Re: Core Data question
Re: Core Data question
- Subject: Re: Core Data question
- From: Chris Hanson <email@hidden>
- Date: Sun, 10 Aug 2008 20:30:22 -0700
On Aug 10, 2008, at 6:51 PM, Graham Perks wrote:
I do this, where I have an EventImage that refers back to a main
Event, "self" is the managed object for the Event, which is your
Account:
// create new EventImage, this would be akin to your
AccountDetails
imageHolder = (EventImage*)
[NSEntityDescription
insertNewObjectForEntityForName:@"EventImage"
inManagedObjectContext:
[self managedObjectContext]];
[imageHolder setImage:image]; // set some data in the new
object
// Add reference from Event to it's Image
[self setValue:imageHolder forKey:@"imageHolder"];
// Add the reverse relationship, from the image back to the
event.
[imageHolder setValue:self forKey:@"event"];
If your Event.imageHolder and EventImage.event relationships are
inverses of each other, you should not need to do a thing to ensure
that the other is set after doing the first. That's what marking
relationships as inverses means; Core Data will set them for you
automatically.
-- Chris
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