[Zope] Re: How do I update objects?

[Chris Withers]

Thomas Guettler wrote:
> On Mon, Feb 17, 2003 at 03:21:19PM +0200, Cornel Nitu wrote:
> 
>>You can try this piece of code ...
>>
>>def __setstate__(self, state):
>>    """update"""
>>    YourObjectClass.inheritedAttribute('__setstate__')(self, state)
>>    if not hasattr(self,'newProperty'):
>>      self.newProperty = self.aq_parent.title
> 
> 
> Hi!
> 
> I tried this some time ago. This "magical" update did not work for
> me. If I recall correctly, the function didn't get called if a object
> was in memory.
> 
> Now all objects have a refresh method. If I upgrade my source code I
> call this method for all objects.

I wrote this product:

http://www.zope.org/Members/chrisw/UpdateSupport/

...to help write external methods that go through a ZODb an update all objects 
of a given type.

It works for me and has worked for numerous Squishdot updates...

cheers,

Chris