从局部视角看剃刀截面夹杂物

Evg*_*vin 2 asp.net-mvc razor asp.net-mvc-3

我在_Layout.cshtml中有脚本部分:

<html>
    <body>
    ...
        @RenderSection("FooterScript", required: false)
    </body>
</html>
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我查看包含的"Index.cshtml" @Html.RenderPartial("LinksBlock", someModel).LinksBlock部分需要脚本文件"links.js".我想从我的局部视图中将links.js包含到FooterScript中,而不是从主视图(主视图不知道部分视图的依赖关系),我想确定,如果我在我的中使用多个LinksBlock查看,只包含1个links.js.可能吗?

Dar*_*rov 14

部分不适用于部分视图.但是你可以编写一对可以结合使用的自定义助手:

public static class HtmlExtensions
{
    public static IHtmlString RegisteredScripts(this HtmlHelper htmlHelper)
    {
        var ctx = htmlHelper.ViewContext.HttpContext;
        var registeredScripts = ctx.Items["_scripts_"] as Stack<string>;
        if (registeredScripts == null || registeredScripts.Count < 1)
        {
            return null;
        }
        var sb = new StringBuilder();
        foreach (var script in registeredScripts)
        {
            var scriptBuilder = new TagBuilder("script");
            scriptBuilder.Attributes["type"] = "text/javascript";
            scriptBuilder.Attributes["src"] = script;
            sb.AppendLine(scriptBuilder.ToString(TagRenderMode.Normal));
        }
        return new HtmlString(sb.ToString());
    }

    public static void RegisterScript(this HtmlHelper htmlHelper, string script)
    {
        var ctx = htmlHelper.ViewContext.HttpContext;
        var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);
        var registeredScripts = ctx.Items["_scripts_"] as Stack<string>;
        if (registeredScripts == null)
        {
            registeredScripts = new Stack<string>();
            ctx.Items["_scripts_"] = registeredScripts;
        }
        var src = urlHelper.Content(script);
        if (!registeredScripts.Contains(src))
        {
            registeredScripts.Push(src);
        }
    }
}
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然后在你的_Layout.cshtml:

@Html.RegisteredScripts()
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在你的部分:

@{Html.RegisterScript("~/scripts/foo.js");}
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