[Zopexmlmethods-devel] Override variable definitions via query string?

[Craeg K S. <cs...@ar...>]

Hello:

I am using the latest and greatest ZopeXMLMethods from CVS, and I wanted
to override an xsl:param dynamically.

My specific example is this:  I have a transformer that renders HTML for an
arbitrary "article" doctype.  For most articles, you don't want a table 
of contents.
So I have the following at the top of article.xsl:

<xsl:param name="toc">no</xsl:param>

But for official project documents, we _do_ want a table of contents.
Here, in my naivete, is that I tried to do inside my page template:

          <div tal:define="doc nocall:python:folder[docname]" >
             <div tal:replace="structure doc/articlexsl?toc='yes'"/>
          </div>

    * Module Products.PageTemplates.TALES, line 217, in evaluate
      *URL: /maestro/dashboard/papers*
      *Line 40, Column 13*
      *Expression: standard:"doc/articlexsl?toc='yes'"*
      *Names:*

{'container': <Folder instance at 90c5f08>,
 'default': <Products.PageTemplates.TALES.Default instance at 0x867fb74>,
 'here': <Folder instance at 90c5f08>,
 'loop': <SafeMapping instance at 8671700>,
 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x868decc>,
 'nothing': None,
 'options': {'args': ()},
 'repeat': <SafeMapping instance at 8671700>,
 'request': <HTTPRequest, URL=http://localhost:8080/maestro/dashboard/papers>,
 'root': <Application instance at 8e78418>,
 'template': <ZopePageTemplate at /maestro/dashboard/papers>,
 'traverse_subpath': ['p-tech-proposal.xml'],
 'user': cstrong}

    * Module Products.PageTemplates.Expressions, line 206, in __call__
    * Module Products.PageTemplates.Expressions, line 194, in _eval
    * Module Products.PageTemplates.Expressions, line 150, in _eval
      __traceback_info__: doc
    * Module Products.PageTemplates.Expressions, line 360, in
      restrictedTraverse
      __traceback_info__: {'path': ["articlexsl?toc='yes'"],
      'TraversalRequestNameStack': []}

AttributeError


Hum.  What am I doing wrong?  
Thanks in advance,

--Craeg