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aRmanNM/book-store-service.ts

Created April 5, 2021 07:23
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  1. aRmanNM created this gist Apr 5, 2021.
    23 changes: 23 additions & 0 deletions book-store-service.ts
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,23 @@
    @Injectable({
    providedIn: 'root'
    })
    export class BookStoreService {
    private _books = new BehaviorSubject<Book[]>([]);
    public readonly books$: Observable<Book[]> = this._books.asObservable();

    constructor(private bookBackend: BookBackendService) {
    this.getBooks();
    }

    addBook(newBook: Book): void {
    this.bookBackend.addBook(newBook).subscribe((res) => {
    this._books.next(res);
    });
    }

    getBooks(): void {
    this.bookBackend.getBooks().subscribe((res) => {
    this._books.next(res);
    });
    }
    }