public function news_detailAction($id)
 {
     $data['news'] = News::getById($id);
     $data['tag'] = News::getPostTag($id);
     $data['comment'] = News::get_comments($id);
     return $this->render('news/detailpage.html.twig', $data);
 }
 public function updateAction($id)
 {
     if ($this->getPostData()) {
         $news = $this->getPostData();
         $news['img'] = "img/news/" . $_FILES['image']['name'];
         $path = 'img/news/' . $_FILES['image']['name'];
         // Đường dẫn chưa file upload
         move_uploaded_file($_FILES['image']['tmp_name'], $path);
         //end img upload
         $news['slug'] = $this->app['slugify']->slugify($news['name']);
         //xoa gia tri hien tai cua bang post_tag
         News::deletePostTag($id);
         News::add_tag($id, $news['tag']);
         News::updateNews($id, $news);
         return $this->redirect('viewnews');
     }
     $data = array();
     $data['news'] = News::getById($id);
     return $this->render('admin/updatenews.html.twig', $data);
 }