XSLT - nested loop

Question

Hi

I'm having trouble with an XSLT to loop through all the rows, and then all the columns in each row element.

So if this is the XML I have:

<root>
<subelement>
<rows>
<row title="Row1">
  <column title="A" />
  <column title="B" />
</row>
<row title="Row2">
  <column title="C" />
  <column title="D" />
</row>
</rows>
</subelement>
</root>

I would like output like this:

<h1>Row1</h1>
<ul>
  <li>A</li>
  <li>B</li>
</ul>
<h1>Row2</h1>
<ul>
  <li>C</li>
  <li>D</li>
</ul>

Regards

Peter

Answer 1

This transformation:

<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt;
    <xsl:output omit-xml-declaration="yes" indent="yes"/>
    <xsl:strip-space elements="*"/>

 <xsl:template match="row">
     <h1><xsl:value-of select="@title"/></h1>
     <ul>
       <xsl:apply-templates/>
     </ul>
 </xsl:template>

 <xsl:template match="column">
   <li><xsl:value-of select="@title"/></li>
 </xsl:template>
</xsl:stylesheet>

when applied on the provided XML document:

<root>
    <subelement>
        <rows>
            <row title="Row1">
                <column title="A" />
                <column title="B" />
            </row>
            <row title="Row2">
                <column title="C" />
                <column title="D" />
            </row>
        </rows>
    </subelement>
</root>

produces the wanted output:

<h1>Row1</h1>
<ul>
   <li>A</li>
   <li>B</li>
</ul>
<h1>Row2</h1>
<ul>
   <li>C</li>
   <li>D</li>
</ul>

Answer 2

This is a book I can recommend to learn XSLT:

XSLT: Programmer's Reference, 2nd Edition, Michael Kay

Also, this website is very handy, it even has an online XSLT tester: http://www.w3schools.com/xsl/default.asp