假设您有一个viewModel: public class CreatePersonViewModel{ [Required] public bool HasDeliveryAddress {get;set;} // Should only be validated when HasDeliveryAddress is true [RequiredIf("HasDeliveryAddress", true)] public Address Addr
public class CreatePersonViewModel
{
[Required]
public bool HasDeliveryAddress {get;set;}
// Should only be validated when HasDeliveryAddress is true
[RequiredIf("HasDeliveryAddress", true)]
public Address Address { get; set; }
}
模型地址将如下所示:
public class Address : IValidatableObject
{
[Required]
public string City { get; set; }
[Required]
public string HouseNr { get; set; }
[Required]
public string CountryCode { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string LastName { get; set; }
[Required]
public string ZipCode { get; set; }
[Required]
public string Street { get; set; }
#region IValidatableObject Members
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
string[] requiredFields;
var results = new List<ValidationResult>();
// some custom validations here (I removed them to keep it simple)
return results;
}
#endregion
}
有些人会建议为Address创建一个viewmodel并在那里添加一些自定义逻辑,但我需要一个Address实例传递给我的EditorTemplate for Address.
这里的主要问题是Address的验证是在我的PersonViewModel验证之前完成的,所以我无法阻止它.
注意:RequiredIfAttribute是一个自定义属性,它可以完成我想要的简单类型.
如果您使用 FluentValidation.NET而不是DataAnnotations或IValidatableObject,在复杂的情况下会严重限制验证功能,那本来就是小菜一碟:public class CreatePersonViewModelValidator : AbstractValidator<CreatePersonViewModel>
{
public CreatePersonViewModelValidator()
{
RuleFor(x => x.Address)
.SetValidator(new AddressValidator())
.When(x => x.HasDeliveryAddress);
}
}
