App\Models\Forum\Topic::scopeWatchedByUser PHP Method

    public function scopeWatchedByUser($query, $user)
    {
        return $query->with('forum')->whereIn('topic_id', model_pluck(TopicWatch::where('user_id', $user->user_id), 'topic_id'))->orderBy('topic_last_post_time', 'DESC');
    }