GridView怎么在头部或者底部加按钮 [ 2.0 版本 ]

http://www.yiiframework.com/doc-2.0/yii-grid-column.html#$footer-detail

look

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],
        'name',
        ...
        [
            'class' => 'yii\grid\ActionColumn',
            'header' => '操作',
            'template' => '{add-equipment}&nbsp&nbsp{update}&nbsp&nbsp{delete}',
            'headerOptions' => ['width' => '10%'],
            'buttons' => [
                "add-equipment" => function ($url, $model, $key) {
                    $url = 'add-equipment?building_id='.$model->id;
                    return Html::a('<span class="fa  fa-fire-extinguisher"></span>', $url, ['title' => '消防设备'] );
                },
            ],
        ],
    ],
]); ?>

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