ThinkPHP/Library/Think/Model/RelationModel.class.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Model;
use Think\Model;
/**
 * ThinkPHP关联模型扩展 
 */
class RelationModel extends Model {

    const   HAS_ONE     =   1;
    const   BELONGS_TO  =   2;
    const   HAS_MANY    =   3;
    const   MANY_TO_MANY=   4;

    // 关联定义
    protected    $_link = array();

    /**
     * 动态方法实现
     * @access public
     * @param string $method 方法名称
     * @param array $args 调用参数
     * @return mixed
     */
    public function __call($method,$args) {
        if(strtolower(substr($method,0,8))=='relation'){
            $type    =   strtoupper(substr($method,8));
            if(in_array($type,array('ADD','SAVE','DEL'),true)) {
                array_unshift($args,$type);
                return call_user_func_array(array(&$this, 'opRelation'), $args);
            }
        }else{
            return parent::__call($method,$args);
        }
    }

    /**
     * 得到关联的数据表名
     * @access public
     * @return string
     */
    public function getRelationTableName($relation) {
        $relationTable  = !empty($this->tablePrefix) ? $this->tablePrefix : '';
        $relationTable .= $this->tableName?$this->tableName:$this->name;
        $relationTable .= '_'.$relation->getModelName();
        return strtolower($relationTable);
    }

    // 查询成功后的回调方法
    protected function _after_find(&$result,$options) {
        // 获取关联数据 并附加到结果中
        if(!empty($options['link']))