MOC

- (void) resetApplicationModel
{

    // remove the file containing the data
    _managedObjectContext = nil;
    _managedObjectModel = nil;
    _persistentStoreCoordinator = nil;



    NSError *error;
    NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"abc.sqlite"];

    [[NSFileManager defaultManager] removeItemAtURL:storeURL error:&error];

    [self managedObjectContext];

    NSMutableDictionary* userInfo = [NSMutableDictionary dictionary];
    [userInfo setObject:[self managedObjectContext] forKey:@"managedObjectContext"];

    [[NSNotificationCenter defaultCenter] postNotificationName:@"kNotificationDestroyAllNSFetchedResultsControllers" object:self userInfo:userInfo];
}


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {

       [[NSNotificationCenter defaultCenter] addObserverForName:@"kNotificationDestroyAllNSFetchedResultsControllers" object:nil queue:nil usingBlock:^(NSNotification *note) {
            NSLog(@"[%@] must destroy my nsfetchedresultscontroller", [self class]);
            //m_controller = nil;
            NSDictionary* userInfo = note.userInfo;
            self.managedObjectContext = [userInfo objectForKey:@"managedObjectContext"];
            NSLog (@"Successfully received:%@", self.managedObjectContext);


            NSError *error;
            if (![m_controller performFetch:&error]) {
                /*
                 Replace this implementation with code to handle the error appropriately.

                 abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
                 */
                NSLog(@"Unresolved error %@, %@", error, [error localizedDescription]);
                abort();
            }
            }];
    }
    return self;
}