public IActionResult Index(int?businessID) { if (businessID == null || !businessID.HasValue) { return(NotFound()); } _tableManager.UpdateTablesAvailability(businessID.Value); var indexVM = new TableIndexViewModel { Business = _businessManager.GetBusiness(businessID.Value), Tables = _tableManager.GetTables(businessID.Value) }; return(View(indexVM)); }