gistfile1.m

    // Set up RestKit Logging
    RKLogConfigureByName("RestKit", RKLogLevelTrace);
    RKLogConfigureByName("RestKit/Network*", RKLogLevelTrace);
    RKLogConfigureByName("RestKit/ObjectMapping", RKLogLevelTrace);
    
    // Initialize RestKit
    NSURL *baseURL = [NSURL URLWithString:[[NSUserDefaults standardUserDefaults] valueForKey:@"application_base_url"]];
    RKObjectManager *objectManager = [RKObjectManager managerWithBaseURL:baseURL];
    
    // Enable Activity Indicator Spinner
    [AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
    
    // Initialize managed object store
    NSManagedObjectModel *managedObjectModel = [NSManagedObjectModel mergedModelFromBundles:nil];
    RKManagedObjectStore *managedObjectStore = [[RKManagedObjectStore alloc] initWithManagedObjectModel:managedObjectModel];
    objectManager.managedObjectStore = managedObjectStore;
    [managedObjectStore createManagedObjectContexts];
    
    // Setup our object mappings
    /**
     Mapping by entity. Here we are configuring a mapping by targetting a Core Data entity with a specific
     name. This allows us to map back Twitter user objects directly onto NSManagedObject instances --
     there is no backing model class!
     */
    RKEntityMapping *userMapping = [RKEntityMapping mappingForEntityForName:@"User" inManagedObjectStore:managedObjectStore];
    userMapping.identificationAttributes = @[ @"userID" ];
    userMapping.setNilForMissingRelationships = YES;
    userMapping.setDefaultValueForMissingAttributes = YES;
    [userMapping addAttributeMappingsFromDictionary:@{
      @"id": @"userID",
      @"full_name": @"fullName",
      @"display_name": @"displayName",
      @"username": @"username",
      @"lsuid": @"userLSUID",
      @"photo_hash": @"photoHash",
    }];