Normally, after clicking the delete button in gridview, the record will be deleted and the page will refresh, but the page number in query string is lost. This is not always the case we expect.

How to refresh current page with pjax after deleting the record? It seems there is no simple solutions, This is my way, it works well, although it is not clean

1. Controller file

    public function actionDelete($id)
    {
        $this->findModel($id)->delete();
        if (Yii::$app->request->isAjax) {
            Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
            return ['success' => true];
        }
        return $this->redirect(['index']);
    }

1. index.php(view file)

<?php
    $this->registerJs("
        $(document).on('ready pjax:success', function() {
            $('.pjax-delete-link').on('click', function(e) {
                e.preventDefault();
                var deleteUrl = $(this).attr('delete-url');
                var pjaxContainer = $(this).attr('pjax-container');
                var result = confirm('Delete this item, are you sure?');                                
                if(result) {
                    $.ajax({
                        url: deleteUrl,
                        type: 'post',
                        error: function(xhr, status, error) {
                            alert('There was an error with your request.' + xhr.responseText);
                        }
                    }).done(function(data) {
                        $.pjax.reload('#' + $.trim(pjaxContainer), {timeout: 3000});
                    });
                }
            });

        });
    ");
?>

<?php Pjax::begin(['id' => 'my_pjax']); ?>
    <div class="shop-index">
        <?= GridView::widget([
            'dataProvider' => $dataProvider,
            'filterModel' => $searchModel,
            'columns' => [
                'id',
                [
                    'class' => 'yii\grid\ActionColumn',
                    'buttons' => [
                        'update' => function ($url, $model) {
                            return Html::a('<span class="glyphicon glyphicon-pencil"></span>', $url, [
                                'class' => 'pjax-update-link',
                                'title' => Yii::t('yii', 'Update'),
                            ]);
                        },
                        'delete' => function ($url, $model) {
                            return Html::a('<span class="glyphicon glyphicon-trash"></span>', false, [
                                'class' => 'pjax-delete-link',
                                'delete-url' => $url,
                                'pjax-container' => 'my_pjax',
                                'title' => Yii::t('yii', 'Delete')
                            ]);
                        }
                    ],
                ],
            ],
        ]); ?>
    </div>
<?php Pjax::end(); ?>