GridView 多个表关联 [ 2.0 版本 ]

目前表关系是
Orders:ID
productInfo:Orders_ID,products_ID
products:ID,Name

class OrdersSearch extends Orders
{
      public function search($params)
      {
            $query->joinWith(['productInfo','products']);//==>这边表已经关联了
      }
}

class Orders extends \yii\db\ActiveRecord
{
 	public function getProductInfo()
	{
		return $this->hasOne(ProductInfo::className(), ['DeviceID' => 'ID']);
	}
	
	public function getProducts()
	{
		return $this->hasOne(Products::className(), ['ID' => '`ProductInfo`.`ProductID`']);===>这边绑定上面获取到的值咋弄啊？
	}
}