自定义 Ajax 帮助程序未命中 MVC 中的控制器

Custom Ajax helper does not hit the controller in MVC

我找到了一个很好的 exemple of Ajax 搜索文本框助手,它看起来像这样:

public static MvcHtmlString Textbox(this AjaxHelper ajaxHelper, string name, 
    AjaxOptions ajaxOptions, object htmlAttributes)
{
    var tag = new TagBuilder("input");
    tag.MergeAttribute("name", name);
    tag.MergeAttribute("type", "text");

    tag.MergeAttributes(HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
    tag.MergeAttributes((ajaxOptions ?? new AjaxOptions()).ToUnobtrusiveHtmlAttributes());

    return MvcHtmlString.Create(tag.ToString(TagRenderMode.Normal));
}

从这个例子开始,我正在尝试定制 "AjaxButton",直到现在我有了这个助手:

public static MvcHtmlString AjaxButton(this AjaxHelper ajaxHelper, int jobId, bool apply)
{
    var myAjaxOptions = new AjaxOptions()
    {
        Url = "JobCardView/UserApply"+jobId,
        HttpMethod = "post",
        InsertionMode = InsertionMode.Replace,
        UpdateTargetId = "userInfo",
        OnSuccess = "CallBackCardView"
    };

    var tag = new TagBuilder("button");

    var color = apply ? "warning" : "primary";

    tag.MergeAttribute("class", "btn btn-"+color);
    tag.MergeAttribute("data-dismiss", "modal");

    var text = apply ? "Not Interested" : "Interested";

    tag.SetInnerText(text);


    tag.MergeAttributes((myAjaxOptions).ToUnobtrusiveHtmlAttributes());

    return MvcHtmlString.Create(tag.ToString(TagRenderMode.Normal));
}

呈现以下 Html:

    <button 
class="btn btn-warning" 
data-ajax="true" 
data-ajax-method="post" 
data-ajax-mode="replace" 
data-ajax-success="CallBackCardView" 
data-ajax-update="#userInfo" 
data-ajax-url="JobCardView/UserApply2" 
data-dismiss="modal">
Not Interested
</button>

如何在这个助手中提供 Url,以便 运行 如预期的那样?

我有 Ajax.ActionLink,它具有相同的选项并且 运行 没问题。

而不是对 url 进行硬编码(并且忘记在 jobId 参数前面附加 /):

Url = "JobCardView/UserApply"+jobId

尝试使用框架内置的工具来处理 urls (UrlHelper):

Url = new UrlHelper(ajaxHelper.ViewContext.RequestContext).Action("UserApply", "JobCardView", jobId)

这样你就能得到正确的 url:

data-ajax-url="JobCardView/UserApply/2"