hooks - Limiting actions only to edit.php page for specific custom post type

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Excuse me if something like this has been asked before. So, I'm trying to alter the query which displays the posts of a custom post type, but on the admin side, more precisely, the edit.php page. This is my code:

function my_function() {
    global $pagenow, $typenow;
    if( 'edit.php' == $pagenow && 'certain-post-type' === $typenow ) {
      // do something
    }
}
add_action( 'admin_init', 'my_function' );

The main problem is not altering the query itself (yet!), but targeting only the edit.php page which lists the custom-post-type posts. It works when I hook onto the admin_init hook, but I understand that admin_init runs on every admin page load, which seems a bit unnecessary. I tried limiting this to fire only on the edit.php page for the custom post type by setting the hook to add_action( 'load-edit.php', 'my_function' );, but this did nothing.

Couldn't find much documentation on the load-{$pagenow} hook, hopefully the community can steer me in the right direction and tell me what I did wrong?

本文标签： hooksLimiting actions only to editphp page for specific custom post type