How to add a custom initialiser to a Managed Object in Core Data

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NSManagedObjects behave differently to NSObjects on many levels. If you’d like to add custom start-up behaviour in your NSManagedObjects, you’ll have noticed that overriding the standard init method isn’t working.

Instead, we can use the awakeFromFetch method. This is called automatically when a managed object is retrieved from the Core Data stack:

- (void)awakefrom {
    [super awakeFromFetch];
    // add custom behaviour here

Use this to set default values or initialise methods in your NSManagedObject classes.

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