public function save()
 {
     $params = Input::all();
     $check = $this->_check($params);
     if (!empty($check)) {
         $this->_fail($check);
     }
     $id = $params['id'];
     unset($params['id']);
     if (empty($params['pwd'])) {
         unset($params['pwd']);
     } else {
         $params['pwd'] = md5(md5($params['pwd']));
     }
     unset($params['currentpwd']);
     unset($params['confirmpwd']);
     try {
         AdminORM::edit($id, $params);
         $this->_succ('保存成功', $this->is_super_admin ? URL::route('adminLists') : URL::route('userLists'));
     } catch (Exception $e) {
         $this->_fail('保存失败');
     }
 }