Re: dynamic construction of path based on param

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Subject: Re: dynamic construction of path based on param
From: Oleg Tkachenko <olegt@xxxxxxxxxxxxx>
Date: Wed, 22 Jan 2003 20:18:22 +0200

raven wrote:

I want to dynamically construct a path based on a
param called $course. Here is my current code:

<xsl:if test='contains($course, "510")'>
	<xsl:variable name="path" select="x510" />
</xsl:if>

<xsl:if test='contains($course, "340")'>
	<xsl:variable name="path" select="x340" />
</xsl:if>

<xsl:apply-templates select='syllabus/$path'/>

A number of mistakes: local variable's scope is its parent element, so both of your variables go out of the scope immediately. Second - variables are not macros, <xsl:variable name="path" select="x510" /> means the variable is bound to *result* of evaluation of 'x510' xpath expression. And syllabus/$path is syntax error in XPath. What you can do (but it looks a litle bit strange) is

<xsl:variable name="path">
	<xsl:if test='contains($course, "510")'>
		<xsl:value-of select="x510" />
	</xsl:if>

	<xsl:if test='contains($course, "340")'>
		<xsl:value-of select="x340" />
	</xsl:if>
</xsl:variable>

<xsl:apply-templates select='syllabus/*[local-name() = $path]'/>

But that looks like a very convolute (and namespace-buggy) version of

	<xsl:if test='contains($course, "510")'>
		<xsl:apply-templates select='syllabus/x510'/>
	</xsl:if>
	<xsl:if test='contains($course, "340")'>
		<xsl:apply-templates select='syllabus/x340'/>
	</xsl:if>

--
Oleg Tkachenko
eXperanto team
Multiconn Technologies, Israel

XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list

Current Thread
dynamic construction of path based on param raven - Wed, 22 Jan 2003 13:00:20 -0500 (EST) Oleg Tkachenko - Wed, 22 Jan 2003 13:16:01 -0500 (EST) <=

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