I have used Pjax in the main.php file to load all views via Ajax, but the GridView filter is no longer working.
<?php Pjax::begin(['id'=>'maincontent','linkSelector'=>'#menuLink']) ?>
<div class="content-wrapper">
<!-- Main content -->
<?= Alert::widget() ?>
<div id="maincontent" class="content">
<?= $content ?>
</div>
<!-- /.content -->
</div>
<?php Pjax::end() ?>