Question

我正在编写一个自定义MVC验证属性，该属性依赖于模型中的另一个命名属性。实现IClientValidatable我的代码如下所示：

public IEnumerable<ModelClientValidationRule> GetClientValidationRules
    (ModelMetadata metadata, ControllerContext context)
    {            
        var name = metadata.DisplayName ?? metadata.PropertyName;
        ModelClientValidationRule rule = new ModelClientValidationRule()
        { ErrorMessage = FormatErrorMessage(name), ValidationType = "mycustomvalidation" };
        rule.ValidationParameters.Add("dependentproperty", dependentProperty);

        yield return rule;
    }

麻烦的是我试图在元素列表中使用它。依赖属性在视图中呈现，名称为MyListOfObjects[0].DependentProperty，验证规则呈现为data-val-mycustomvalidation-dependentproperty="DependentProperty"

如何从GetClientValidationRules(ModelMetadata metadata, ControllerContext context)中访问相关属性的全名，以便将其呈现为data-val-mycustomvalidation-dependentproperty="MyListOfObjects[0].DependentProperty"

该模型如下所示：

public class MyClass
{
    public string SomeValue { get; set; }
    public List<Item> MyListOfObjects  { get; set; }

    public class Item
    {
        [MyCustomValidation("DependentProperty")]
        public int MyValidatedElement  { get; set; }

        public int DependentProperty  { get; set; }

    }
}

Answer 1

您在验证属性中不需要完全限定的属性名称，并且在任何情况下都无法确定它，因为验证上下文是（在您的情况下）typeof Item（该属性没有上下文的属性）父MyClass）。

您确实需要全名在客户端脚本中（将adapter添加到$.validator.unobtrusive时。以下脚本将返回依赖属性的id属性< / p>

myValidationNamespace = {
  getDependantProperyID: function (validationElement, dependantProperty) {
    if (document.getElementById(dependantProperty)) {
      return dependantProperty;
    }
    var name = validationElement.name;
    var index = name.lastIndexOf(".") + 1;
    dependantProperty = (name.substr(0, index) + dependantProperty).replace(/[\.\[\]]/g, "_");
    if (document.getElementById(dependantProperty)) {
        return dependantProperty;
    }
    return null;
  }
}

然后，您可以在初始化客户端验证时使用它

$.validator.unobtrusive.adapters.add("mycustomvalidation", ["dependentproperty"], function (options) {
  var element = options.element;
  var dependentproperty = options.params.dependentproperty;
  dependentproperty = myValidationNamespace.getDependantProperyID(element, dependentproperty);
  options.rules['mycustomvalidation'] = {
    dependentproperty: dependentproperty
  };
  options.messages['mycustomvalidation'] = options.message;
});

获取对象列表的MVC客户端验证的完整属性名称

1 个答案: