problem using <xsl:attribute>

arvin · July 21st, 2003, 02:31 AM

hi!

i'm quite new with XSLT. here's my problem.

xslt code:
<xsl:template match="tag">
<newtag>
<xsl:attribute name="id">
<xsl:value-of select="@attribute"/>
</xsl:attribute>
<xsl:apply-templates/>
</newtag>
</xsl:template>

source:
<tag attribute="xyz"/>
<tag/>

output:
<newtag id="xyz"/>
<newtag id=""/>

correct output:
<newtag id="xyz"/>
<newtag/>

what modification/s should i do with the xslt to get the correct output?

thanks!

joefawcett · July 21st, 2003, 03:08 AM

If you only want the attribute 'id' to appear if its value is not an empty string then you can use

Code:

<xsl:if>

or

Code:

<xsl:choose>

:

Code:

<xsl:template match="tag">
<newtag>
<xsl:if test="@attribute != ''">
<xsl:attribute name="id">
<xsl:value-of select="@attribute"/>
</xsl:attribute>
</xsl:if>
<xsl:apply-templates/>
</newtag>
</xsl:template>

Code:

<xsl:choose>

is for when you need more than two options, where in traditional languages you would use an if then else if or a switch (C/JavaScript) or select (VB) statement.

--

Joe

arvin · July 21st, 2003, 03:13 AM

thanks Joe! :)