BRAccountItem.h

#import <Foundation/Foundation.h>
#import <RestKit/CoreData.h>

@interface BRAccountItem : NSManagedObject

@property (nonatomic, retain) NSString * email;
@property (nonatomic, retain) NSDate * dateCreated;
@property (nonatomic, retain) NSDate * dateUpdated;
@property (nonatomic, retain) NSNumber * id;
@property (nonatomic, retain) NSString * phone;
@property (nonatomic, retain) NSString * zipcode;

@end

BRAccountItem.m

#import "BRAccountItem.h"

@implementation BRAccountItem

@dynamic email;
@dynamic dateCreated;
@dynamic dateUpdated;
@dynamic id;
@dynamic phone;
@dynamic zipcode;

@end

BRAccountViewController.m

- (void)loadObjectsFromDataStore {
    NSFetchRequest *request = [BRAccountItem fetchRequest];
//    NSSortDescriptor *descriptor = [NSSortDescriptor sortDescriptorWithKey:@"dateCreated" ascending:NO];
//    [request setSortDescriptors:[NSArray arrayWithObject:descriptor]];
//    [self setAccount:[BRAccountItem objectWithFetchRequest:request]];
    
    [self setAccount:[BRAccountItem findByPrimaryKey:[NSNumber numberWithInt:1]]];
    NSLog(@"loaded %@, id %@", self.account.email, self.account.id);

    [self setAccount:[BRAccountItem object]];
     self.account.id = [NSNumber numberWithInt:1];
#if 0
    [[RKObjectManager sharedManager] getObject:[self account] delegate:self];
#else
    [[RKObjectManager sharedManager] loadObjectsAtResourcePath:@"/accounts/1" delegate:self];
#endif
}

- (void)objectLoader:(RKObjectLoader *)objectLoader didLoadObjects:(NSArray *)objects {
    NSArray *ary = [BRAccountItem findAll];
    for (BRAccountItem *item in ary) {
        NSLog(@"loaded %@, id %@", item.email, item.id);
    }
}

#pragma mark - RKObjectLoaderDelegate
- (void)objectLoader:(RKObjectLoader *)objectLoader didLoadObject:(id)object {
    NSLog(@"Did load account %@", [[self account] email]);
    [[self emailLabel] setText:[[self account] email]];
    [[self view] setNeedsDisplay];
    [[self refreshControl] endRefreshing];

    NSArray *ary = [BRAccountItem findAll];
    for (BRAccountItem *item in ary) {
        NSLog(@"loaded %@, id %@", item.email, item.id);
    }
}

BRAppDelegate.m

- (void)setupRestKit {
    RKObjectManager *objectManager = [RKObjectManager managerWithBaseURLString:BRBaseURL];
    [objectManager setObjectStore:[RKManagedObjectStore objectStoreWithStoreFilename:@"BestRate.sqlite"
                                                               usingSeedDatabaseName:nil
                                                                  managedObjectModel:nil
                                                                            delegate:self]];
    // TODO: to get rid of duplicates
//    [[objectManager objectStore] setCacheStrategy:[RKFetchRequestManagedObjectCache new]];

    RKManagedObjectMapping *accountMapping =
        [RKManagedObjectMapping mappingForClass:[BRAccountItem class]
                           inManagedObjectStore:[objectManager objectStore]];
    
    [accountMapping setPrimaryKeyAttribute:@"id"];
    [accountMapping mapKeyPath:@"id"
                   toAttribute:@"id"];
    [accountMapping mapKeyPath:@"created_at"
                   toAttribute:@"dateCreated"];
    [accountMapping mapKeyPath:@"updated_at"
                   toAttribute:@"dateUpdated"];
    [accountMapping mapKeyPath:@"email"
                   toAttribute:@"email"];
    [accountMapping mapKeyPath:@"mobile_phone"
                   toAttribute:@"phone"];
    [accountMapping mapKeyPath:@"zipcode"
                   toAttribute:@"zipcode"];

    [[objectManager mappingProvider] setObjectMapping:accountMapping forKeyPath:@"account"];

    // Setup routes
    [[objectManager router] routeClass:[BRAccountItem class]
                        toResourcePath:@"/accounts/:id"];
}