users_group_model = UsersGroupModel()

        try:

            users_group_model.delete(id)

            h.flash(_('successfully deleted users group'), category='success')

        except Exception:

            h.flash(_('An error occurred during deletion of users group'),

                    category='error')

        return redirect(url('users_groups'))

    def delete(self, users_group_id):

        try:

            users_group = self.get(users_group_id, cache=False)

            self.sa.delete(users_group)

            self.sa.commit()

        except:

            log.error(traceback.format_exc())

            self.sa.rollback()

            raise