
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* 保存当前数据对象的值（自动识别新增或者更新）
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* @access public
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* @param array $data 数据
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* @param array $where 更新条件
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* @return void
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*/
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public function save($data = [], $where = [])
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{
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if (!empty($data)) {
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foreach ($data as $key => $value) {
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$this->__set($key, $value);
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}
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}
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$data = $this->data;
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// 数据自动验证
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if (!$this->dataValidate($data)) {
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return false;
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}
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// 数据自动完成
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foreach ($this->auto as $name => $rule) {
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if (!in_array($name, $this->change)) {
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$this->change[] = $name;
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}
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$data[$name] = is_callable($rule) ? call_user_func_array($rule, [ & $data]) : $rule;
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}
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// 检测是否为更新数据
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if ($this->isUpdate($data)) {
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if (false === $this->trigger('before_update', $this)) {
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return false;
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}
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// 更新的时候检测字段更改
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if (!empty($this->change)) {
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foreach ($data as $key => $val) {
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if (!in_array($key, $this->change) && !$this->isPk($key) && !isset($this->relation[$key])) {
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unset($data[$key]);
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}
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}
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}
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// 自动更新
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foreach ($this->update as $name => $rule) {
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$data[$name] = is_callable($rule) ? call_user_func_array($rule, [ & $data]) : $rule;
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}
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$db = self::db();
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if (!empty($where)) {
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$db->where($where);
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}
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$result = $db->update($data);
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$this->trigger('after_update', $this);
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return $result;
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} else {
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if (false === $this->trigger('before_insert', $this)) {
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return false;
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}
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// 自动写入
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foreach ($this->insert as $name => $rule) {
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$data[$name] = is_callable($rule) ? call_user_func_array($rule, [ & $data]) : $rule;
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}
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$result = self::db()->insert($data);
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// 获取自动增长主键
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$insertId = self::db()->getLastInsID();
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if (is_string($this->pk) && $insertId) {
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$data[$this->pk] = $insertId;
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$this->data[$this->pk] = $insertId;
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}
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$this->trigger('after_insert', $this);
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return $insertId ?: $result;
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}
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}
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/**
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* 删除当前的记录
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* @access public
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* @return integer
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*/
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public function delete()
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{
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$data = $this->data;
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if (false === $this->trigger('before_delete', $this)) {
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return false;
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}
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$result = self::db()->delete($data);
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$this->trigger('after_delete', $this);
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return $result;
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}
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/**
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* 设置字段验证
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* @access public
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* @param array|bool $rule 验证规则 true表示自动读取验证器类
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* @param array $msg 提示信息
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* @return Model
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*/
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public function validate($rule = true, $msg = null)
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{
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if (true === $rule) {
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$this->validate = $this->name;
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} elseif (is_array($rule)) {
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$this->validate = [
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'rule' => $rule,
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'msg' => is_array($msg) ? $msg : [],
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];
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}
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return $this;
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}
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/**
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* 设置字段自动完成（包括新增和更新）
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* @access public
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* @param string $field 字段名或者数组规则
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* @param array|null $rule 完成规则
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* @return Model
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*/
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public function auto($field, $rule = null)
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{
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if (is_array($field)) {
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$this->auto = array_merge($this->auto, $field);
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} else {
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$this->auto[$field] = $rule;
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}
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return $this;
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}
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/**
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* 设置写入自动完成
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* @access public
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* @param string $field 字段名或者数组规则
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* @param array|null $rule 完成规则
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* @return Model
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*/
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public function autoInsert($field, $rule = null)
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{
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if (is_array($field)) {
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$this->insert = array_merge($this->insert, $field);
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} else {
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$this->insert[$field] = $rule;
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}
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return $this;
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}
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/**
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* 设置更新自动完成
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* @access public
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* @param string $field 字段名或者数组规则
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* @param array|null $rule 完成规则
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* @return Model
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*/
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public function autoUpdate($field, $rule = null)
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{
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if (is_array($field)) {
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$this->update = array_merge($this->update, $field);
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} else {
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$this->update[$field] = $rule;
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}
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return $this;
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}
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/**
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* 数据自动验证
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* @access protected
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* @param array $data 数据
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* @return void
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*/
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protected function dataValidate(&$data)
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{
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if (!empty($this->validate)) {
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$info = $this->validate;
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if (is_array($info)) {
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$validate = Loader::validate(Config::get('default_validate'));
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$validate->rule($info['rule']);
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$validate->message($info['msg']);
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} else {
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$name = is_string($info) ? $info : $this->name;
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if (strpos($name, '.')) {
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list($name, $scene) = explode('.', $name);
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}
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$validate = Loader::validate($name);
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if (!empty($scene)) {
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$validate->scene($scene);
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}
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}
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if (!$validate->check($data)) {
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$this->error = $validate->getError();
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return false;
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}
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$this->validate = null;
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}
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return true;
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}
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/**
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* 是否为更新操作
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* @access public
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* @param mixed $data 数据
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* @return bool
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*/
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public function isUpdate($data = [])
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{
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$data = $data ?: $this->data;
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// 判断主键
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$pk = $this->pk;
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if (is_string($pk) && isset($data[$pk])) {
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return true;
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} elseif (is_array($pk)) {
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foreach ($pk as $field) {
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if (isset($data[$field])) {
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return true;
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}
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}
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}
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// TODO 完善没有主键或者其他的情况
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return false;
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}
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/**
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* 返回模型的错误信息
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* @access public
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* @return string
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*/
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public function getError()
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{
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return $this->error;
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}
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/**
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* 注册回调方法
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* @access public
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* @param string $event 事件名
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* @param callable $callback 回调方法
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*/
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public static function event($event, $callback)
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{
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self::$event[$event] = $callback;
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}
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/**
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* 触发事件
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* @access public
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* @param string $event 事件名
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* @param mixed $params 传入参数（引用）
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*/
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protected function trigger($event, &$params)
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{
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if (isset(self::$event[$event]) && is_callable(self::$event[$event])) {
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$result = call_user_func_array(self::$event[$event], [ & $params]);
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return false === $result ? false : true;
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}
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return true;
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}
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/**
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* 创建数据并写入
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* @access public
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* @param mixed $data 数据 支持数组或者对象
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* @return void
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*/
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public static function create($data = [])
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{
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$model = new static();
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return $model->data($data)->save();
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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 主键值
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* @param bool $cache 是否缓存
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* @return mixed
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*/
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public static function get($data = '', $cache = false)
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{
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if ($cache) {
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// 查找是否存在缓存
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$name = basename(str_replace('\\', '/', get_called_class()));
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$guid = 'model_' . $name . '_' . $data;
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$result = Cache::get($guid);
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if ($result) {
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return new static($result);
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}
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}
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$result = self::db()->find($data);
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if ($cache) {
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// 缓存模型数据
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Cache::set($guid, $result->toArray());
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}
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return $result;
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}
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/**
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* 查找多条记录
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* @access public
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* @param mixed $data 主键列表
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* @return array|string
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*/
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public static function all($data = [])
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{
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return self::db()->select($data);
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}
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/**
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* 删除记录
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* @access public
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* @param mixed $data 主键列表
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* @return integer
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*/
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public static function destroy($data)
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{
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$model = new static();
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$resultSet = $model->select($data);
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if ($resultSet) {
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foreach ($resultSet as $data) {
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$result = $data->delete();
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}
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}
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return $result;
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}
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// 解析模型的完整命名空间
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protected function parseModel($model)
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{
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if (false === strpos($model, '\\')) {
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$path = explode('\\', get_called_class());
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array_pop($path);
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array_push($path, $model);
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$model = implode('\\', $path);
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}
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return $model;
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}
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// HAS ONE
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public function hasOne($model, $foreignKey = '', $localKey = '')
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{
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$model = $this->parseModel($model);
|
||
$localKey = $localKey ?: $this->pk;
|
||
$foreignKey = $foreignKey ?: strtolower($this->name) . '_id';
|
||
$this->relation = self::HAS_ONE;
|
||
return $model::where($foreignKey, $this->data[$localKey]);
|
||
}
|
||
|
||
// BELONGS TO
|
||
public function belongsTo($model, $localKey = '', $foreignKey = '')
|
||
{
|
||
$model = $this->parseModel($model);
|
||
$foreignKey = $foreignKey ?: $this->pk;
|
||
$localKey = $localKey ?: strtolower(basename(str_replace('\\', '/', $model))) . '_id';
|
||
$this->relation = self::BELONGS_TO;
|
||
return $model::where($foreignKey, $this->data[$localKey]);
|
||
}
|
||
|
||
// HAS MANY
|
||
public function hasMany($model, $foreignKey = '', $localKey = '')
|
||
{
|
||
$model = $this->parseModel($model);
|
||
$localKey = $localKey ?: $this->pk;
|
||
$foreignKey = $foreignKey ?: strtolower($this->name) . '_id';
|
||
$this->relation = self::HAS_MANY;
|
||
return $model::where($foreignKey, $this->data[$localKey]);
|
||
}
|
||
|
||
// BELONGS TO MANY
|
||
public function belongsToMany($model, $localKey = '', $foreignKey = '')
|
||
{
|
||
$model = $this->parseModel($model);
|
||
$foreignKey = $foreignKey ?: $this->pk;
|
||
$localKey = $localKey ?: strtolower(basename(str_replace('\\', '/', $model))) . '_id';
|
||
$this->relation = self::BELONGS_TO_MANY;
|
||
return $model::where($foreignKey, $this->data[$localKey]);
|
||
}
|
||
|
||
/**
|
||
* 实例化模型
|
||
* @access public
|
||
* @param array $config 配置参数
|
||
* @return object
|
||
*/
|
||
public static function instance()
|
||
{
|
||
if (is_null(self::$instance)) {
|
||
self::$instance = new static();
|
||
}
|
||
return self::$instance;
|
||
}
|
||
|
||
/**
|
||
* 初始化数据库对象
|
||
* @access private
|
||
* @return object
|
||
*/
|
||
private static function db()
|
||
{
|
||
$model = get_called_class();
|
||
$name = basename(str_replace('\\', '/', $model));
|
||
if (!isset(self::$links[$model])) {
|
||
self::$links[$model] = Db::connect(static::$connection);
|
||
self::$links[$model]->name($name);
|
||
if (isset(static::$tableName)) {
|
||
self::$links[$model]->setTable(static::$tableName);
|
||
}
|
||
}
|
||
// 设置当前模型 确保查询返回模型对象
|
||
self::$links[$model]->model($model);
|
||
// 返回当前数据库对象
|
||
return self::$links[$model];
|
||
}
|
||
|
||
public static function __callStatic($method, $params)
|
||
{
|
||
return call_user_func_array([self::db(), $method], $params);
|
||
}
|
||
|
||
}
|