/**
  * 删除部门 
  */
 public function deletedepartmentAction()
 {
     $request = $this->getRequest();
     $department_id = (int) $request->getParam('department_id');
     $csrf_token = $request->getParam('csrf_token');
     if (AdminService::checkCsrfToke($csrf_token) == false) {
         return $this->showWarning('非法操作');
     }
     $admin_service = new AdminService();
     $department_info = $admin_service->getDepartmentById($department_id);
     if (empty($department_info)) {
         return $this->showWarning('对不起,部门不存在。');
     }
     $rs = $admin_service->deleteDepartment($department_id);
     if ($rs) {
         return $this->showMessage('恭喜您,删除成功。', '/system/departmentmanage');
     } else {
         return $this->showWarning('对不起,删除失败。');
     }
 }