public IActionResult FindUser(InviteUserViewModel model) { var user = _hubService.FindUser(model.UserName); if (user == null) { _toastNotification.AddErrorToastMessage("Such a user does not exist."); } else { _toastNotification.AddSuccessToastMessage("Such user exist."); } return(RedirectToAction("InviteUser", "Hub", new { title = model.Title, name = model.UserName })); }