生成使用 MapRoute 默认值的 url

发布于 2024-10-21 02:29:16 字数 946 浏览 2 评论 0原文

我定义了这些路由：

    routes.MapRoute("CategoryList_CountryLanguage", "Categories/{id}/{urlCategoryName}/{country}/{language}",
        new {
            controller = "Categories",
            action = "Details",
        });

    routes.MapRoute("CategoryList", "Categories/{id}/{urlCategoryName}",
        new {
            controller = "Categories",
            action = "Details",
            country = "US",
            language = "EN"
        });

并且我正在使用以下方式生成链接：

@Html.ActionLink("desc", "Details", "Categories", new { id = item.Id, urlCategoryName = item.UrlFriendlyName}, null)

并且生成的网址格式为： /Categories/id/friend-name

我想生成： /Categories/id/friend-name/US/EN

无需在 ActionLink 调用中指定国家/地区和语言，我不能使用这样的默认值吗？简单的解决方法是在 ActionLink 调用中指定这些参数，但我希望尽可能避免这种情况。我的希望是，第一个路由需要 url 中指定的值，而第二个路由在未包含在 url 中时具有默认值，并使用它来创建新的 url，到目前为止没有运气，这可能吗？

原文

I have these routes defined:

    routes.MapRoute("CategoryList_CountryLanguage", "Categories/{id}/{urlCategoryName}/{country}/{language}",
        new {
            controller = "Categories",
            action = "Details",
        });

    routes.MapRoute("CategoryList", "Categories/{id}/{urlCategoryName}",
        new {
            controller = "Categories",
            action = "Details",
            country = "US",
            language = "EN"
        });

and I'm generating links using:

@Html.ActionLink("desc", "Details", "Categories", new { id = item.Id, urlCategoryName = item.UrlFriendlyName}, null)

and the generated urls are in the form:
/Categories/id/friendly-name

I want to generate:
/Categories/id/friendly-name/US/EN

without having to specify the country and language in the ActionLink call, can't I use defaults like that?
The easy workaround is to specify those parameters in the ActionLink calls, but I would like to avoid that if possible. My hope is that the first route expects the values specified in the url, while the second has the defaults when not included in the url and would use that to create new urls, no luck so far, is this possible?

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烟雨凡馨 2024-10-28 02:29:16

您可以创建一个名为 UrlHelpers.cs 的帮助程序类，如下所示：

public static class URLHelpers {

        public static string CategoryList(this UrlHelper helper, int id, string urlFirendlyName) {
            return CategoryList(helper, id, urlFirendlyName, "US", "EN");
        }

        public static string CategoryList(this UrlHelper helper, int id, string urlFirendlyName, string country, string language)
        {
            return helper.Action("Details", "Categories", new { id, urlCategoryName = urlFriendlyName, country, language });
        }
}

然后在您看来，您可以这样调用它：

<a href="@Url.CategoryList(item.id, item.UrlFriendlyName)">Some Text</a>

只是注意：您需要将帮助程序的命名空间添加到页面 > 中的 web.config 中。命名空间部分。因此，如果您将 Helpers 文件夹添加到 MVC 应用程序的根目录并将 UrlHelper.cs 类放入其中，您将添加：

<pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages"/>

        <add namespace="MyProject.Helpers"/>
      </namespaces>
</pages>

You can create a helper class called UrlHelpers.cs that looks like this:

public static class URLHelpers {

        public static string CategoryList(this UrlHelper helper, int id, string urlFirendlyName) {
            return CategoryList(helper, id, urlFirendlyName, "US", "EN");
        }

        public static string CategoryList(this UrlHelper helper, int id, string urlFirendlyName, string country, string language)
        {
            return helper.Action("Details", "Categories", new { id, urlCategoryName = urlFriendlyName, country, language });
        }
}

Then in your view you would call it like this:

<a href="@Url.CategoryList(item.id, item.UrlFriendlyName)">Some Text</a>

Just a note: You will want to add the namespace of your helper to your web.config in the pages > namespaces section. So if you add a Helpers folder to the root of your MVC app and place the UrlHelper.cs class in it you would add:

<pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages"/>

        <add namespace="MyProject.Helpers"/>
      </namespaces>
</pages>

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