[Zope] Formulator, Python Scripts and Exception Data

[Casey Duncan]

I am trying to use Python scripts in Zope 2.3 to validate a Formulator form, 
however I run into a couple of snags:

  - Formulator raises a class-based exception FormValidationError, which I am 
not authorized to import TTW.

  - Formulator returns the error data with the exception.

So, my catch22 is that in order to successfully catch the exception, I must 
use a bare except clause, which of course does not allow me to get at the 
exception data (AFAIK), since I cannot specify a variable for it in except 
nor can I import sys and get at it that way.

So the following things don't work:

from Products.Formulator.Form import FormValidationError
try:
    ...validation stuff...
except FormValiadationError, errors:
   ...deal with errors...

-- or --

try:
    ...validation stuff...
except:
   ...deal with errors, except there's no way to get at them 8^(...

Poking through the source didn't illuminate any built-in trick to get around 
this.

The irony is that I can use DTML to do this, since it is more forgiving about 
exception names, but I don't want to use DTML for this, it is not a template, 
just a validation script.

Anybody got a good solution (besides external methods)?

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