验证嵌套模型

Question

我现在有一个视图模型设置为这样：

public class OurViewModel 
    { 
     public OurViewModel() { } 

     [Required] 
     public int LeadID { get; set; } 
     [Required] 
     public int Rate { get; set; } 
     [Required] 
     public bool DepositRequired { get; set; } 
     [RequiredIfOtherPropertyIsTrue("DepositRequired")] 
     public BankInfo { get; set; } 
    } 

......在这种情况下，“RequiredIfOtherPropertyIsTrue”是，确实差不多就是它说一个验证：检查是否另一个属性是真（在这种情况下，我们的布尔指示是否需要押金），和BankInfo是另一种模式，看起来是这样的：现在

public class BankInfo 
{ 
    public enum AccountTypeEnum 
    { 
     CHECKING, 
     SAVINGS 
    } 

    public BankAccountInfo() { } 

    [DisplayName("Account Number")] 
    [Required(ErrorMessage = "You must provide a valid bank account number")] 
    public String AccountNumber { get; set; } 

    [DisplayName("Bank Routing Number")] 
    [Required(ErrorMessage = "You must provide a valid routing number")] 
    [StringLength(9, MinimumLength = 9, ErrorMessage = "Your bank routing number must be exactly 9 digits")] 
    public String ABANumber { get; set; } 

    [DisplayName("Bank Account Type")] 
    [Required] 
    public AccountTypeEnum AccountType { get; set; } 

    [DisplayName("Name on Bank Account")] 
    [Required(ErrorMessage = "You must provide the name on your bank account")] 
    public String AccountName { get; set; } 
} 

，在我们的视图模型，我们必将对我国DepositRequired复选框布尔型和一个EditorForW/BankInfo的自定义模板。提交后，我们无法弄清楚如何禁用模型所要求的BankInfo验证（例如，即使我们不需要ViewModel上的属性，它仍然在BankInfo上触发val并因此失败悲惨地在任何形式的职位上）。有没有任何标准的方式来处理ViewModel绑定w/nested模型验证？

Answer 1

不幸的是，内置的验证，你必须使用

ModelState.Remove("BankInfo"); 

有条件地忽略对象的任何验证失败。

如果使用FluentValidation是一个选项，你可以做这样的事情在你的OurViewModelValidator：

RuleFor(ourViewModel=> ourViewModel.BankInfo).SetValidator(new BankInfoValidator()).When(ourViewModel=> ourViewModel.DepositRequired); 

，然后让该对象的BankInfoValidator处理验证。

喜欢的东西：

public class BankInfoValidator : AbstractValidator<BankInfo> 
{ 
    public BankAccountInfoValidator() 
    { 
     RuleFor(bank => bank.AccountName).NotEmpty().WithMessage("You must provide a name for your bank account."); 
     RuleFor(bank => bank.AccountNumber).NotEmpty().WithMessage("You must provide an account number for your bank information."); 
     RuleFor(bank => bank.AccountType).NotEmpty().WithMessage("You must select what kind of bank account you're entering information for (checking, savings)."); 
     RuleFor(bank => bank.ABANumber).NotEmpty().WithMessage("You must provide a routing number for your bank information."); 
     RuleFor(bank => bank.ABANumber).Must(BeOnlyDigits).WithMessage("Your routing number can only contain numeric characters, 0-9."); 
     RuleFor(bank => bank.AccountNumber).Must(BeOnlyDigits).WithMessage("Your account number can only contain numeric characters, 0-9."); 
    } 

    private bool BeOnlyDigits(string digitString) 
    { 
     int result; 
     return int.TryParse(digitString, out result); 
    }