本文實例講述了Yii2.0框架模型多表關聯查詢。分享給大家供大家參考，具體如下：
聯表查詢--hasMany：
use app/models/User;$right = Right::findOne(2);//$user = User::find()->where(['right_id' => $right->attributes['id']])->all();$user = $right->hasMany(User::className(),['right_id' => 'id'])->all();//right_id為User::className()表中字段，id為Right::findOne(2)表字段
多表關聯一對多查詢優化
如果多次用到同表相同查詢：
/models/Rught.php
namespace app/models;use /yii/db/ActiveRecord;class Right extends ActiveRecord{ public function getUsers() { $users = $this->hasMany(User::className(),['right_id' => 'id'])->asArray()p->all(); return $users; }}/controller/home/actionAbout
public function actionAbout(){ $right = Right::findOne(2);// $users = $right->getRights(); $users = $right->rights; dd($users); return $this->render('about');}多表關聯一對一查詢
/models/User.php
namespace app/models;use /yii/db/ActiveRecord;class User extends ActiveRecord{ public function getRight() { $right = $this->hasOne(Right::className,['id' => 'right_id'])->asArray(); return $right; }}/controller/home/actionAbout
$user = User::findOne(1);$right = $user->user;dd($right);return $this->render('about');join
//查詢關聯表的所有數據$user = User->find()->with('right')->asArray()->all();希望本文所述對大家基于Yii框架的PHP程序設計有所幫助。
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