Can't save a widget that uses a namespace

[pcfreak30]

I am using the following plugin to provide autoload abilities: ​http://wordpress.org/plugins/wp-autoloader/

I have created a widget that uses the namespace '\WordPress\Widgets'. I was able to use register_widget with it.

However upon adding and saving the widget, I refresh and it is not stored. Removing the namespacing and doing a manual require allows it to function as intended.

[Denis-de-Bernardy]

Possibly related:

​http://stackoverflow.com/questions/5247302/php-namespace-5-3-and-wordpress-widget#comment12854641_5247436

[jdgrimes]

Replying to Denis-de-Bernardy:

Possibly related

See #16773.

[nacin]

Sounds like a good thing to fix.

[EFAREM]

Just tested in nightly build and it seems to work fine with and without the leading slash.

[allisonplus]

Tested in trunk and cannot replicate. Widget saved fine, regardless of NameSpacing.

[ZanderZ]

I also ran into this problem today and can give more info on what's causing it.

This is my code:

<?php
register_widget(new OurNamespace\SocialWidget);

When adding this widget to a sidebar, a POST call is made to admin_ajax.php, with payload (Example)

{
"widget_id": "widget-ournamespace\socialwidget-2",
"id_base": "ournamespace\socialwidget"
}

The slash is causing the problem. When you call parent::__construct with an id_base without a slash (I used ournamespace_socialwidget), the problem is gone.

Hope that helps you! If more info is useful, feel free to ask :)

[jdgrimes]

Example namespaced widget class for testing

[jdgrimes]

Unslashes widget IDs in Ajax callbacks

[jdgrimes]

I've attached a basic namespaced widget in example-widget.php​, for testing purposes, and come up with 27770.diff​, which fixes the issue for me.

[johnbillion]

Slasheeeeeeesssssss

[johnbillion]

In 41292:

Widgets: Correctly strip slashes from widget and sidebar names to allow namespaced widgets to function correctly.

Fixes #27770

Props jdgrimes