How to bind rx_tap (UIButton) to ViewModel?

Question

I have authorization controller with 2 UITextField properties and 1 UIButton. I want to bind my View to ViewModel but don\'t know how to to do it. This is my AuthorizatioVC.swi

Answer 1

First approach use PublishSubject

class ViewController: UIViewController {
  @IBOutlet weak var loginBtn: UIButton!
  var vm: ViewModel?
  let disposebag = DisposeBag()

  override func viewDidLoad() {
      super.viewDidLoad()
      bindUi()
  }

  func bindUi() {
    (loginBtn.rx.tap).bind(to: vm!.loginSbj).addDisposableTo(disposebag)
  }
}

class ViewModel {
  let loginSbj = PublishSubject()

  init() {
    loginSbj.do(onNext: { _ in
      // do something
    })
  }

}

The second approach use Action

class ViewController: UIViewController {
   @IBOutlet weak var loginBtn: UIButton!
   var vm: ViewModel?

   override func viewDidLoad() {
       super.viewDidLoad()
       bindUi()
   }

   func bindUi() {
       loginBtn.rx.action = vm!.loginAction
   }
}

class ViewModel {

  let loginAction: CococaAction = CocoaAction {
    // do something
  }
}