public function savemenu()
 {
     if (Session::get('logininfo')->level == 3) {
         return view('admin.error');
     }
     $menu = new menu();
     $url = trim(Input::get('url'));
     if ($url != '') {
         $url = 'pages/' . $url;
     }
     $data = array('name' => str_replace("\"", "'", trim(Input::get('name'))), 'root' => Input::get('root'), 'url' => $url);
     if ($data['root'] == -1) {
         return -1;
     }
     $menu->fill($data);
     if ($menu->save()) {
         if (Input::exists('json')) {
             $data = array('id' => $menu->id, 'name' => $menu->name, 'root' => $menu->root, 'url' => str_replace("pages/", "", $menu->url), 'created_at' => $menu->created_at, 'updated_at' => $menu->updated_at);
             return json_encode(array('result' => 1, 'message' => 'Thêm thành công menu ' . $data['name'], 'data' => $data));
         }
     } else {
         if (Input::exists('json')) {
             return json_encode(array('result' => -1, 'message' => 'Có lỗi. Vui lòng thử lại'));
         }
     }
 }