[Zope] dtml-var AND dtml-tree

[Danny William Adair]

For the people who have problems with dtml-tree's "urlparam" only handling
constants...

I patched "lib/python/TreeDisplay/TreeTag.py" so that I can have a parameter
"urlparam_var", an object on the namespace that holds the querystring I want
to insert. This is the first time I patched zope internals, but it works
fine. Maybe someone who knows better can comment on this.

in __init__ I inserted another parameter urlparam_var:

        args=parse_params(
                          ...
                          urlparam=None, urlparam_var=None)

in tpRenderTABLE
I added rendering of "urlparam_var" and made sure there's no "urlparam"
being passed at the same time:

...
            # Propagate extra args through tree. (I only changed the block
that starts with this comment)
            if args.has_key('urlparam_var'):
                if args.has_key('urlparam'):
                    raise ParseError, _tm(
                        'urlparam and urlparam_var given', 'tree')
                tmp=args['urlparam_var']
                param = md.getitem(tmp, 0)
                param = "%s&" % param
            elif args.has_key('urlparam'):
                param = args['urlparam']
                param = "%s&" % param
            else:
                param = ""
...

That's it.
Now, I just have to set the query string by inserting a DTML variable that
holds it, for example a REQUEST variable:

<dtml-call "REQUEST.set('querystring', myString)">
<dtml-tree ... urlparam_var="querystring">
  ...
</dtml-tree>

Thanks for your comments,
hope it helps someone that needs a quick (and cookieless) solution

Danny

>>> -----Ursprungliche Nachricht-----
>>> Von: zope-admin@zope.org [mailto:zope-admin@zope.org]Im Auftrag von
>>> Dieter Maurer
>>> Gesendet: Freitag, 16. Marz 2001 09:00
>>> An: nuno
>>> Cc: zope@zope.org
>>> Betreff: Re: [Zope] dtml-var AND dtml-tree
>>>
>>>
>>> nuno writes:
>>>  > I'm trying to submit a form to a dtml-document (as action)
>>>  > which i did. But if a have a dtml-tree in the action Document
>>>  > the recursion doesn't work on clicking on the +/- icon when
>>> i try to access
>>>  > a dtml-var
>>>  > passed through the form.
>>> I answered similar questions at least three times recently
>>> (you know the searchable mailing list archives (or Google)?).
>>>
>>> Put a feature request into the collector:
>>>
>>>   you want an "urlparam_expr" attribute for "dtml-tree"....
>>>
>>>
>>>
>>> Dieter
>>>
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