public function role_add($model, RM_User_Services $service, $request, $params)
 {
     if ($this->mv_handler->validateForm("rm_user_role_add_form")) {
         if (isset($request->req['rm_role_name']) && $request->req['rm_display_name'] && $request->req['rm_user_capability']) {
             if (!$service->create_role($request->req['rm_role_name'], $request->req['rm_display_name'], $request->req['rm_user_capability'])) {
                 //Role add was not success
             }
         }
     } else {
         // Edit for request
         if (isset($request->req['role_id'])) {
             $model->load_from_db($request->req['role_id']);
         }
     }
     $this->role_manage($model, $service, $request, $params);
 }