c# - 验证未在自定义验证器中调用

Question

我将 Ninject、MVC4、AutoMapper 和 FluentValidation 结合在一起使用。

我已经为我的 View 模型编写了一个验证器，并且我已经编写了一个必须在 View 模型验证器中调用的可重用验证器。

问题是，当我发布表单时，不会在 View 模型验证器上调用 Validate 覆盖，因此也不会调用可重用验证器，所以最后 ModelResult 是有效的...(导致异常时将实体写入数据库)...

奇怪的是，当我为其中一个属性添加 RuleFor 时，表单得到了很好的验证。

public class RequiredSourceViewModelValidator : AbstractValidator<RequiredSourceViewModel>
    {
        public RequiredSourceViewModelValidator()
        {
            Mapper.CreateMap<RequiredSourceViewModel, Source>();
        }

        public override FluentValidation.Results.ValidationResult Validate(RequiredSourceViewModel requiredSourceViewModel)
        {
            var validator = new SourceValidator();

            var source = Mapper.Map<RequiredSourceViewModel, Source>(requiredSourceViewModel);

            return validator.Validate(source);
        }
    }


public class SourceValidator : AbstractValidator<Source>
    {
        public SourceValidator()
        {
            RuleFor(s => s.Name)
                .NotEmpty()
                    .WithMessage("Naam mag niet leeg zijn.")
                .Length(1, 100)
                    .WithMessage("Naam mag niet langer zijn dan 100 karakters.");

            RuleFor(s => s.Url)
                .NotEmpty()
                    .WithMessage("Url mag niet leeg zijn.")
                 .Must(BeAValidUrl)
                    .WithMessage("Url is niet geldig.")
                .Length(1, 100)
                    .WithMessage("Url mag niet langer zijn dan 100 karakters.");
        }

        private bool BeAValidUrl(string url)
        {
            if (url == null)
            {
                return true;
            }

            var regex = new Regex(@"^http(s)?://([\w-]+.)+[\w-]+(/[\w- ./?%&=])?$");
            return regex.IsMatch(url);
        }
    }

public class Source : IEntity
    {
        /// <summary>
        /// Gets or sets the primary key of the source.
        /// </summary>
        public int Id { get; set; }

        /// <summary>
        /// Gets or sets the name of the source.
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// Gets or sets the url of the source.
        /// </summary>
        public string Url { get; set; }

        /// <summary>
        /// Gets or sets the ordinal of the source.
        /// </summary>
        /// <value>
        /// The ordinal of the source.
        /// </value>
        public int Ordinal { get; set; }

        public int? GameId { get; set; }
    }

这里可能出了什么问题？

Answer 1

您正在覆盖错误的重载。您需要使用签名覆盖 Validate 方法:public virtual ValidationResult Validate(ValidationContext<T> context)因为此方法将在 MVC 验证期间被调用:

public override ValidationResult Validate(
      ValidationContext<RequiredSourceViewModel> context)
{
     var validator = new SourceValidator();

     var source = 
         Mapper.Map<RequiredSourceViewModel, Source>(context.InstanceToValidate);

     return validator.Validate(source);
 }

另一个重载仅在您手动调用验证时使用 validator.Validate(object) .