Annotation with NSManagedObject - objective-c

Question

I'm relatively new to objective-C and iOS, so I ran into a problem using an NSManagedObject subclass as a MKAnnotation. I do a fetch request to get all 'Places' (the NSManagedObject subclass and MKAnnotation), so I can populate the map.
All fine getting fetching them on viewDidLoad on the MapController:
- (void)viewDidLoad
{
[super viewDidLoad];
DatabaseHelper *db = [DatabaseHelper newDatabaseHelper]; // does all the fetch requests ahead...
NSArray *places = [[db getPlacesForDeck:#"PlacesDeck"] allObjects];
/*
[places enumerateObjectsUsingBlock:^(Place *place, NSUInteger i, BOOL *stop) {
NSLog(#"Place Number: %d", i);
NSLog(#"Place : %#", place.name);
NSLog(#"Place latitude: %#", place.latitude); ALL FINE HERE
NSLog(#"Place longitude: %#", place.longitude);
}];
*/
self.annotations = places;
[self.mapView addAnnotations:places];
}
NSLog reports fine, however as the maps gets drawn the annotations title, and coordinates default to null, and (0,0).
- (NSString *) title{
return self.name; //name is an attribute from NSManagedObject subclass.
}
- (CLLocationCoordinate2D) coordinate{
CLLocationCoordinate2D coord;
coord.latitude = [self.latitude doubleValue]; // Longitude and latitude
coord.longitude = [self.longitude doubleValue]; // also dynamic attributes.
return coord;
}
My guess was that as I pass the 'places' array I somehow dereference each place. However I read somewhere NSArray strongly references those objects, so I'm not quite sure how am I "loosing" the data. Any tips on what's happening? Or am I taking the wrong approach?

Answer 1

the coordinate accessor is simpler like this:
- (CLLocationCoordinate2D)coordinate{
return CLLocationCoordinate2DMake(self.latitude, self.longitude);
}