Chris Withers wrote:
Hi All,

Just been wondering about the need to retrofit:


...into lots of code. Can we do anything less intrusive?

I mean, if a non-Zope object has changed, why should it have to think about emitting events?

Objects don't send events about themselves. It's the code that does things to objects that has the responsibility of sending the right event. E.g. if your code (e.g. a view) modifies an object, it has to send the event. Zope's form machineries do this already, btw.

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