Mathew,

I think you need to look at "Signals".      It's an implementation of
Pydispatcher.  Basically, you register your signal to a particular
object.  Whenever that object is about to be changed the signal is sent
and your code is runt.

There is a "Pre-Save" state which should allow you to run the code in
the signal before saving the object to the database.

MerMer


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