public PartialViewResult New(List<int> userIds, int offset)
 {
     Event model = new Event();
     model.SetOffset(offset);
     userIds = userIds == null ? new List<int>() : userIds;
     userIds.Remove(CurrentUserId);
     var users = _db.Users.Where(u => userIds.Contains(u.UserId)).ToList();
     model.Users = users;
     ViewData[Constants.IsAdminKey] = CurrentUser.IsAdmin();
     return PartialView(model);
 }