YII创建按钮

<?= Html::a('更新', ['/ad-detail/update', 'id' => $info['id']], ['class' => 'btn btn-primary btn-xs']) ?><?= Html::a('删除', ['/ad-detail/delete', 'id' => $info['id'],'aid'=>$model->id], [    'class' => 'btn btn-danger btn-xs',    'data' => [        'confirm' => '你确定要删除这个广告详情?',        'method' => 'post',    ],]) ?>

创建带提示的按钮