视图层 表格里面的 的超链接

<div class="col-sm-12">
    <?= GridView::widget([
      'dataProvider' => $dataProvider,
       'columns' =>[
              [
                  'class' => 'yiigridActionColumn',  //必须
                  'header' => '操作',   //名字可以随便换
                 'template' => '{detail}',  //必须
                 'buttons' => [
                           'detail' => function ($url,$model,$key) {  //这里三个参数，必须，如果只写一个$model，会提示 Trying to get property of non-object
                              if ($model->is_return)
                                  return Html::a('详情', 'group/order/detail?id=' . $model->id);
                              else
                                   return '\';
                             }
                          ]
          ],
 ]
]};
</div>