How to find an element of an array by id with Observable in Angular2

Question

I decided to use Observable instead of Http promises.

That is how my Promise service looked:

export class MovieService {

    movies: Movie[]
    mov         


        

Answer 1

I suppose you should use map method instead of subscribe which returns Subscription object

export class MovieService {
  movies: Movie[];
  movie: Movie;

  constructor(private http: Http) {}

  getMovies(): Observable<Movie[]> {
    return this.http.get('http://api.request.com')
      .map((res: Response) => res.json()['results']);
  }

  getMovie(id: number): Observable<Movie> {
    return this.getMovies()
      .map(movies => movies.find(movie => movie.id == id));
  }
}

Plunker Example