The basic answer is that you typically don't need to worry about it beyond
making sure you set a reasonable default in the declaration.

After that, the only thing you really need to do is have some defensive
coding in anything that tries to use the attribute (like a template) to do
something reasonable if its absent.


On Thu, Oct 31, 2013 at 12:51 AM, Serge Renfer <[email protected]>wrote:

> Hello,
>
> I've been searching for doc on how to update existing objects when for
> example you add a property in dexterity interface!
>
> I'm quite sure a doc exists on that matter, but I can't get a hold on it!
>
> If any of you could give me pointers on that!
>
> Thanks!
> serge
>
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