Add filter in dynamic_sidebar() to modify sidebar index

[andrewryno]

Use case: changing sidebars depending on the page/post/etc loaded through a plugin. Nothing too complex, just no way to do it. There is a filter dynamic_sidebar_params but that isn't called until later on in the function after the widgets have been collected for that sidebar.

[c3mdigital]

Currently I believe this is possible. Look at the widget_display_callback filter. You could conditionally add __return_false to the filter to remove all widgets then add your replacements using the dynamic_sidebar action hook.

Please reopen if you feel the discussion should continue.

[markoheijnen]

Clearing out the milestones for closed tickets on Awaiting Review

[SergeyBiryukov]

Duplicate of #33915.