Sorting Core Data fetch results

Question

My NSManagedObject has a property NSDate with format: 2012-03-27 14:43:22 +0000. I want to sort my results by date, so I do: NSSortDescriptor *sort= [[NSSortDescriptor alloc] initWithKey:@"createDate" ascending:NO selector:@selector(compare:)];

And I separate into sections using sectionNameKeyPath: NSFetchedResultsController *theFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:appDelegate.managedObjectContext sectionNameKeyPath:@"createDate" cacheName:nil];

However, I want to sort by days, not by exact date. Currently, if I have two createDates of the same day but seconds apart, they are sorted into separate sections. I want to sort all objects with the same day into the same section. How would I do this?

found a similar question here: [Sort NSDate without respect to the time of day - just the date][1] [1]: http://stackoverflow.com/questions/8651733/sort-nsdate-without-respect-to-the-time-of-day-just-the-date — fengd, Mar 30 '12 at 03:11

score 1 · Answer 1 · answered Mar 30 '12 at 02:32

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Just a rough thought. You can store the date with string "2012-03-27", I think you can sort them by days.

answered Mar 30 '12 at 02:32

yibuyiqu

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If you are not sure of an answer post it as a comment please. Otherwise people will down vote your answers. – rohan-patel Mar 30 '12 at 05:12

score 0 · Accepted Answer · edited May 23 '17 at 11:48

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Here's two posts that I came across the other day that discuss non-standard sections. It will give you a few cool directions and ideas:

Using custom sections with NSFetchedResultsController?
Group by weekdays with Core Data

edited May 23 '17 at 11:48

Community

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answered Mar 30 '12 at 02:48

Gobot

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Sorting Core Data fetch results

2 Answers2