jquery – ASP.NET MVC 4 – 客户端验证不工作

我使用Visual Studio 2012,我无法获得客户端逻辑的自定义属性
为了更小规模地再现,我创建了一个新的MVC 4项目,我创建了以下模型,并且将永远不会验证的属性

public class MyModel
{
    public int Id { get; set; }
    [required]
    public string LastName { get; set; }
    [NeverValid(ErrorMessage="Serverside Will Never Validate")]
    public string FirstName { get; set; }
}

public class NeverValidAttribute : ValidationAttribute,IClientValidatable
{
    public override bool IsValid(object value)
    {
        return false;
    }

    protected override ValidationResult IsValid(object value,ValidationContext validationContext)
    {
        return new ValidationResult(this.ErrorMessage,new[] { validationContext.MemberName });
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata Metadata,ControllerContext context)
    {
        yield return new ModelClientValidationRule
        {
            ErrorMessage = this.ErrorMessage,ValidationType = "nevervalid"
        };
    }
}

然后我将以下操作添加到HomeController中

public ActionResult Index()
{
    return View(new MyModel());
}

[HttpPost]
public ActionResult Index(MyModel model)
{
    if (!ModelState.IsValid)
    {
        // Will Always Be Invalid
    }

    return View(model);
}

还有一个名为nevervalid.js的javascript文件

$(function () {
    $.validator.addMethod("nevervalid",function () {
        return false;
    },"Clientside Should Not Postback");

    $.validator.unobtrusive.adapters.addBool("nevervalid");
});

和索引视图

@model CustomAttribute.Models.MyModel

@{
    ViewBag.Title = "Home Page";
}

@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>MyModel</legend>

        @Html.HiddenFor(model => model.Id)

        <div class="editor-label">
            @Html.LabelFor(model => model.LastName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.LastName)
            @Html.ValidationMessageFor(model => model.LastName)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.FirstName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.FirstName)
            @Html.ValidationMessageFor(model => model.FirstName)
        </div>

        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
}

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
    @Scripts.Render("~/Scripts/nevervalid.js")
}

我的web.config中的相关区域看起来像这样

<appSettings>
    <add key="webpages:Version" value="2.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="PreserveLoginUrl" value="true" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
</appSettings>

当页面加载时,将加载以下文件(从Chrome的F12上的网络选项卡获取)

http://localhost:7440/
http://localhost:7440/Content/site.css
http://localhost:7440/Scripts/modernizr-2.5.3.js
http://localhost:7440/Scripts/jquery-1.7.1.js
http://localhost:7440/Scripts/jquery.unobtrusive-ajax.js
http://localhost:7440/Scripts/jquery.validate.js
http://localhost:7440/Scripts/jquery.validate.unobtrusive.js
http://localhost:7440/Scripts/nevervalid.js

我的自定义属性将相关的数据添加到名字输入中,如此…

<input class="text-Box single-line valid" data-val="true" data-val-nevervalid="Serverside Will Never Validate" id="FirstName" name="FirstName" type="text" value="">

所以,我问你为什么哦,为什么这个东西必须回发做服务器端验证,而我有一些完美的JavaScript代码在这里？在某处山顶上的月亮夜晚,我要牺牲一些动物吗？

(function($) {
    $.validator.addMethod("nevervalid","Clientside Should Not Postback");

    $.validator.unobtrusive.adapters.addBool("nevervalid");
})(jQuery);