Dividing UITableView into sections by Core Data Attribute

michaelhansen · May 2012

I'm quite the newbie at Core Data, so please bear with me. ;)

In my Data Model, I have a single entity called "Item", with 2 attributes, "Section" and "Name." I already have the UITableView (my main view) populated using by Name, but I want to divide the TableView into 3 different sections, determined by attribute "section." I'm thinking that the "section" attribute should be an integer, so 0 would be the first section, 1 would be the second and 2 would be the third.

I really am not sure how to divide the TableView into the sections. I'm using NSFetchedResultsController. Here's the current code.

- (void)setupFetchedResultsController
{
    // 1 - Decide what Entity you want
    NSString *dbEntityName = @\"Item\"; // Put your entity name here
    
    // 2 - Request that Entity
    NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:dbEntityName];
    
    // 3 - Filter it if you want
    //request.predicate = [NSPredicate predicateWithFormat:@\"Item.name = what\"];
    
    // 4 - Sort it if you want
    request.sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@\"name\"
                                                                                     ascending:YES
                                                                                      selector:@selector(localizedCaseInsensitiveCompare:)]];
    // 5 - Fetch it
    self.fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request
                                                                        managedObjectContext:self.managedObjectContext
                                                                          sectionNameKeyPath:nil
                                                                                   cacheName:nil];
    [self performFetch];
}

Also, I was wondering if the Fetch Request template inside the data model in Xcode would help out at all. I see how to create the fetch request, but not how to make it do anything with what it fetches (ex: put the fetched data into a certain TableView section.)

If anyone could help out, it would be greatly appreciated.

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Dividing UITableView into sections by Core Data Attribute