[Zope] - Problem evaluating <!--#var URL0--> in DTML

[Brian Lloyd]

> I can't seem to access <!--#var URL0--> directly in my DTML 
> file though
> <!--#var "REQUEST['URL0']"--> works just fine.  I'm using the
> DocumentTemplate that came with Zope 1.9.0.  I'm calling the document
> template instance with REQUEST as one of the parameters.
> 
> Any suggestions?
> 
> Thanks,
> 
> Skip Montanaro

Skip,

  Are you calling the template with REQUEST as the default
mapping parameter, or as another keyword param? This is the
only thing I can see that might be causing this (in Zope, the
REQUEST is passed as the mapping param, and <!--#var URL0-->
works).

Given a template's constructor:

 def __init__(self, source_string='', mapping=None, 
              __name__='<string>', **vars):


...if you instantiated it using:

my_doc=TemplateClass(src, REQUEST, var1='', var2='')

then <!--#var URL0--> _should_ work. If, however, you were
to use:

my_doc=TemplateClass(src, some_other_mapping, REQUEST=REQUEST, ...)

or even:

my_doc=TemplateClass(src, REQUEST=REQUEST, ...)

then <!--#var URL0--> wouldn't work, because REQUEST isn't being
used as the default mapping for name lookup
(though <!--#var "REQUEST['URL0']"--> would work as expected).


Brian Lloyd        brian@digicool.com
Software Engineer  540.371.6909              
Digital Creations  http://www.digicool.com