100 lines
2.4 KiB
TypeScript
100 lines
2.4 KiB
TypeScript
// #docplaster
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// #docregion
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import { Injectable } from '@angular/core';
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import { Headers, Http } from '@angular/http';
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// #docregion rxjs
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import 'rxjs/add/operator/toPromise';
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// #enddocregion rxjs
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import { Hero } from './hero';
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@Injectable()
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export class HeroService {
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// #docregion getHeroes
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private heroesUrl = 'app/heroes'; // URL to web api
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constructor(private http: Http) { }
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getHeroes() {
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return this.http.get(this.heroesUrl)
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// #docregion to-promise
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.toPromise()
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// #enddocregion to-promise
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// #docregion to-data
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.then(response => response.json().data as Hero[])
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// #enddocregion to-data
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// #docregion catch
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.catch(this.handleError);
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// #enddocregion catch
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}
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// #enddocregion getHeroes
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getHero(id: number) {
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return this.getHeroes()
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.then(heroes => heroes.find(hero => hero.id === id));
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}
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// #docregion save
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save(hero: Hero): Promise<Hero> {
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if (hero.id) {
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return this.put(hero);
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}
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return this.post(hero);
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}
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// #enddocregion save
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// #docregion delete
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delete(hero: Hero) {
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let headers = new Headers();
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headers.append('Content-Type', 'application/json');
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let url = `${this.heroesUrl}/${hero.id}`;
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return this.http
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.delete(url, {headers: headers})
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.toPromise()
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.catch(this.handleError);
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}
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// #enddocregion delete
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// #docregion post
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// Add new Hero
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private post(hero: Hero): Promise<Hero> {
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let headers = new Headers({
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'Content-Type': 'application/json'});
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return this.http
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.post(this.heroesUrl, JSON.stringify(hero), {headers: headers})
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.toPromise()
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.then(res => res.json().data)
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.catch(this.handleError);
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}
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// #enddocregion post
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// #docregion put
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// Update existing Hero
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private put(hero: Hero) {
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let headers = new Headers();
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headers.append('Content-Type', 'application/json');
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let url = `${this.heroesUrl}/${hero.id}`;
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return this.http
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.put(url, JSON.stringify(hero), {headers: headers})
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.toPromise()
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.then(() => hero)
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.catch(this.handleError);
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}
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// #enddocregion put
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// #docregion handleError
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private handleError(error: any) {
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console.error('An error occurred', error);
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return Promise.reject(error.message || error);
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}
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// #enddocregion handleError
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}
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