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ThinkPHP 联系关系模型(二十)

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2016-06-13 12:12:561157browse

ThinkPHP 关联模型(二十)

ThinkPHP关联模型


两表关联查询:Message和  user  关联条件uid(参考手册:模型->关联模型)


  步骤:
一:创建Message表自定义的Mode  --->Home\Lib\Model\MessageModel.class.php
class MessageModel extends RelationModel{
//这是自动填充
protected $_auto=array(
array('time','time',1,'function'),
array('uid','getId',1,'callback')
);
//这是关联模型配置
protected $_link=array( 
'User'=> array(  
'mapping_type'=>BELONGS_TO,
'class_name'=>'User',
'foreign_key'=>'uid', //外键
'mapping_name'=>'user',
'mapping_fields'=>'username', //只取username字段
'as_fields'=>'username:uname',  //和当前表字段平级显示
//要是怕2个表字段有冲突用username:uname 就会显示成uname
),
);
protected function getId(){
return $_SESSION['id'];
}
}
?>
二:控制器
$message = D('Message');
$arr=$message->relation(true)->select();
dump($arr);
$this->assagin('list',$arr);
$this->display();
?>
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