Re: [Zope] Products and clases with new attributes

you could add those attributes at the class level with a sane default value. those at the class level will be picked up by all instances that don't have them at instance level. jens On Monday, Oct 7, 2002, at 06:27 US/Eastern, Antonio Beamud Montero wrote:

Hi all: Long time ago I started to develop a big product, it's under development now, but with some stable releases in a client. My problem is that new releases of a Product adds new attributes and when I upgrade de Product, I need to create another instance and recreate all the system, because old instances in the zobd haven't that attributes... Now, it's no problem, but when this system is in production, with hundred of objects... buff... How I can solve this problem...?