TGRTimeline.m

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
    if (!_persistentStoreCoordinator) {
        NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        path = [path stringByAppendingPathComponent:self.account.username];
        
        NSURL *url = [NSURL fileURLWithPath:path];
        
        _persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:self.managedObjectModel];
        
        NSError *error = nil;
        [_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType
                                                  configuration:nil
                                                            URL:url
                                                        options:nil
                                                          error:&error];
        
        if (error) {
            NSLog(@"Error creating the persistent store coordinator: %@", [error localizedDescription]);
        }
    }
    
    return _persistentStoreCoordinator;
}