ModelState["Prop"]).Errors 中的 Fluent Validation 重复错误

Question

当我检查我的 ModelState["Email"].Errors 时，我发现相同的验证错误重复了 3 次，对于我的所有模型正好重复了 3 次，我的模型包含超过 3 个属性。

我想知道为什么规则被执行了三次。我正在使用 MVC 5，以及 Autofac。我找不到错误！没有错误，但如果每个属性都被验证 3 次，我担心性能，有些验证很复杂，有时会连接到数据库。下面是我用来注册 Validators、Fluent Validation 和 Autofac.

的代码

builder.RegisterAssemblyTypes(System.Reflection.Assembly.Load("MyAssembly"))
    .Where(t => t.Name.EndsWith("Validator"))
    .AsImplementedInterfaces()
    .InstancePerRequest();

builder.RegisterType<FluentValidationModelValidatorProvider>().As<ModelValidatorProvider>();
builder.RegisterType<AutofacValidatorFactory>().As<IValidatorFactory>().SingleInstance();

Container = builder.Build();// Build !

// FluentValidation wire up to MVC
var fluentValidationModelValidatorProvider = new fluentValidationModelValidatorProvider()
{
    AddImplicitRequiredValidator = false,
    ValidatorFactory = new AutofacValidatorFactory()
};

//fluentValidationModelValidatorProvider.AddImplicitRequiredValidator = false;

DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false;
ModelValidatorProviders.Providers.Add(fluentValidationModelValidatorProvider);

GlobalConfiguration.Configuration.DependencyResolver = new AutofacWebApiDependencyResolver(Container);

模型看起来像这样：

public class ContactInfoDTO
{
    public int ID { get; set; }
    public string Email { get; set; }
    public string Email2 { get; set; }
    public string PhoneNumber { get; set; }
    public string PhoneNumber2 { get; set; }
    public string EmergencyNumber { get; set; }
    public string EmergencyPersonName { get; set; }

    public ContactInfoDTO()
    {
    }
}

Answer 1

这是您应该如何使用 Fluent 验证：

using FluentValidation;

public class CustomerValidator: AbstractValidator<Customer> {
  public CustomerValidator() {
    RuleFor(customer => customer.Surname).NotEmpty();
    RuleFor(customer => customer.Forename).NotEmpty().WithMessage("Please specify a first name");
    RuleFor(customer => customer.Discount).NotEqual(0).When(customer => customer.HasDiscount);
    RuleFor(customer => customer.Address).Length(20, 250);
    RuleFor(customer => customer.Postcode).Must(BeAValidPostcode).WithMessage("Please specify a valid postcode");
  }

  private bool BeAValidPostcode(string postcode) {
    // custom postcode validating logic goes here
  }
}

Customer customer = new Customer();
CustomerValidator validator = new CustomerValidator();
ValidationResult results = validator.Validate(customer);

bool validationSucceeded = results.IsValid;
IList<ValidationFailure> failures = results.Errors;

你应该为你的模型创建一个验证器，这样你就可以控制当你验证你的对象时发生的事情。

Answer 2

感谢大家的支持。感谢 FluentValidation 的所有者 Jeremy Skinner 先生对其进行了调查，link 得到了以下解决方案。毕竟是我的错:)

https://github.com/JeremySkinner/FluentValidation/issues/362

ModelState["Prop"]).Errors 中的 Fluent Validation 重复错误

Fluent Validation Duplicate Errors in ModelState["Prop"]).Errors

c#

validation

asp.net-mvc

autofac

fluentvalidation