public ValidationRule <Order> RuleOrderMarkedAsShippedMustHaveAShippedDate()
=>
ValidationRule.NewRule <Order>()
.OnlyCheckIf(order => order.OrderStatus == OrderStatuses.Shipped)
.ValidIf(order => order.ShipDateTime.HasValue)
.SetErrorMessage("Order is marked as shipped, but has no Ship Date/Time specified")
.AddInvalidMember(order => order.ShipDateTime);
public ValidationRule <Order> RuleOrderCannotHaveAShippedDateLaterThanDatePlaced()
=>
ValidationRule.NewRule <Order>()
.OnlyCheckIf(order => order.ShipDateTime.HasValue)
.ValidIf(order => order.ShipDateTime.Value >= order.OrderDateTime)
.SetErrorMessage(order => $"Order has a Ship Date/Time of {order.ShipDateTime.Value} which is earlier than the Date/Time it was placed of { order.OrderDateTime }")
.AddInvalidMember(order => order.OrderDateTime)
.AddInvalidMember(order => order.ShipDateTime);
public ValidationRule <Order> RuleCustomersCannotHaveMoreThanFiveOrdersAMonth()
=>
ValidationRule.NewRule <Order>()
.OnlyCheckIf(order => !order.OrderId.HasValue)
.ValidIf(order =>
{
var orders = _orderRepository.GetOrdersForCustomerForMonth(order.CustomerId, order.OrderDateTime);
return(orders.Count() < 5);
})
.SetErrorMessage("Customers can only place 5 orders a month.");
public ValidationRule <Order> RuleOrderCannotHaveDuplicateConfirmationNumber()
=>
ValidationRule.NewRule <Order>()
.OnlyCheckIf(order => !string.IsNullOrWhiteSpace(order.ConfirmationNumber))
.ValidIf(order =>
{
var orders = _orderRepository.GetOrdersByConfirmationNumber(order.ConfirmationNumber).Where(o => o.OrderId != order.OrderId);
return(!orders.Any());
})
.StopProcessingMoreRulesIfValidationFails()
.SetErrorMessage(order => $"The confirmation number '{order.ConfirmationNumber}' is already in use.")
.AddInvalidMember(order => order.ConfirmationNumber);
public ValidationRule <Order> RuleOrderPlacedDateTimeMustBeInThePast()
=>
ValidationRule.NewRule <Order>()
.ValidIf(order => DateTime.Now >= order.OrderDateTime)
.SetErrorMessage(order => $"Order has an invalid Date/Time of {order.OrderDateTime}")
.AddInvalidMember(order => order.OrderDateTime);