On Sun, 13 Dec 1998, Ty Sarna wrote:

I'm obviosuly missing something here.

I have a product, a subclass of Folder. It has several methods that do things to its internal state. Some of these methods cause a transacton to be generated (Ie, when adding or deleting objects, setting properties, etc., the method shows up in Undo). When I shut down zope and restart it, these changes are still there. My added methods have effect that is forgotten at shutdown, and they don't show up in the Undo list. I have another Product where my added methods do work correctly.

What am I missing?

It sounds like your using a mutable (Is this the right term?) like a list or a dictionary to store your properties. You'll need to call the __change__() method with a value of true to notify the storage routines that this objects needs to be changed. So for example do something like this. class Spam: def __init__(self) self.eggs={} def add(self,id, value) self.eggs[id] = value self.__changed__(1) --------------------------------------------------- - Scott Robertson Phone: 714.972.2299 - - CodeIt Computing Fax: 714.972.2399 - - http://codeit.com - ---------------------------------------------------