Get all objects that belongs to a entity in a one-to-many relationship with core data?

I like to add derived methods to access things like this. I add these to the custom class but don't model them in the data model Once you get your accessor working correctly, it should return a mutable set. Then: (NSArray *)noteblockPagesArray { NSMutableSet *pages = self.

NoteblockPages; NSSortDescriptor *sortDescriptor = NSSortDescriptor sortDescriptorWithKey:@"createdAt" ascending:YES; NSArray *orderedPages = pages sortedArrayUsingDescriptors:NSArray arrayWithObject:sortDescriptor; return orderedPages; } Modify to cache value as appropriate/needed.

I like to add derived methods to access things like this. I add these to the custom class but don't model them in the data model. Once you get your accessor working correctly, it should return a mutable set.

Then: - (NSArray *)noteblockPagesArray { NSMutableSet *pages = self. NoteblockPages; NSSortDescriptor *sortDescriptor = NSSortDescriptor sortDescriptorWithKey:@"createdAt" ascending:YES; NSArray *orderedPages = pages sortedArrayUsingDescriptors:NSArray arrayWithObject:sortDescriptor; return orderedPages; } Modify to cache value as appropriate/needed.

Thanks, that looks like a clean solution. Will try it once I solved my accessor problem. – Anders Aug 11 at 22:04 It turned out that the property did get set, I just had to move the NSLog statement to viewWillAppear instead of my init method.

– Anders Aug 12 at 10:59 Think I got it to work, thanks. – Anders Aug 12 at 11:26.

Let CoreData do the work. You have an instance of the Noteblock, correct? YourNoteblock noteblockPages.

Thanks for your answer. I have a instance variable and property called pagesNoteblock that's an instance of Noteblock in my second tableview. I try to set that instance like this in my previous tableview (that is a AQGridView, gridView) in: - (AQGridView *)gridView didSelectItemAtIndex:(NSUInteger)index { PagesTableViewController * pagesController = PagesTableViewController alloc init; Noteblock * selectedNoteblock = noteblockList objectAtIndex:index; pagesController setPagesNoteblock:selectedNoteblock; But it doesn't work.

The instance isn't getting set. – Anders Aug 11 at 20:54 I'd focus the effort on finding out why that isn't getting set rather than doing a new query. You might want to pose that as a new question with the relevant bits of code.

Good luck. – picciano Aug 11 at 21:04.

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