public ActionResult GroupInsert(GroupsOfEmployeeModel model)
        {
            ViewBag.Departmanlar = _serviceDepartments.GetAll().Select(x => new SelectListItem { Text = x.Name, Value = x.Id.ToString() }).ToList();
            if (ModelState.IsValid)
            {
                _serviceGroupsOfEmployee.Insert(model.ModelToEnity(true));
            }

            return RedirectToAction("GroupList");
        }