GridView多表关联

有些时候，需要多表关联查询，使用SqlDataProvider比较灵活

Controller中

use yii\data\SqlDataProvider;

$dataProvider = new SqlDataProvider([
    'sql' =>$sql,
    'totalCount' => $totalCount,
    'pagination' => [
        'pageSize' => ,
    ],
]); 

$gridcolumn[]=['class'=>'kartik\grid\SerialColumn'];
$gridcolumn[]=['label'=>'AA','value'=>"name"];
//省略

View中

<?= GridView::widget([
       'dataProvider' => $dataProvider,
       'columns' =>$gridcolumn,
　　　　
   ]); ?>