yii2 pjax gridview issue - caching

Question

I am using gridview with pjax in yii2 advanced. When i add/update/delete any record the pjax loads the very first html of page. For example, i have 10 records after deleting a record there should be 9 records, but it still loads 10 records and this continues even if you have deleted all the records. Same goes for add and update as well.
But if i hit F5 then it loads the actual records fetched from the database table and if i do any of the actions again then it again shows 10 records.
Here is the Gridview code with Pjax
$this->registerJs("$('.js-delete').on('click', function(e) {
ajax_actions(this, true, {
'pjax_container': '#products-grid'
});
return false;
});");
Pjax::begin([
"id" => "products-grid",
"enablePushState" => false
]);
echo GridView::widget([
'dataProvider' => $dataProvider,
"summary" => '',
"rowOptions" => function($model) {
if($model->status == Common::STATUS_INACTIVE)
{
return ["class" => "inactive"];
}
},
'columns' => [
[
"class" => 'yii\grid\SerialColumn',
"headerOptions" => [
"class" => 'hidden-480'
],
"contentOptions" => [
"class" => 'hidden-480'
]
], [
"attribute" => "title",
"label" => "Product"
], [
"attribute" => "companies_id",
"label" => "Companies",
"value" => "companies.title"
], [
"attribute" => "product_types_id",
"header" => "Category",
"value" => "productTypes.title"
], [
"attribute" => "part_number",
"header" => "<span class=\"hidden-360\">Part </span>Number"
], [
"attribute" => "created_on",
"label" => "Added On",
"format" => ["date", "php:" . Common::DATETIME_FORMAT_DISPLAY],
"headerOptions" => [
"class" => 'textRight hidden-360'
],
"contentOptions" => [
"class" => 'textRight hidden-360'
]
], [
"class" => 'yii\grid\ActionColumn',
"header" => "Actions",
"headerOptions" => [
"class" => "textRight actions"
],
"contentOptions" => [
"class" => "textRight actions"
],
"template" => "{view} {edit} {delete}",
"buttons" => [
'view' => function($url, $model) {
return Html::a('<i class="' . Common::ICON_VIEW . '"></i> <span class="hidden-640">View</span>', ['view', 'token' => $model->token], ["class" => "call-ajax"]);
},
'edit' => function($url, $model) {
return Html::a('<i class="' . Common::ICON_EDIT . '"></i> <span class="hidden-640">Edit</span>', ['update', 'token' => $model->token], ["class" => "call-ajax"]);
},
'delete' => function($url, $model) {
return Html::a('<i class="' . Common::ICON_DELETE . '"></i> <span class="hidden-640">Delete</span>', ['delete', 'token' => $model->token], [
'class' => 'js-delete'
]);
}
]
]
]
]);
Pjax::end();
functions
function ajax_submit(element, pjax_container)
{
var form = $(element);
if(form.find('.has-error').length) return false;
$.post(form.attr('action'),form.serialize()).done(function(result){
var result = JSON.parse(result);
if(result.type=='error')
{
result.container = '.error-container';
messages(result)
}
else
{
if(pjax_container) $.pjax.reload({container: pjax_container});
$('.overlay').click();
result.container = '.message-container';
messages(result);
}
});
return false;
}
function ajax_actions(element, ask_me, params)
{
if(ask_me == true && ask() == false)
{
return false;
}
var $this = $(element);
var $params = {
callBacks: {
beforeSendAfter: function() {},
completeAfter: function() {}
}
};
if(params != undefined) $.extend(true, $params, params);
$.ajax({
type: 'POST',
url: $this.attr("href"),
cache: false,
beforeSend: function() {
if($params.callBacks.beforeSendAfter != undefined && $.isFunction($params.callBacks.beforeSendAfter)) $params.callBacks.beforeSendAfter();
},
success: function(response) {},
complete: function(response) {
var result = $.parseJSON(JSON.parse(response.responseText));
if(result.type=='error')
{
result.container = '.error-container';
messages(result)
}
else
{
result.container = '.message-container';
$('.overlay').click();
$.pjax.reload({container: $params.pjax_container});
messages(result);
}
if($params.callBacks.completeAfter != undefined && $.isFunction($params.callBacks.completeAfter)) $params.callBacks.completeAfter();
}
})
return false;
}