Asp.net MVC 3 DataAnnotations条件验证 [英] Asp.net MVC 3 Conditional validation with DataAnnotations

问题描述

我正在使用Asp.net MVC 3，具有dataannotations面临的问题，验证如下

I are using Asp.net MVC 3, facing validation problem with dataannotations as below

我们一直保持着模型，模型类层次结构就像是在

We have maintained model in separate library project, model class hierarchy is like Below

public class EditAlternateMailingAddressModel : BaseModel
{
    public UserAddressDetails AlternateAddressDetails { get; set; }

    public List<UsState> StateList { get; set; }        
}

现在userAddressDetails定义像下面

now userAddressDetails is defined like below

 public partial class UserAddressDetails 
    {  
      public string DeliveryLine { get; set; }
      public string Zip { get; set; }
      public bool IsDefaultMailingAddress { get; set; }        
    }

验证逻辑在不同的类中定义象下面

validation logic are defined in separate class like below

[MetadataType(typeof(UserAddressDetailsMetaData))]
public partial class UserAddressDetails
{
    private class UserAddressDetailsMetaData
   {

      [Required(ErrorMessage = "Please enter address.")]
       public string DeliveryLine { get; set; }

       [Required(ErrorMessage = "Please enter city.")]
      public string City { get; set; }
        public bool IsDefaultMailingAddress { get; set; 
}

在编辑视图， DeliveryLine，邮编​​依赖于IsDefaultMailingAddress因为这些字段必须要是IsDefaultMailingAddress是真实的提供，否则我们将提交表单。

打开和部分提交，我们使用jQuery的表格。

for opening and partially submitting the forms we are using jQuery.

我们已经尝试以下
<一href=\"http://andrewtwest.com/2011/01/10/conditional-validation-with-data-annotations-in-asp-net-mvc/\" rel=\"nofollow\">http://andrewtwest.com/2011/01/10/conditional-validation-with-data-annotations-in-asp-net-mvc/
的http://blogs.msdn.com/b/simonince/archive/2010/06/04/conditional-validation-in-mvc.aspx

但这些验证被触发服务器端，我们需要使它在客户端工作。

but these validation are fired server side, we need to make it work on client side.

推荐答案

您应该创建你自己定制的ValidationAttribute。如果你想客户端验证，你的属性应该实现IClientValidatable接口，你应该写定制的客户端验证。

You should create you own custom ValidationAttribute. If you want client validation, your attribute should implement IClientValidatable interface, and you should write custom client side validator.

更新：加code样品

实施验证：

public class CustomRequiredAttribute : ValidationAttribute, IClientValidatable
{
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        // your validation logic here
        return ValidationResult.Success;
    } 

    public override IEnumerable<ModelClientValidationRule> GetClientValidationRules()
    {
        return new[] {new CustomRequiredValidationRule (ErrorMessage)};
    }
}

public class CustomRequiredValidationRule : ModelClientValidationRule
{
    public RequiredIfVisibleValidationRule(string errorMessage)
    {
        ValidationType = "customRequire";
        ErrorMessage = errorMessage;
    }
}

添加客户端验证：

(function ($) {
    $.validator.addMethod('customRequire', function (value, element) {
        // your validation logic here
        return true; // true if valid, otherwise false 
    });
    $.validator.unobtrusive.adapters.add('customRequire');
})(jQuery);

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