在MvcSiteMapProvider中为具有动态参数的DynamicNode创建子节点

时间:2010-11-09 19:51:45

标签: c# asp.net asp.net-mvc asp.net-mvc-2 mvcsitemapprovider

我正在使用MvcSiteMapProvider 2.2.1(http://mvcsitemap.codeplex.com),当这些子节点具有动态参数(id)时,在动态节点(使用dynamicNodeProvider)下创建子节点时遇到问题。

我正在丢失以下路线的面包屑:

店铺/ 5 /产品/编辑/ 23

网址格式为:

店铺/ {STOREID} / {控制器} / {行动} / {ID}

当ID被省略时(即“新”动作),它可以正常工作。但是当指定ID时,它与路径不匹配,并且我的面包屑(使用SiteMapPath帮助程序)是空白的。

我的站点地图:(已删除)

<?xml version="1.0" encoding="utf-8" ?>
<mvcSiteMap xmlns="http://mvcsitemap.codeplex.com/schemas/MvcSiteMap-File-2.0">
    <mvcSiteMapNode title="Home" controller="Dashboard" action="Index" changeFrequency="Always" updatePriority="Normal">
        <mvcSiteMapNode title="My Account" controller="Account" action="Index" key="Account" />
        <mvcSiteMapNode title="My Stores" area="Stores" controller="Home" action="Index" visibilityProvider="ControlPanel.Areas.Stores.StoreAreaVisibilityProvider, ControlPanel"  >
            <mvcSiteMapNode title="Store" action="Index" dynamicNodeProvider="ControlPanel.Areas.Stores.StoreAreaNodeProvider, ControlPanel" />
        </mvcSiteMapNode>
    </mvcSiteMapNode>
</mvcSiteMap>

区域注册

public override void RegisterArea(AreaRegistrationContext context)
{
        context.MapRoute(
            "Store_Index",
            "Stores",
            new { action = "Index", controller = "Home" },
            new string[] { "ControlPanel.Areas.Stores.Controllers" }
            );

        context.MapRoute(
            "Store_default",
            "Stores/{storeID}/{controller}/{action}/{id}",
            new { action = "Index", controller = "Manage", id = UrlParameter.Optional },
            new { storeID = @"\d+" },
            new string[] { "ControlPanel.Areas.Stores.Controllers" }
        );
    }

首次尝试:

我尝试的第一件事是在sitemap xml中创建子节点作为动态节点的子节点。这根本不起作用,最终成为“家”的孩子。我会在其中放置一个ParentKey属性,除了这些属性将在每个商店重复,因此会有多个父键

<?xml version="1.0" encoding="utf-8" ?>
<mvcSiteMap xmlns="http://mvcsitemap.codeplex.com/schemas/MvcSiteMap-File-2.0">
  <mvcSiteMapNode title="Home" controller="Dashboard" action="Index" changeFrequency="Always" updatePriority="Normal">
    <mvcSiteMapNode title="My Account" controller="Account" action="Index" key="Account" />
    <mvcSiteMapNode title="My Stores" area="Stores" controller="Home" action="Index" visibilityProvider="ControlPanel.Areas.Stores.StoreAreaVisibilityProvider, ControlPanel"  >
      <mvcSiteMapNode title="Store" action="Index" dynamicNodeProvider="ControlPanel.Areas.Stores.StoreAreaNodeProvider, ControlPanel">
        <mvcSiteMapNode title="Products" area="Stores" controller="Products" action="Index">
          <mvcSiteMapNode title="Edit" area="Stores" controller="Products" action="Edit"/>
          <mvcSiteMapNode title="New" area="Stores" controller="Products" action="Edit"/>
        </mvcSiteMapNode>
      </mvcSiteMapNode>
    </mvcSiteMapNode>
  </mvcSiteMapNode>
</mvcSiteMap>

第二次尝试:

下一个选项似乎只是在我的DynamicNodeProvider中添加子节点。除了具有动态参数的节点

之外,这种方法效果更好

(为便于说明,以下内容进行了修改)

public class StoreAreaNodeProvider : IDynamicNodeProvider
{
    public IEnumerable<DynamicNode> GetDynamicNodeCollection()
    {
        var nodes = new List<DynamicNode>();

        foreach (var store in repo.GetStores())
        {
            DynamicNode node = new DynamicNode();
            node.Title = store.Name;
            node.Area = "Stores";
            node.Controller = "Manage";
            node.Action = "Index";
            node.RouteValues.Add("storeID", store.StoreID);
            node.Key = "Store_" + store.StoreID.ToString();

            nodes.Add(node);

            //Child of node
            DynamicNode productsNode = new DynamicNode();
            productsNode.Title = "Products";
            productsNode.Area = "Stores";
            productsNode.Controller = "Products";
            productsNode.Action = "Index";
            productsNode.RouteValues.Add("storeID", store.StoreID);
            productsNode.ParentKey = String.Format("Store_{0}", store.StoreID.ToString());
            productsNode.Key = String.Format("Store_{0}_Products", store.StoreID.ToString());

            nodes.Add(productsNode);

            //child of productsNode
            DynamicNode editNode = new DynamicNode();
            editNode.Title = "Edit";
            editNode.Area = "Stores";
            editNode.Action = "Edit";
            editNode.Controller = "Products";
            editNode.RouteValues.Add("storeID", store.StoreID);
            //I can't add the RouteValue "ID" here because it is dynamic
            //I would have do loop through every product for this store with
            //another dynamic node provider, but that seems terribly inefficient and stupid
            editNode.ParentKey = String.Format("Store_{0}_Products", store.StoreID.ToString());
            editNode.Attributes.Add("visibility", "SiteMapPathHelper,!*");

            nodes.Add(editNode);
        }

        return nodes;
    }
}

摘要

工作:商店/ 5 /产品/新
不起作用:商店/ 5 /产品/编辑/ 23
对于网址格式:商店/ {storeID} / {controller} / {action} / {id}

我希望能做什么:

editNode.Attributes.Add("isDynamic", "true");
editNode.Attributes.Add("dynamicParameters", "id");

如何在作为dynamicNode子节点的节点上模仿旧的MvcSiteMapProvider的dynamicParameters属性?基本上我需要它在匹配路由时忽略“id”路由值。

希望我能正确地解释,并没有用信息压倒你。谢谢!


更新

根据Jakub的回答,这个解决方案对我有用。

在MvcSiteMapProvider 2.x中,您可以自己实现ISiteMapNodeUrlResolver,而不必修改源代码。所以我基本上补充了能够拥有dynamicParameters属性

类别:

namespace ControlPanel
{
    public class CustomSiteMapNodeUrlResolver : ISiteMapNodeUrlResolver
    {
        public virtual string ResolveUrl(MvcSiteMapNode mvcSiteMapNode, string area, string controller, string action, IDictionary<string, object> routeValues)
        {
            RequestContext ctx;
            if (HttpContext.Current.Handler is MvcHandler)
                ctx = ((MvcHandler)HttpContext.Current.Handler).RequestContext;
            else
                ctx = new RequestContext(new HttpContextWrapper(HttpContext.Current), new RouteData());

            //Begin Added Code
            if (mvcSiteMapNode["dynamicParameters"] != null)
            {
                foreach (var item in mvcSiteMapNode["dynamicParameters"].Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
                {
                    var dp = item.Trim();
                    routeValues[da] = ctx.RouteData.Values[dp];
                }
            }
            //End Added Code

            return new UrlHelper(ctx).Action(action, controller, new RouteValueDictionary(routeValues));
        }
    }
}

的Web.config:

<siteMap defaultProvider="MvcSiteMapProvider" enabled="true">
  <providers>
    <clear/>
    <add name="MvcSiteMapProvider"
         type="MvcSiteMapProvider.DefaultSiteMapProvider, MvcSiteMapProvider"
         siteMapFile="~/Mvc.Sitemap"
         securityTrimmingEnabled="true"
         attributesToIgnore="visibility,dynamicParameters"
         scanAssembliesForSiteMapNodes="true" 
         siteMapNodeUrlResolver="ControlPanel.CustomSiteMapNodeUrlResolver, ControlPanel"
         siteMapNodeVisibilityProvider="MvcSiteMapProvider.FilteredSiteMapNodeVisibilityProvider, MvcSiteMapProvider" />
  </providers>
</siteMap>

动态节点提供商:

DynamicNode node = new DynamicNode();
node.Attributes.Add("dynamicParameters", "id");

1 个答案:

答案 0 :(得分:8)

我使用的是1.x版。 我有动态参数的类似问题。

我不得不修改源代码 - 在MvcSiteMapNode.cs中进行了更改。这是Url属性的新实现

    public override string Url
    {
        get
        {
            if (!string.IsNullOrEmpty(this.url))
                return this.url;

            RequestContext ctx;
            if (HttpContext.Current.Handler is MvcHandler)
                ctx = ((MvcHandler)HttpContext.Current.Handler).RequestContext;
            else
                ctx = new RequestContext(new HttpContextWrapper(HttpContext.Current), new RouteData());

            var routeValues = new RouteValueDictionary(RouteValues);

            foreach (var key in DynamicParameters)
                routeValues.Add(key, ctx.RouteData.Values[key]);

            return new UrlHelper(ctx).Action(Action, Controller, routeValues);
        }
        set
        {
            this.url = value;
        }
    }

注意如何将dynamicParameters的实际值添加到routeValues集合中。

上述更改允许我在站点地图中定义动态paremteres(例如'id')并使用Account / User / Edit / 23等链接创建面包屑。

我简要介绍了2.x版本,您应该可以应用类似的补丁。 希望它会帮助你...