[Zope] tree and dtml-with only not working for me

[Thomas Weiner]

Andy Heath wrote:

[ preventing acquisition within a tree-tag ]

After going through the archives my third (and hopefully better tested)
trial with this :-)

In your Extensions directory create an external python method with this
code:

def prev_acqu(self, prop):
    if self.__dict__.has_key(prop):
       return getattr(self,prop)
    else:
       return ''

add it with the id prev_acqu (or anything else you like better) to a
folder in the acquisition path.

In your tree code do:

   <dtml-var "prev_acqu('rubbish')">

If you choose a different id, of course you have to take it here, too. 

Apologies again for jumping into this thread without exactly verifying
my code examples yesterday,
thomas