/**
  *
  * 首頁 最新消息
  */
 public static function news_index()
 {
     try {
         $key = 'news_index';
         $data = Cache::get($key);
         if (!$data) {
             $data = Article::ofCategory('3')->open()->orderBy('open_at', 'DESC')->take(10)->get();
             Cache::put($key, $data, 2);
         }
         return $data;
     } catch (Exception $e) {
     }
 }