MovieHunt blog part4. detail view model

MovieDetailViewModel.kt

class MovieDetailViewModel : BaseViewModel() {
   private val movieRepo: MovieRepo by inject()
   private val _movieDetail = MutableLiveData<MovieModel>()

   val posterUrl: LiveData<String> = Transformations.map(_movieDetail) { it.getPosterUrl() }
   val title: LiveData<String> = Transformations.map(_movieDetail) { it.displayTitle() }
   val rating: LiveData<Float> = Transformations.map(_movieDetail) { it.display5StarsRating() }
   val voteCount: LiveData<String> = Transformations.map(_movieDetail) { it.displayVoteCount() }
   val duration: LiveData<String> = Transformations.map(_movieDetail) { it.displayDuration() }
   val releaseDate: LiveData<String> = Transformations.map(_movieDetail) { it.displayReleaseDate() }
   
   fun fetchMovieDetail(id: String) {
       movieRepo.fetchMovieDetail(id)
           .subscribeOn(Schedulers.io())
           .doOnSuccess { _movieDetail.postValue(it) }
           .subscribe()
           .disposeOnCleared()
   }
}