[Zope] Loosing namespace when calling a DTML-Method

[Sam Gendler]

Chris,
    I have been saving copies of all responses to questions like this, that are
asked SO frequently by newbies.  I have about 40 questoins answered now.  I
WILL find the time to write up a content-devloper newbie FAQ and get it
published on the site.  I will try to do so by this weekend.

--sam

Chris McDonough wrote:

> For reasons currently beyond my scope of understanding, you need to call
> DTML methods in the following manner:
>
> <dtml-var expr="my_other_dtml_method(_.None, _, food1='eggs',
> food2='spam')">
>
> The important parts are the _.None and the _ arguments before any other
> passed-in stuff.
>
> This is a really common problem, and I should really go write a how-to.
> But first I gotta be able to justify why you need to do this.  Time to
> hit the archives.
>
> Bertl wrote:
> >
> > Hi, people!
> >
> > I'm a Zope newbie and have a big big problem which i could not find
> > anything about on the lists. I'm using the zope package that comes with
> > debian linux potato (2.1.2) and the problem is the following:
> >
> > When i call a DTML Method with dtml-var or dtml-call, the called method
> > cannot access any object. Not REQUEST, not an with dtml-let or
> > dtml-with assigned variable, nothing. Further the called method cannot
> > access any Objects in it's own folder, even when i wrap it with <dtml-with
> > folder> (which is just the same problem).
> > Accessing the same variables inside the calling function works just like
> > expected. When i change the DTML Method to a DTML Document, it cannot
> > access variables from outside, but gets an Authentication error when
> > accessing objects in the current namespace
> >
> > My current workaround is to code everything in Python, as this works just
> > great or to do everything in one big DTML Method. But this is not a long
> > term solution!
> >
> > I see two possible explanations for this phenomenon: i totally
> > misunderstand the Zope-security model, which is not unlikely, or my Zope
> > installation is buggy. (I hope it is the first one as i dont feel like
> > installing a full featured Zope with PostgresSQL binding and dont want to
> > wait for the 2.1.3 .deb)
> >
> > Has anybody an idea what's going on?
> >
> > thx,
> > bertl
> >
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>
> --
> Chris McDonough
> Digital Creations, Inc.
> Zope - http://www.zope.org
>
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--
Sam Gendler
Chief Technology Officer - Impossible, Inc.
1222 State St. Suite 250
Santa Barbara CA. 93101
w: 805-560-0508
f: 805-560-0608
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e: sgendler@impossible.com