<?php
namespace Home\Model;
use Think\Model\RelationModel;
class InfoModel extends RelationModel{
    protected $tableName,$_validate,$_link,$modelinfo,$modelid,$fieldarr; 
    
    public function __construct(){  
        //模型id		
		$catid=I("catid",0,"int");
        if($catid){
			$this->modelid=$GLOBALS['cat'][$catid]["modelid"];      
		}else{
			$this->modelid=I("modelid",0,"int");
		}
        
        //模型信息
        $modelinfo=$GLOBALS['model'][$this->modelid]; 
        if(!$modelinfo){
            return false;
        }
        $this->modelinfo=$modelinfo;
        //
        $this->_validate[]=array("catid","require","请选择分类",1);
        //对应数据表
        $this->tableName="cms_".$modelinfo['table_name'];
        //关联模型
        $this->_link = array(
            //对应栏目表
            "cat"=>array(
                'mapping_type'  => self::BELONGS_TO,
                'foreign_key'   => 'catid',
            ), 
            //【对应副表】
            $this->tableName."_data"=>array(
                'mapping_type'  => self::HAS_ONE,
                'foreign_key'   => 'id',
            ),            
        );       
        //注意，这里父类析构函数一定要放到最下面，否则框架自带的方法不能使用
        parent::__construct();
    }


}