How to properly update grid using pjax Yii2?

Question

Yii

There is a standard grid.

<?php \yii\widgets\Pjax::begin(['id' => 'course_grid']); ?>
    <?= GridView::widget([
    ...
    ]); ?>
 <?php \yii\widgets\Pjax::end(); ?>

The grid should change depending on the selected select option. The same filter, just not inside the grid.
On yii, the first one would do it through an ajax request and replace the grid through renderPartial.
$.pjax.reload({container:'#course_grid'}); - updates my grid, but the point of this update is if I can't pass any data.

Answer 1

So? demos.krajee.com/grid-demo