public IActionResult Delete(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            var department      = _departmantService.GetById((int)id);
            var departmentCount = _personalService.GetAllByDepartmentId((int)id).Count;

            if (department == null)
            {
                return(NotFound());
            }

            if (departmentCount >= 1)
            {
                return(RedirectToAction("Index", "Departmans"));
            }

            _departmantService.Delete((int)id);
            return(RedirectToAction("Index", "Departmans"));
        }