Check for duplicate secret parameter

[alex-code]

If pjax receives data as an array you can end up with duplicate secret parameters _pjax=#container

Can occur with a filter on a GridView.

[cebe]

can you explain a bit more how and why this can happen? and shouldn't we fix the cause then rather then working around it?

[alex-code]

Say you have a GridView with a filter wrapped with PJax.

When you change the GridView filter Pjax catches the form submit and appends _pjax to the querystring.

Now in your action where you render the GridView it sets the filterUrl to Yii::$app->request->url which now includes the _pjax param.

If you change the filter again the applyFilter function in yii.gridView.js parses the querystring in filterUrl when building the hidden form.

Pjax then serializes that form into an array and adds the _pjax parameter again.

[SilverFire]

Reproduced. The fix works fine

[SilverFire]

I think it's better to solve this problem on js side than touch PHP part of Yii

[SilverFire]

Merged 18a9183

[SilverFire]

Thank you!