Re: [xsl] use variable in <xsl:if test=

[Matt Gushee <mgushee@xxxxxxxxxxxxx>]

On Sat, Mar 02, 2002 at 12:21:29AM +0100, Robert Sösemann wrote:
> How in the world ;-) can i use a variable in <xsl:if  test=..>
> 
> <xsl:variable name="condition" select="*[.//author='C. J. Date']"/>
> 
>   <xsl:template match="node()[name()=$entity]">
>  <xsl:if test="boolean(string($condition))">

There is nothing syntactically wrong with this. It would help if
you explained what result you are expecting.

> This does not work neigther with
> {$condition}

It shouldn't. You can't use attribute value templates in <xsl:if test="">.
You just put the variable reference in the attribute value, as in your
example. And it's okay to use the variable as an argument to a function,
and to nest functions.

Maybe you just have the wrong idea about what your XPath expression
is doing. In particular, I can't see a reason why you would need to
use both boolean() and string(). If $condition is an empty node-set,
then both boolean($condition) and string($condition) should evaluate
to false.

Ah, wait. I think I see the problem. It looks like you are defining
the variable at the top level of the stylesheet, aren't you? In that
case, it's always going to be false. '*' means 'any child _element_
of the current context node'. At the top level of the stylesheet,
there are no child elements.

You should probably define the variable within a template, where you
have more context information to work with.
 
-- 
Matt Gushee
Englewood, Colorado, USA
mgushee@xxxxxxxxxxxxx
http://www.havenrock.com/

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