Core Data Change property value when another property changes

Posted by user320587 on Stack Overflow See other posts from Stack Overflow or by user320587
Published on 2010-06-12T22:23:26Z Indexed on 2010/06/12 22:33 UTC
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objective-c

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iphone-sdk

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core-data

Hi, I have a Core Data Entity which has three properties startDate, endDate and duration. All three properties are persistent properties. I would like to know how I can calculate and update the duration property whenever the value for startDate and endDate changes?

BTW, I won't be able to make the duration as transient property since I have to use the property for sorting in my table view?

Any help is greatly appreciated

Thanks, Javid

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