如何在按钮Yii2操作栏上调用确认对话框？

[
    'class' => 'yii\grid\ActionColumn',
    'template' => '{confirm} {view} {update} {delete}',
    'buttons' => [
        'confirm' => function ($url, $model, $key) {
            return Html::a('<span class="glyphicon glyphicon-ok"></span>', $url, [
                'title' => '确认',
                'data-confirm' => '确定要执行此操作吗？',
                'data-method' => 'post',
            ]);
        },
    ],
],