How to clear capabilities cache?

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I ran the following code on init:

 $author_role = get_role('author');
 $author_role->add_cap('manage_options');

That added the Settings menu at the left for a logged in Author. Then I removed the second line above and the Settings menu remains! I can reproduce this e.g. of 'list-users'. It seems WordPress is caching the capabilities. How do I clear this cache and end this frustrating behaviour?

wp_cache_flush();  

does not do anything in this case

Thanks

I ran the following code on init:

 $author_role = get_role('author');
 $author_role->add_cap('manage_options');

That added the Settings menu at the left for a logged in Author. Then I removed the second line above and the Settings menu remains! I can reproduce this e.g. of 'list-users'. It seems WordPress is caching the capabilities. How do I clear this cache and end this frustrating behaviour?

wp_cache_flush();  

does not do anything in this case

Thanks

• cache

Share Improve this question edited Sep 4, 2024 at 14:34 Justin Wylllie asked Sep 4, 2024 at 14:29 Justin WylllieJustin Wylllie 3744 bronze badges 1

• note it's list_users not list-users – Tom J Nowell ♦ Commented Sep 4, 2024 at 14:59

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1 Answer 1

Sorted by: Reset to default 2

That added the Settings menu at the left for a logged in Author.

Because the author role now has the required capabilities.

Then I removed the second line above and the Settings menu remains!

That's because role data is stored in dedicated tables the same way as user meta and posts. It's not like post type registration, it's more like post/user creation.

I can reproduce this e.g. of 'list-users'. It seems WordPress is caching the capabilities. How do I clear this cache and end this frustrating behaviour?

There is no cache, you would need to modify the role again with something like this:

$author_role = get_role('author');
$author_role->remove_cap('manage_options');

Or a CLI command such as this:

wp role reset author

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