I\'m currently working on an App that has a couple of Entities and relationships as illustrated below:
Item <<--> Category.>
That's a perfectly good solution to the problem, Rog.
You certainly don't want/need to subclass NSFetchedResultsController.
@aroth, we don't have enough information to know the details of his object model, but the names certainly imply that category does not own item. Item has a category. His intent is to display a list of items, that is why he is fetching items.