App\Transformers\BeatmapsetDiscussionTransformer::includeUsers PHP Method

    public function includeUsers(BeatmapsetDiscussion $discussion)
    {
        $userIds = [$discussion->beatmapset->user_id];
        foreach ($discussion->beatmapDiscussions as $beatmapDiscussion) {
            if (!priv_check('BeatmapDiscussionShow', $beatmapDiscussion)->can()) {
                continue;
            }
            $userIds[] = $beatmapDiscussion->user_id;
            foreach ($beatmapDiscussion->beatmapDiscussionPosts as $post) {
                if (!priv_check('BeatmapDiscussionPostShow', $post)->can()) {
                    continue;
                }
                $userIds[] = $post->user_id;
                $userIds[] = $post->last_editor_id;
                $userIds[] = $post->deleted_by;
            }
        }
        $userIds = array_unique($userIds);
        $users = User::whereIn('user_id', $userIds)->get();
        return $this->collection($users, new UserCompactTransformer());
    }