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Can I sort across a relation?

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Can I sort across a relation?

Subject: Can I sort across a relation?
From: Todd Freese <email@hidden>
Date: Thu, 26 Oct 2006 18:22:18 -0500

Is it possible to have core data sort across a relation? I have two entities like this: Clip--->SourceListLink

I want to sort Clips based on an attribute in SourceListLink. The following does not work:

NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"sourceListLinks.sortKey" ascending:YES]; [fetchRequest setSortDescriptors:[NSArray arrayWithObject:sortDescriptor]];

sourceListLinks is a defined relationship between the Clip entity and the SourceListLink entity.

Thanks in advance.

Todd
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