public function getLikedStoriesByUser($userId)
 {
     $page = intval($this->app->request->get('page'));
     $page = $page <= 0 ? 1 : $page;
     $pageSize = intval($this->app->request->get('pageSize'));
     $pageSize = $pageSize <= 0 ? 20 : $pageSize;
     $totalStoriesCount = StoryRepository::getAllLikedStoriesCountByUser($userId);
     $currentUserId = intval($this->app->request->get('currentUser'));
     $tempRst = StoryRepository::getAllLikedStoriesByUser($currentUserId, $userId, $page, $pageSize);
     $stories = $this->assembleStoryList($tempRst);
     $this->sendResponse(array('total' => $totalStoriesCount, 'stories' => $stories));
 }