public IActionResult Create(PersonViewModel model)
        {
            if (ModelState.IsValid)
            {
                var grp = _repository.GetGroupsByGroupName(model.Group);

                var _person = new Person
                {
                    FirstName   = model.FirstName,
                    LastName    = model.LastName,
                    Address     = model.Address,
                    Email       = model.Email,
                    CreatedDate = DateTime.Now,
                    Group       = grp
                };
                _repository.AddEntity(_person);
                _repository.SaveAll();
                ModelState.Clear();
            }
            else
            {
            }
            return(RedirectToAction("Index"));
        }