Shows one of comfort for me ways to design MVP with RxBindings

BasePresenter.kt

class BasePresenter {
  
  private val detachDisposable = CompositeDisposable()
  private val destroyDisposable = CompositeDisposable()
  
  fun unsubscribeOnDetach(d: Disposable) {
    detachDisposable.add(d)
  }
  
  fun unsubscribeOnDestroy(d: Disposable) {
    destroyDisposable.add(d)
  }
  
  fun onDetachView() {
    detachDisposable.clear()
  }
  
  fun onDestroy() {
    destroyDisposable.clear()
  }
}

MvpFragment.kt

class MvpFragment : BaseFragment(), Contract.View {
  override fun onViewCreated(view: View, state: Bundle) {
    RxTextView.afterTextChanges(editText)
        .map(TextViewAfterTextChangeEvent::editable)
        .map(Editable::toString)
        .doOnSubscribe(presenter::unsubscribeOnDetach)
        .subscribe(presenter::onEditTextChanged)
  }
}

MvpPresenter.kt

class MvpPresenter : BasePresenter, Contract.Presenter {
  
  private val textChanges = RxRelay.create<String>()
  
  init {
    textChanges
        .doOnSubscribe(this::unsubscribeOnDestroy)
        .subscribe({
          // todo do stuff
        })
  }
}