public ActionResult Create(Role role)
 {
     if (ModelState.IsValid) {
         roleRepository.InsertOrUpdate(role);
         roleRepository.Save();
         return RedirectToAction("Index");
     } else {
         return View();
     }
 }
 public void InsertOrUpdate(Role role)
 {
     // Roles are different as there is only one column (primary key). Therefore there is really only insert
     // without messing up all of the relationships.
     context.Roles.Add(role);
 }