CODEWITHSUNDEEP
objective-cioscore-datadelegatesnsfetchedresultscontroller
CoreCode
CoreCode

Reputation: 2227

NSFetchedResultsController Not Responding to update

I have a NSFetchedResultsController in one of my UITableView and it manages the display of data. The main entity has a number or relationships and when the data in either of those relationships updates, the tableview updates. My problem is this: If I change data in a relationship like this, everything updates correctly:

mainEntity.relationship.name = @"Random new name";

But if I change data in a relationship of a relationship, the NSFetchedResultsController does not recieve that update:

mainEntity.relationship.relationship2.relationship3.name = @"New Random Name";

does not send the update to the NSFetchedResultsController delegate.

Is there something that I need to do to ensure that the delegate receives the updates if a relationship of a relationship's data changes?

Upvotes: 1

Views: 242

Answers (1)

adonoho
adonoho

Reputation: 4339

CoreCode,

Fetch requests are tied to a single entity. The updates are tied to that entity. This is why Core Data sometimes requires denormalized data, i.e. a custom entity that is just used for your table view. You may wish to consider making a special purpose entity.

Andrew

Upvotes: 1

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