App\Http\Controllers\API\ChatController::privateMessages PHP Метод

    public function privateMessages()
    {
        $since = intval(Request::input('since'));
        $limit = min(50, intval(Request::input('limit', 50)));
        $messages = PrivateMessage::toOrFrom(Auth::user()->user_id)->with('sender')->with('receiver');
        if ($since) {
            $messages = $messages->where('message_id', '>', $since);
        }
        $collection = json_collection($messages->orderBy('message_id', $since ? 'asc' : 'desc')->limit($limit)->get(), new PrivateMessageTransformer());
        return $since ? $collection : array_reverse($collection);
    }