Guy wrote:
I have the following snippet of XSL to filter a book collection by category:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:param name="categor"/>
<xsl:template match="/">
<xsl:for-each select="books/book">
<xsl:if test="category=$categor">
<!-- Show info... -->
</xsl:if>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
My question: If the categor param is zero length (i.e. no filter) then how
do I test for this and allow all books through? In other words I would like
the commented code in the snippet above to be executed if the categor param
is not filled in.
Thanks!
Hi,
Specify a default value for the parameter:
<xsl:param name="categor" select="''"/>
And test for it:
<xsl:if test="$categor='' or category=$categor">
# r
--
Ronan Klyne
Business Collaborator Developer
Tel: +44 (0)870 163 2555
ronan(_dot_)klyne(_at_)groupbc(_dot_)com
www.groupbc.com
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