使用从属属性的自定义客户端数据注释

Question

我有一个动态调用局部视图的视图。

模型对象示例：

public class ParentModel
{
public int id {get; set;}
public List<ChildModel> childModel {get;set;}
}

    public class ChildModel
    {
   [NameRequired("eligibility","coupon","activeId")]
    public string name {get; set;}
    public string eligibility{get; set;}
    public string coupon {get; set;}
    public int activeId {get; set;}
    }

查看示例：

ParentView.cshtml

- 使用父模型

@usng(Html.BeginForm())
{
-- additionalFields
<div id="addNewRow">
</div>
<input type="button" value "Add Row">
}

ChildView.cshtml

- 使用childModel

@using(Html.BeginCollectionItem())
{
--additional fields
}

我在点击按钮时使用jquery动态地将childView添加为addNewRow div的部分视图。

- 附加代码：

public class NameRequiredAttribute : ValidationAttribute, IClientValidatable
    {
 public NameRequiredAttribute (string eligibility,string coupon,string activeId)
            : base(DefaultErrorMessage)
         {
            this.eligibility = eligibility;
this.coupon = coupon;
activeId = activeId;

        }

 protected override ValidationResult IsValid(object value, ValidationContext validationContext)
         {
// server side validation code
}

public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {





            var rule = new ModelClientValidationRule()
            {
                ValidationType = "namerequired",
                ErrorMessage = DefaultErrorMessage,
            };

            rule.ValidationParameters.Add("eligibility",BuildDependentPropertyId(metadata, context as ViewContext,this.eligibility));
            rule.ValidationParameters.Add("coupon", BuildDependentPropertyId(metadata, context as ViewContext,this.coupon));
             rule.ValidationParameters.Add("activeid", BuildDependentPropertyId(metadata, context as ViewContext,this.activeId));


            yield return rule;

        }
        private string BuildDependentPropertyId(ModelMetadata metadata, ViewContext viewContext,string propertyName)
         {
            // build the ID of the property
            string depProp = viewContext.ViewData.TemplateInfo.GetFullHtmlFieldId(propertyName);
            // unfortunately this will have the name of the current field appended to the beginning,
             // because the TemplateInfo's context has had this fieldname appended to it. Instead, we
            // want to get the context as though it was one level higher (i.e. outside the current property,
            // which is the containing object (our Person), and hence the same level as the dependent property.
             var thisField = metadata.PropertyName + "_";
            if (depProp.StartsWith(thisField))
                // strip it off again
                depProp = depProp.Substring(thisField.Length);
             return depProp;
        }
}

Jquery:

$.validator.addMethod(
     'namerequired',
     function (value, element, params) {
         var eligibility = params.eligibility;
         var coupon = params.coupon;
          var eligibility = params.eligibility;
         var isin = params.isin;
         var endingBal = params.endingbal;
         var copoun = params.copoun;
         var maturityDate = params.maturitydate;


         var dependentElement = $('#' + eligibility);

         var type = $(dependentElement).attr("type"),
             actualVal = $(dependentElement).val();
         alert(actualVal); // This is returning as undefined
      });

 $.validator.unobtrusive.adapters.add(
     'namequired', ['eligibility', 'coupon', 'eligibility', 'activeid'], function (options) {
         var params = {
              trancheName: options.params.eligibility,
             coupon: options.params.coupon,
             activeid: options.params.activeid,


         };
         options.rules['namerequired'] = params;
          options.messages['namerequired'] = options.message;
     });

我的问题如下：

我需要在客户端将自定义数据注释添加到childModel＆＃34; name＆＃34;使用以下条件的财产：

仅当在任何一个或所有资格，优惠券，activeId UI字段中输入数据时，才为该特定名称行启用必填字段（这应该重复所有动态添加的行）

此致

Answer 1

您可能需要条件数据注释验证。您可以查看此blog post