Hooking up a NSFetchedResultsController

MyStoreClass.m

+ (NSFetchedResultsController *)fetchedResultsController:(id <NSFetchedResultsControllerDelegate>)delegate {
    NSManagedObjectContext *context = [CACoreData sharedManagedObjectContext];

    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    [request setEntity:[NSEntityDescription entityForName:@"MyModel" inManagedObjectContext:context]];

    // must have a sort key
    NSSortDescriptor *anySortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"someSortKey" ascending:YES];
    [request setSortDescriptors:[NSArray arrayWithObjects:anySortDescriptor, nil]];

    NSFetchedResultsController *newController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];

    newController.delegate = delegate;

    return newController;
}

SomeUITableViewController.m

- (void)viewDidLoad
{
    NSError *anyError = nil;
    BOOL success = [self.fetchedResultsController performFetch:&anyError];
    
    if( !success ) NSLog(@"Error = %@", anyError);
}

- (NSFetchedResultsController *)fetchedResultsController {
    if (!fetchedResultsController ) {
        // use this controller as the delegate for fetchedResultsController
        fetchedResultsController = [MyStoreClass fetchedResultsController:self];
    }
    
    return fetchedResultsController;
}

// then add methods as required by the NSFetchedResultsControllerDelegate protocol