dynamic query string in XSL not working

[csbdeady]

Hi

I have successfully passed in the variable sortorder from my PHP program to an XSL stylesheet.

However I cannot display it within the following:

<xsl:stylesheet version = '1.0'
xmlns:xsl='[URL unfurl="true"]http://www.w3.org/1999/XSL/Transform'>[/URL]

<xsl:output method="html" indent="yes"/>

<xsl:param name="sortorder" />
 
<xsl:template match="events">
 <table border="0">
<a href="showevents.html?sortorder={sortorder}">
  <xsl:apply-templates>
  <xsl:sort order="$sortorder" select="concat(substring(startdate, 7,2),substring(startdate, 4,2),substring(startdate, 1,2))" data-type="numeric" /> 
  </xsl:apply-templates>
 </table>
</xsl:template>

<xsl:template match="event">
 <tr>
  <td><a href="showevents.php?eventID={@eventID}"><em class="sm"><xsl:value-of select="name" /></em></a></td><td><em class="gr"><xsl:value-of select="startdate" /></em></td>
 </tr>
</xsl:template>

</xsl:stylesheet>

I've tried using:
{sortorder}
{@sortorder}

and had a go with:

<xsl:template match="sorting">
  <A HREF="showevents.php?sortorder={sortorder}">
    <em class="sm">[recent 1st]</em>
  </A></xsl:template>

but no luck.

I'm sure this must be straightforward. I would like the HREF to be ouput as HTML thus:

<a href="showevents.php?sortorder=1">

 

[SMAirlines]

Unfortunately, I don't think you can use parameters for sort order. I haven't had any luck getting them to work. What I have done to achieve this is actually create 2 separate xsl files, and call the appropriate one depending on the querystring. A little bit clunky, but it works.

Hope this helps.

 

[jel]

You can use parameters for the sort-order as well as the sort-field, even if you cannot do use parameters in the order-attribute itself. Just a little trick:

<xsl:param name="sortorder" />
<xsl:param name="sortfield" />

<xsl:template match="list">
  <xsl:choose>
    <xsl:when test="$sortorder='desc'">
      <xsl:call-template name="sortedlistdesc" />
    </xsl:when>
    <xsl:otherwise>
      <xsl:call-template name="sortedlistasc" />
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template name="sortedlistdesc">
  <xsl:for-each select="*">
    <xsl:sort select="*[name()=$sortfield]" order="descending" />
    <xsl:apply-templates select="." />
  </xsl:for-each>
</xsl:template>

<xsl:template name="sortedlistasc">
  <xsl:for-each select="*">
    <xsl:sort select="*[name()=$sortfield]" order="ascending" />
    <xsl:apply-templates select="." />
  </xsl:for-each>
</xsl:template>

<xsl:template match="listitem">
   ...
</xsl:template>