class ViewController: BaseViewController { let disposeBag = DisposeBag() @IBOutlet var pushButton: UIButton! @IBOutlet var presentButton: UIButton! @IBOutlet weak var dismissButton: UIButton! var voidSegue: AnyObserver<Void> { return ModalSegue(fromViewController: self, toViewControllerFactory: { (sender, context) -> SecondViewController in return SecondViewController() }).asObserver() } var profileSegue: AnyObserver<ProfileViewModel> { return NavigationSegue(fromViewController: self.navigationController!, toViewControllerFactory: { (sender, context) -> ProfileViewController in let profileViewController: ProfileViewController = ... profileViewController.profileViewModel = context return profileViewController }).asObserver() } override func viewDidLoad() { super.viewDidLoad() presentButton.rx.tap .bindTo(voidSegue) .addDisposableTo(disposeBag) pushButton.rx.tap .map { return ProfileViewModel(name: "John Doe", email: "JohnDoe@example.com", avatar: UIImage(named: "avatar")) } .bindTo(profileSegue) .addDisposableTo(disposeBag) } }