On a sidenote, you could do with some methods in the Access class as well, as both static methods in the library class use those Access class for access control checking (that is, if you're using this in code, if using xslt, you'll have to use the functions as mentioned in prevous post)

Cheers,

/Dirk

Thanks Dirk,

I had looked at the

public static bool HasAccess(int NodeId, string Path) {}

But that has been deprecated. I found out that you should instead use the

public static bool HasAccess(int documentId, object memberId) {}

I have tried to write this method that just one level down finds the allowed nodes. It seems to work. But for some reason my membership provider has stopped working in my development environment after I upgraded it to the latest Umbraco verision. Will start another thread on that if I can't figure it out

 
       //Instantiate the xmlwriter
            StringBuilder sb = new StringBuilder();
            XmlWriter xw = XmlWriter.Create(sb);
            xw.WriteStartDocument();
            xw.WriteStartElement("root");
 
            //Get the current member
            Member m = Member.GetCurrentMember(); 
 
            //Get all childnodes to the current
            Nodes childNodes = Node.GetCurrent().Children;
 
            //Loop throug child nodes
            foreach (Node n in childNodes)
            {
                //Assume that there is no access to begin with
                bool hasAccess = false;
 
                if (!Access.IsProtected(n.Id, n.Path) || Access.GetProtectionType(n.Id) == ProtectionType.NotProtected)
                {
                    hasAccess = true;
                }
                else if (m!=null)
                {
                    hasAccess = Access.HasAccces(n.Id, m.UniqueId);
                }
 
                //write xml
                if (hasAccess)
                {
                    xw.WriteStartElement("node");
                    xw.WriteAttributeString("name", n.Name);
                    xw.WriteAttributeString("url", n.NiceUrl);
                    xw.WriteEndElement();
                }
            }
 
            //close up xml
            xw.WriteEndElement(); //root
            xw.WriteEndDocument();
            xw.Flush();
            xw.Close();
 
            navXml.Text = sb.ToString();

When I get it to work as I wan't I thought I would make a package out of it, for others to use. Never done that before, and would like to figure out how to do that.

/rasb

PS: How do you insert code like you have done? I just copied from your message to get this.

OK! Got it to work, and thought I'd share it here... until I figure out how to share it on the Wiki... please let me know if did all of this for no reason at all because there is a much easier way in Xslt to it.

I created a UserControl that did the trick for me. Here is the code for the user control.

RoleBasedNavigation.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="RoleBasedNavigation.ascx.cs" Inherits="RoleBasedNavigation.RoleBasedNavigation" %>
<asp:Literal ID="renderedNavXml" runat="server"></asp:Literal>

RoleBasedNavigation.ascx.cs

using System;
using System.Web;
using umbraco.presentation.nodeFactory;
using umbraco.cms.businesslogic.web;
using System.Xml;
using System.Text;
using System.Web.Security;
using System.Xml.Xsl;

namespace RoleBasedNavigation
{
    public partial class RoleBasedNavigation : System.Web.UI.UserControl
    {
        private string _XsltFile;
        private int _Depth = 1;
        private MembershipUser CurrentUser;
        private XmlWriter xw;

        protected void Page_Load(object sender, EventArgs e)
        {
            //get currentuser
            CurrentUser = Membership.GetUser();

            //Instantiate the xmlwriter
            StringBuilder sb = new StringBuilder();
            xw = XmlWriter.Create(sb);
            xw.WriteStartDocument();
            xw.WriteStartElement("root");

            //Iterate through all the nodes, starting with the current node
            IterateNodes(Node.GetCurrent(), 1);

            //close up xml
            xw.WriteEndElement(); //root
            xw.WriteEndDocument();
            xw.Flush();
            xw.Close();

            //Create a DOM object based on the Xml string created
            System.Xml.XmlDocument doc = new XmlDocument();
            doc.LoadXml(sb.ToString());

            //Then render the xml using the Xslt provided
            XslCompiledTransform xslt = umbraco.macro.getXslt(XsltFile);
            renderedNavXml.Text = umbraco.macro.GetXsltTransformResult(doc, xslt);
        }

        private void IterateNodes(Node currentNode, int level)
        {
            //Get all childnodes to the current
            Nodes childNodes = currentNode.Children;

            //Loop throug child nodes
            foreach (Node n in childNodes)
            {
                //Assume that there is no access to begin with
                bool hasAccess = false;

                if (!Access.IsProtected(n.Id, n.Path) || Access.GetProtectionType(n.Id) == ProtectionType.NotProtected)
                {
                    hasAccess = true;
                }
                else if (CurrentUser != null)
                {
                    hasAccess = Access.HasAccces(n.Id, CurrentUser.ProviderUserKey);
                }

                //write xml
                if (hasAccess)
                {
                    xw.WriteStartElement("node");
                    xw.WriteAttributeString("nodeName", n.Name);
                    xw.WriteAttributeString("niceUrl", n.NiceUrl);
                    xw.WriteAttributeString("id", n.Id.ToString());

                    //Let's call this method recursively untill the whole tree has been created
                    if (Depth == 0 || Depth > level)
                        IterateNodes(n, level + 1);

                    xw.WriteEndElement();
                }
            }
        }

        /// <summary>
        /// XsltFile used to render navigation UI.
        /// </summary>
        public string XsltFile { get { return _XsltFile; } set { _XsltFile = value; } }

        /// <summary>
        /// Indicates the depth the iterator will traverse the tree. 
        /// Depth of 0 (zero) will allow the iterator to go as deep as it can.
        /// Default depth is 1 (one).
        /// </summary>
        public int Depth { get { return _Depth; } set { _Depth = value; } }
    }
}

There are two properties on the UserControl.

        public string XsltFile { get { return _XsltFile; } set { _XsltFile = value; } }

This is the name of the Xslt file used for rendering the layout of the navigation menu. Create the Xslt file under the Developer section and use the Filename of the Xsltfile for this property.

        public int Depth { get { return _Depth; } set { _Depth = value; } }

The depth of the tree can be set her. If set to 0 (zero), then the tree will just go as deep as it can. Otherwise it will go to the depth indicated here.

To test, use this Xslt document.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>
<xsl:stylesheet 
    version="1.0" 
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
    xmlns:msxml="urn:schemas-microsoft-com:xslt" 
    xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets" 
    exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">


<xsl:output method="xml" omit-xml-declaration="yes" />

<xsl:template match="/">

<!-- The fun starts here -->
<ul>
    <xsl:apply-templates select="root/node"/>
</ul>

</xsl:template>

<xsl:template match="node">
    <li>
        <a href="{umbraco.library:NiceUrl(@id)}">
            <xsl:value-of select="@nodeName"/>
        </a>
        <xsl:if test="count(./node)&gt;0">
            <ul>
                <xsl:apply-templates select="./node"/>
            </ul>
        </xsl:if>
    </li>
</xsl:template>

</xsl:stylesheet>

Comments are very welcome! 

All the best,
Rasb

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