Security Menu API with MU-plugin

I have a regular plugin working fine with the new Security menu API, but I’d much prefer if I could get it to work from an mu-plugin.

The problem I’m having is getting the API to look for the $menu_slug in the mu-plugins folder. The documentation says that the $menu_slug should be:

The slug name to refer to this menu by; must match an active plugin or mu-plugin slug.

So there must be a way to do this. So what is it, please?


Aha! After looking at the add_security_page code in plugin.php, I finally have it working. The trick is to include the .php suffix at the end of the mu-plugin, and which you omit when the file is part of a regular plugin.


Code snippet would nice for future reference here


OK! My mu-plugin is in a file called whitelist-blacklist.php, so this is the code I used:

function kts_whitelist_blacklist() {
    if ( function_exists( '\add_security_page' ) ) {
        $page_title = 'Whitelist Blacklist';
	$menu_title = 'Whitelist Blacklist';
	$menu_slug = 'whitelist-blacklist.php';
	$function = 'kts_whitelist_blacklist_setup';

	add_security_page( $page_title, $menu_title, $menu_slug, $function );
    else {
        // existing code       
add_action( 'admin_menu', 'kts_whitelist_blacklist' );