Re: Parametrized xsl:sort

On Thursday 29 August 2002 21:03, Neale Morison wrote:
> Thanks. I thought I might be able to do it without an eval, but the eval
> method does work. Regards,
> Neale

The only other way to do it is to have a preset list of possible sort keys, 
and use <xsl:choose>.  It's not as useful, but it will work without the 
extension.

        <xsl:call-template name="petTable">
                <xsl:with-param name="selection" 
select="pet[@species='dog']"/>
                <!-- use quotes around '@name' -->
                <xsl:with-param name="sortkey" select="'@name'"/>
                <xsl:with-param name="sortorder" select="'descending'"/>
        </xsl:call-template>

        <xsl:template name="petTable">
                <xsl:param name="selection" select="*"/>
                <xsl:param name="sortkey" select="''"/>
                <xsl:param name="sortorder" select="''"/>
                ...
                <xsl:choose>
                   <xsl:when test="$sortkey = '@name'">
                     <xsl:apply-templates select="$selection">
                        <!-- just a question, did you mean to parameterize the
                             sort order as well? -->
                        <xsl:sort select="@name" order="descending"/>
                     </xsl:apply-templates>
                   </xsl:when>
                   <xsl:when test="$sortkey = 'something else'">
                      <!-- copy the same apply-templates here, changing @name
                           as appropriate -->
                   </xsl:when>
                </xsl:choose>
        ..>
        </xsl:template>


-- 
Peter Davis

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