asp.net-mvc-4 – MVC4自定义不显眼的验证器无法正常工作

这是页面上的代码：

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")"></script>
<script type="text/javascript">
    // we add a custom jquery validation method
    (function ($) {
        $.validator.addMethod('additive',function (value,element,params) {
        //just return false to test it.
        return false;
    });
    // and an unobtrusive adapter
    $.validator.unobtrusive.adapters.add("additive",["field2","field3","field4"],function (options) {
        var params = {
            field2: options.params.field2,field3: options.params.field3,field4: options.params.field4
        };
        options.rules['additive'] = params;
        if (options.message) {
            options.messages['additive'] = options.message;
        }
    });
}) (jQuery);
</script>

以下是与客户端相关的验证器部分(IClientValidatable)：

public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata,ControllerContext context)
        {
            ModelClientValidationRule rule = new ModelClientValidationRule
            {
                ValidationType = "additive",ErrorMessage = "ERROR MESSAGE"
            };

            rule.ValidationParameters.Add("field2",propName2);
            rule.ValidationParameters.Add("field3",propName3);
            rule.ValidationParameters.Add("field4",propName4);

            yield return rule;
        }

该模型的装饰如下：

[SumValidation("OtherField2...")]
public int MyField { get; set; }

当字段呈现时,它就是所有存在的,来自服务器端的所有内容都是data-xxx属性.只是这个特定的客户端验证不会触发.有人看到我错过了吗？