>> >> >> I just had another thought.... I have another core data model in the app. I >> wonder if the NSPersistentDocument infrastructure is picking up the wrong >> model? As I'm looking through the project, I realise I don't know how the >> document knows which core data model to use.... OK, back to the >> documentation on NSPersistentDocument. >> > > By default it will merge all models in the main bundle. So if the other model > changed, you would also have a problem. If you want to specify only one model > for the document, you should override [NSPersistentDocument > managedObjectModel].
Yes, thanks. I got that from the documents, but doing an override and explicitly pointing to the model doesn't help. I have then gone on to check the entity hashes in the XML store on disk against the hashes in the model loaded for that XML store using this snippet: NSError *metaerror = nil; NSDictionary *storeMeta = [NSPersistentStoreCoordinator metadataForPersistentStoreOfType:nil URL:url error:&metaerror]; NSLog(@"Metadata at URL %@", storeMeta); NSManagedObjectModel *oldManagedObjectModel = [NSManagedObjectModel mergedModelFromBundles:@[[NSBundle mainBundle]] forStoreMetadata:storeMeta]; NSLog(@"Old managed object model %@", [oldManagedObjectModel entityVersionHashesByName]); and the hashes all match. So I don't know why the migration says it's can't locate the source model since I can locate it myself. More digging... Cheers, Martin _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com