GridView::widget([  'dataProvider' => $dataProvider,// 你传过来的ActiveDataProvider  // 'filterModel' => $searchModel,  'columns' => [  ['class' => 'yii\grid\SerialColumn'],// 第一列排序  'sid',// 第二列，sid，与你查询的model字段相对应，可以少，不可以多  [  'attribute' => 'sname',  'label'=>'姓名',// 自定义列名  ],// 第三列，sname  [  'class' => 'yii\grid\ActionColumn',// 动作列，默认三个动作，分别为{view}，{update}，{delete}  'header' => '操作',// 列名  'template' => '{stuent-view} {studnet-update} {student-delete}',// 定义这一列里面有几个操作，这里为查看，更新，删除  'buttons' => [// 为你template中声明的操作声明动作  'stuent-view' => function ($url, $models, $key) {// 对应{student-view}，三个参数，最主要的$key，为你model主键的id  $url = ['student/view', 'id'=>$key];// 为下面a链接的url，此处指向StudentController的actionView方法  $options = [  'title' => '查看',  'aria-label' => '查看',  'data-pjax' => '0',  ];  return Html::a('<span class="glyphicon glyphicon-eye-open"></span>', $url, $options);  },  'studnet-update' => function ($url, $models, $key) {// 对应{student-update}  $url = ['student/update', 'id'=>$key];  $options = [  'title' => '更新',  'aria-label' => '更新',  'data-pjax' => '0',  ];  return Html::a('<span class="glyphicon glyphicon-pencil"></span>', $url, $options);  },  'student-delete' => function ($url, $models, $key) {// 对应{student-delete}  $url = ['student/delete', 'id'=>$key];  $options = [  'title' => '删除',  'aria-label' => '删除',  'data-pjax' => '0',  'data-method' => 'post'  ];  return Html::a('<span class="glyphicon glyphicon-trash"></span>', $url, $options);  }  ]  ],// 操作  ],  ]);