Application update, insert data in coredata while preserving userdata without modelchange

Question

I want to release an update for my app.

I'm stuck on how to update the existing core data database which also stores data entered by the user. All i need to do is update a couple of records and preserve current user data. No changes are made to the model.

Thanks.

score 3 · Accepted Answer · answered May 01 '10 at 16:13

3

Write a chunk of code that performs the update, and set a user preference value (NSUserDefaults) when you have done so. Include that code in your new version, checking the preference value first.

answered May 01 '10 at 16:13

Paul Lynch

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Or store the note in the metadata of the persistent store so that it can survive a wipe of the user preferences. – Marcus S. Zarra May 02 '10 at 05:24
Most likely case for a wipe of prefs will also wipe the apps documents folder (app reinstall). – Paul Lynch May 02 '10 at 10:55

Application update, insert data in coredata while preserving userdata without modelchange

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