public IActionResult Edit(int?id)
{
var model = id != null
? new EditPersonnelViewModel(_service.GetPersonnelItem(id.Value))
: new EditPersonnelViewModel();
model.Roles = _service.GetRoleItems().Select(a => new SelectListItem(a.RoleName, a.Id.ToString()));
model.Titles = _service.GetTitleItems().Select(a => new SelectListItem(a.TitleName, a.Id.ToString()));
return(View(model));
}