MVC4远程验证未接收参数值 [英] MVC4 Remote Validation Not Receiving Parameter Value

问题描述

我想实现远程验证了在视场。到目前为止的所有工作，除了在验证控制器方法的参数为null，即使该字段包含一个值。我错过了什么？

验证控制器方法

 公共JsonResult IsVanityURL_Available（字符串VanityURL）
{
    如果（！_webSiteInfoRepository.GetVanityURL（VanityURL））
        返回JSON（真，JsonRequestBehavior.AllowGet）;    字符串suggestedUID =的String.Format（CultureInfo.InvariantCulture，
        {0}不可用。VanityURL）;    的for（int i = 1; I＆LT; 100;我++）
    {
        字符串altCandidate = VanityURL + i.ToString（）;
        如果（_webSiteInfoRepository.GetVanityURL（altCandidate））继续;
        suggestedUID =的String.Format（CultureInfo.InvariantCulture，
            {0}不可尝试{1}。VanityURL，altCandidate）;
        打破;
    }
    返回JSON（suggestedUID，JsonRequestBehavior.AllowGet）;
}
 

实体属性

  [DisplayName的（个性化网址）]
[远程（IsVanityURL_Available，验证）]
[RegularEx pression（@（\\ S）+的ErrorMessage =白色空间是不允许的。）
 .VanityURL）
        ＆LT; / DIV＆GT;
        ＆LT; D​​IV CLASS =输入组利润率底小＆GT;
            ＆LT;跨度类=输入组插件＆GT;＆LT; I类=发FA-外部链接方FA-FW＆GT;＆LT; I＆GT /;＆LT; / SPAN＆GT;
            @ Html.TextBoxFor（型号=＆GT; model.SelectedContact.WebSiteInfoes [0] .VanityURL，新{@class =表格控，@placeholder =输入个性化网址}）
        ＆LT; / DIV＆GT;
    ＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
 

更新
在后一式两份的答案确实解决问题。

解决方案

我发现的另一种方法，以避免更改jquery.validate.js文件。这涉及到像这样在视图中设置TextBoxFor的名字......

  @ Html.TextBoxFor（型号=＆GT; model.SelectedContact.WebSiteInfoes [0] .VanityURL，新{@class =表格控，@placeholder =输入个性化网址@名称=VanityUrl}）
 

我恢复了我的js文件的改变，然后添加视图名称属性和模型遥控AdditionalFields定义的组合，它的工作就好了。

这变化造成了一些不可预见的问题，以及。我终于没有得到解决。我改变了得到一个POST，抓起我从FormsCollection所需的值。这<一个href=\"http://crea8ive$c$c.net/weblog/index.php/remote-validation-in-mvc3-simple-way-to-pass-the-form-value-from-custom-view-model-to-controller-via-remote-attribute/\"相对=nofollow>链接让我去在正确的方向。这让我完全绕过复杂的数据对象命名问题

I'm trying to implement Remote Validation for a field in a view. Everything so far is working except the parameter in the validation controller method is null even though the field contains a value. What did I miss?

Validation Controller Method

public JsonResult IsVanityURL_Available(string VanityURL)
{
    if (!_webSiteInfoRepository.GetVanityURL(VanityURL))
        return Json(true, JsonRequestBehavior.AllowGet);

    string suggestedUID = String.Format(CultureInfo.InvariantCulture,
        "{0} is not available.", VanityURL);

    for (int i = 1; i < 100; i++)
    {
        string altCandidate = VanityURL + i.ToString();
        if (_webSiteInfoRepository.GetVanityURL(altCandidate)) continue;
        suggestedUID = String.Format(CultureInfo.InvariantCulture,
            "{0} is not available. Try {1}.", VanityURL, altCandidate);
        break;
    }
    return Json(suggestedUID, JsonRequestBehavior.AllowGet);
}

Entity Property

[DisplayName("Vanity URL")]
[Remote("IsVanityURL_Available", "Validation")]
[RegularExpression(@"(\S)+", ErrorMessage = "White space is not allowed.")]
[Editable(true)]               
public string VanityURL { get; set; }

View

<div class="row">
    <div class="form-group col-md-12">
        <div class="editor-label">
            @Html.LabelFor(model => model.SelectedContact.WebSiteInfoes[0].VanityURL)
        </div>
        <div class="input-group margin-bottom-small">
            <span class="input-group-addon"><i class="fa fa-external-link-square fa-fw"></i></span>
            @Html.TextBoxFor(model => model.SelectedContact.WebSiteInfoes[0].VanityURL, new { @class = "form-control", @placeholder = "Enter Vanity URL" })
        </div>
    </div>
</div>

UPDATE The answer in the duplicate post does fix the problem.

解决方案

I found an alternate way to avoid changing the jquery.validate.js file. This involved setting the name of the TextBoxFor in the view like so...

@Html.TextBoxFor(model => model.SelectedContact.WebSiteInfoes[0].VanityURL, new { @class = "form-control", @placeholder = "Enter Vanity URL", @Name="VanityUrl })

I reverted my js file change, then added a combination of the view name attribute and the model remote AdditionalFields definition and it worked just fine.

This change caused some unforeseen problems as well. I finally did get a solution. I changed the GET to a POST and grabbed the values I needed from the FormsCollection. This link got me going in the right direction. This allowed me to completely bypass the Complex Data Object naming problem

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