News::getCategoryName PHP Method

    public function getCategoryName()
    {
        return $this->category === null ? '---' : $this->category->name;
    }

 public function browse_cat($cat_id)
 {
     $this->_checkPermission();
     $params = func_get_args();
     $this->path = join('/', $params);
     // make sure there's a / at the end
     if (substr($this->path, -1, 1) != '/') {
         $this->path .= '/';
     }
     //security
     // we dont allow back link
     if (strpos($this->path, '..') !== false) {
         if (Plugin::isEnabled('statistics_api')) {
             $user = null;
             if (AuthUser::isLoggedIn()) {
                 $user = AuthUser::getUserName();
             }
             $ip = isset($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];
             $event = array('event_type' => 'hack_attempt', 'description' => __('A possible hack attempt was detected.'), 'ipaddress' => $ip, 'username' => $user);
             Observer::notify('stats_file_manager_hack_attempt', $event);
         }
     }
     $this->fullpath = FILES_DIR . '/themes/news/images/';
     // clean up nicely
     $this->fullpath = preg_replace('/\\/\\//', '/', $this->fullpath);
     $news_arr = News::findByCatId($cat_id);
     $category_name = News::getCategoryName($cat_id);
     $this->display('news/view_news', array('dir' => $this->path, 'files' => $this->_getListFiles(), 'news_arr' => $news_arr, 'category_name' => $category_name, 'cat_id' => $cat_id));
 }