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I am having little difficulty in assigning a counter variable and incrementing it and then checking for a certain value in XSLT. Here is my code:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" <xsl:variable name="empty_string"/>
<xsl:variable name="counter" select="0"/>
<xsl:template match="/Collection">
<xsl:for-each select="Content">
<xsl:sort select="Html/root/Event/start_date" order="ascending"/>
<xsl:variable name="isFutureEvent">
<xsl:value-of select="syscom:isFutureDate(Html/root/Event/start_date)" />
</xsl:variable>
<xsl:if test="Html/root/Event != $empty_string">
<xsl:if test="$isFutureEvent='true'">
<!-- Increment Counter -->
<xsl:value-of select="$counter + 1"/>
<!-- Test if Counter < 4 -->
<xsl:if test="$counter < 3">
<div class="media">
<!-- Do stuff here -->
</div>
</xsl:if> <!-- End if for counter -->
</xsl:if>
</xsl:if>
<!--</xsl:when>-->
<!--</xsl:choose>-->
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
But it doesnt seem to increment my counter and not exiting when the counter hits 3. Any help on this ?
522
'Variables' in XSL are actually constants - you cannot change their value. This:
<xsl:value-of select="$counter + 1"/>
will just output the value of $counter+1
To do loops you have to use recursion - e.g.:
<xsl:stylesheet
version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template name="loop">
<xsl:param name="i"/>
<xsl:param name="limit"/>
<xsl:if test="$i <= $limit">
<div>
<xsl:value-of select="$i"/>
</div>
<xsl:call-template name="loop">
<xsl:with-param name="i" select="$i+1"/>
<xsl:with-param name="limit" select="$limit"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
<xsl:template match="/">
<html>
<body>
<xsl:call-template name="loop">
<xsl:with-param name="i" select="0"/>
<xsl:with-param name="limit" select="10"/>
</xsl:call-template>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
altough it is better to try to avoid loops - in most cases the XSL can be written to avoid it, but I don't understand enough of what are you trying to achieve to give you the complete solution.
138
I have same problem. I need increment value in loop. So the simplest way was include Saxon and use that value.
if you use Saxon 6.5.5
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
...
xmlns:saxon="http://icl.com/saxon"
extension-element-prefixes="saxon"
version="3.0">
if you use Saxon 9.4.0.4
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
...
xmlns:saxon="http://saxon.sf.net/"
extension-element-prefixes="saxon"
version="3.0">
And after that you can simply use saxon variable :
<xsl:variable name="counter" select="0" saxon:assignable="yes"/> <!-- declare value -->
<saxon:assign name="counter" select="$counter+1"/> <!-- increment value, you can do it in loop for example-->
<xsl:value-of select="$counter"></xsl:value-of> <!-- print value -->
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