Add persistent field to an App Engine Datastore class?
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            by Joren
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        Published on 2010-06-11T02:46:41Z
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google-app-engine
So if I have a class of which I have a number saved in a datastore, and then seek to add a field later, how can I prevent all my previous objects breaking? Is there a way to retroactively set those fields so they're not null?
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