tp3.2关联模型 BELONGS_TO

<?php

namespace Home\Model;

use Think\Model\RelationModel;

class AttenModel extends RelationModel {
protected $tableName = 'attention';
protected $_link = array(
'BabyUser' => array(
'mapping_type' => self::BELONGS_TO,
'foreign_key' => 'bid',
),
);
}