[Zope-dev] Zope 2.4.2 DTML Method Bug

[Casey Duncan]

One of my products exposed a bug in the 2.4.2 version of DTMLMethod.py. It is 
minor and can be worked around, but I wanted to point it out:

Line 203 of DTMLMethod.py now contains:

del self.__dict__['validate']

which is part of a try...finally statement.

It seems that the "validate" key is not always present in the object at that 
point, specifically if you recursively call an object in a different context 
then it was originally called. as in:

<dtml-with name="something">
  <dtml-return name="this">
</dtml-with>

This piece of code resulted in a KeyError on "validate" in my product code, 
which had previously worked fine. Perhaps another try statement should be 
wrapped around this del statement?

/---------------------------------------------------\
  Casey Duncan, Sr. Web Developer
  National Legal Aid and Defender Association
  c.duncan@nlada.org
\---------------------------------------------------/