public async Task <IActionResult> RegisterChatGroup(RegisterChatGroupViewModel model)
        {
            if (ModelState.IsValid)
            {
                ChatGroup chatGroup = new ChatGroup
                {
                    ChatGroupName = model.ChatGroupName
                };

                var result = await repository.AddChatGroup(chatGroup);

                if (result)
                {
                    TempData["success"] = String.Format("Chat gruppen: '{0}' ble opprettet", model.ChatGroupName);
                    return(RedirectToAction("RegisterChatGroup"));
                }
            }
            // Something went wrong, show form again
            TempData["error"] = "Feil under oppretting av char gruppe.";
            return(View(model));
        }