c# - 使用 FluentValidation 根据 bool 值的结果设置规则

Question

我有一个类 Property，它包含以下三个属性:

bool CorrespondanceAddressIsSecurityAddress
Address CorrespondanceAddress
Address SecurityAddress

地址类只是一个基本地址类，包含有关用户地址的详细信息。

用户的通信地址将始终填写，因此需要进行验证。用户可以选择他们的通信地址与他们的安全地址相同，当这种情况发生时，不需要验证安全地址，它可以留空。

我想做的是检查 CorrespondanceAddressIsSecurityAddress bool 值的状态，然后为安全地址设置一个验证器(如果它设置为 false)，但我不确定语法需要执行此操作。

目前控制属性类验证的类包含以下两行:

RuleFor(p => p.CorrespondanceAddressIsSecurityAddress)
   .NotNull()
   .WithMessage("CorrespondanceAddressIsSecurityAddress cannot be null");
RuleFor(p => P.CorrespondanceAddressIsSecurityAddress
   .Equals(false))
   .SetValidator(new FluentAddressValidator());

然而，设置验证器的第二条规则给出了语法错误，说

Cannot convert from '...FluentAddressValidator' to 'FluentValidation.Validators.IPropertyValidator

如何根据 bool 值设置规则？

Answer 1

The When and Unless methods can be used to specify conditions that control when the rule should execute. The Unless method is simply the opposite of When

根据问题，您应该以接下来的方式编写验证器:

public class PropertyValidator : AbstractValidator<Property>
{
    public PropertyValidator()
    {
        RuleFor(x => x.CorrespondanceAddress)
            .NotNull().WithMessage("Correspondence address cannot be null")
            .SetValidator(new AddressValidator());
        RuleFor(x => x.SecurityAddress)
            .NotNull().WithMessage("Security address cannot be null")
            .SetValidator(new AddressValidator())
            .When(x => !x.CorrespondanceAddressIsSecurityAddress); // applies to all validations chain
          //.Unless(x => x.CorrespondanceAddressIsSecurityAddress); - do the same as at previous line
    }
}

If you need to specify the same condition for multiple rules then you can call the top-level When method instead of chaining the When call at the end of the rule:

When(x => !x.CorrespondanceAddressIsSecurityAddress, () => 
{
    RuleFor(x => x.SecurityAddress)
       .NotNull().WithMessage("Security address cannot be null")
       .SetValidator(new AddressValidator());
    // another RuleFor calls
});

Link to documentation