public function postMenu()
 {
     $name = Input::get('name', '');
     $desc = Input::get('desc', '');
     $parent = Input::get('parent', 0);
     $url = Input::get('url', '');
     $level = Input::get('level', 0);
     $parent_path = Input::get('parent_path', '');
     try {
         $menu = new SysMenu();
         $menu->m_name = $name;
         $menu->m_memo = $desc;
         $menu->m_parent = $parent;
         $menu->m_url = $url;
         $menu->m_path = $parent_path;
         $menu->m_level = $level;
         $menu->addMenu();
         $re = Tools::reTrue('添加菜单成功');
     } catch (Exception $e) {
         $re = Tools::reFalse($e->getCode(), '添加菜单失败:' . $e->getMessage());
     }
     return Response::json($re);
 }