Add a filter for $index in dynamic_sidebar() function

[ShinichiN]

It would be nice if plugins can filter the index (the name of the widget area) in dynamic_sidebar() function.

While there are a lot of hooks inside this function, it is not possible to switch an area to another.

A lot of plugins try to offer WordPress users the ability to create and switch areas dynamically, but all of them (,which I found) has to offer a custom template tag to render the desired widget area. Users need to edit their files like sidebar.php.

[ShinichiN]

Adds a filter "dynamic_sidebar_index"

[azaozz]

Wondering if it will be a bit more useful if the filter is after $sidebars_widgets = wp_get_sidebars_widgets(); and then pass $sidebars_widgets as argument to it.

[ShinichiN]

Includes the set of widget areas with allocated widgets as an argument. Implement @azaozz 's comment.

[ShinichiN]

@azaozz Do we still need the other 2 arguments, $wp_registered_sidebars and $wp_registered_widgets when we have the $sidebars_widgets, which is a combination of the 2?

[DrewAPicture]

Replying to ShinichiN:

@azaozz Do we still need the other 2 arguments, $wp_registered_sidebars and $wp_registered_widgets when we have the $sidebars_widgets, which is a combination of the 2?

Yes, we still need the other two. $wp_registered_sidebars and $wp_registered_widgets are stored in memory and $sidebars_widgets is derived from the database. Fun times.

[SergeyBiryukov]

Duplicate of #33915.

@ShinichiN, could you add your patch to the other ticket? Thanks!

[ShinichiN]

@SergeyBiryukov I will.

@DrewAPicture Thank you for the clarification.