XF 2.2 What is the best way to detect when a user gets or loses a group

[R3TROATTACK]

I am currently trying to accomplish this by extending the UserGroupChange service, but either manually adding a user to the group via the edit user page does not trigger this or I am extending the wrong thing.

Spoiler: Class Extension

Spoiler: My code for the extended clas

<?php

namespace Retro\Sourcebans\Service\User;

class UserGroupChange extends XFCP_UserGroupChange
{
    public function addUserGroupChange($userId, $key, $addGroups)
    {
        $this->app->logException(new \Exception(\XF::dumpSimple([$userId.$key, $addGroups])));
        \XF::dump([$userId, $key, $addGroups]);
        return false;
    }
}

Currently im just tring to make an error occur to show me im doing the right thing lol.

Any help would be greatly appreciated!

 

[Kirby]

Most likely won't work this way, editing users in ACP doesn't use that service.

I'd use an event listener on entity_post_save for XF:User

if ($entity->isChanged('user_group_id') || $entity->isChanged('secondary_group_ids'))
{
// do smth.
}