Hello folks,

I'm new at both XSLT and Umbraco, and I'm liking both so far. I am creating a macro to generate a listing of articles, by category, that are on the website. I created an article document type and added a checkbox list data type for the article author to check off the appropriate categories, no problem.  I was originally going to build an asp.net user control to generate the listing, but I found a snippet of XSLT somewhere on this forum (can't find it now) which does nearly what I need to do. I tweaked it a bit, and it works spendidly. My problem is that in my document type I created a checkbox list to mark the category of the article, and multiple categories can be selected, which messes things up.

What I want is this, where "strawberry" is about both "Fruit" and "Red" categories:

Fruit

• blueberry
• strawberry

Red

• strawberry

What I currently get from the XSLT is this:

Fruit

• blueberry

Fruit, Red

• strawberry

Can this be done with xslt?

This is what I'm working with now, and it would work swimmingly if it weren't for the multiple values:

<?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:param name="currentPage"/>

    <!-- Input the documenttype you want here -->
    <xsl:variable name="documentTypeAlias" select="string('HVACRArticle')"/>
    <xsl:variable name="groupByAlias" select="string('ArticleType')"/>
    <xsl:variable name="listArticleTitle" select="string('ArticleTitle')"/>
    <xsl:variable name="data" select="umbraco.library:GetXmlAll()/descendant-or-self::node [@nodeTypeAlias = $documentTypeAlias and string(data [@alias='umbracoNaviHide']) != '1']"/>
    <xsl:key name="nodes-by-category" match="node" use="string(data [@alias='ArticleType'])"/>
    <!-- unfortuantely xsl:key does not accept variables so we have to repeat our field here -->

    <xsl:template match="/">

        <!-- by category -->
        <xsl:for-each select="$data[count(. | key('nodes-by-category', string(data [@alias=$groupByAlias]))[1]) = 1]">
            <xsl:sort select="string(data [@alias=$groupByAlias])" />
    

            <h3>
                <xsl:value-of select="data [@alias=$groupByAlias]" />
            </h3>

            <div style="margin-bottom: 20px;">
                <div class="itm">
                    <xsl:for-each select="key('nodes-by-category', string(data [@alias=$groupByAlias]))">
                        <xsl:sort select="@nodeName" />

                        <div class="title">
                           <a>
             <xsl:attribute name="href">
        <xsl:value-of select="umbraco.library:NiceUrl(@id)"/>
              </xsl:attribute>
        <xsl:value-of select="data [@alias=$listArticleTitle]" /></a>
                        </div>
                        </xsl:for-each>
                </div>
            </div>
        </xsl:for-each>
    </xsl:template>

</xsl:stylesheet>