1 我是这样做的 2 1. searchModel里面： 3         $query = Order::find()->from(['o' => Order::tableName()]); 4         $query->joinWith(['dcUser0 u', 'product0 p']); 5 2. Order model里面 6     public function getDcUser0() 7     { 8         return $this->hasOne(DcUser::className(), ['uid' => 'uid']); 9     }10 11     public function getProduct0()12     {13         return $this->hasOne(Product::className(), ['product_id' => 'product_id'])->viaTable(OrderToProduct::tableName(), ['order_id' => 'order_id']);14     }15 16 17 表前缀：18 1. class OrderSearch extends Order19 2. Order model里面：20 public static function tableName()21     {22         return '{
      {%order}}';23     }24 25 gii生成Order时候要选有表前缀26 27 关联做好后 gridview写法：28             [29                 'label' => '商品名',30                 'attribute' => 'product_name',31                 'format' => 'raw',32                 'value' => 'product0.name',33                 'filter' => $searchModel->product_list,34             ],35 36 list37 38     public static function getActiveDataProvider(){39         return class_model::getActiveDataProvider(self::find(),5);40     }41 42 43     public function count($where_arg){44       return  self::find()->where($where_arg)->count();45     }46 47     public function all($where_arg){48         return self::find()->where($where_arg)->all();49     }