45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
/* Promise version */
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// #docplaster
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// #docregion
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import {Injectable} from 'angular2/core';
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import {Http, Response} from 'angular2/http';
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import {Headers, RequestOptions} from 'angular2/http';
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import {Hero} from './hero';
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@Injectable()
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export class HeroService {
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constructor (private http: Http) {}
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// URL to web api
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private _heroesUrl = 'app/heroes.json';
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// #docregion methods
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getHeroes () {
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return this.http.get(this._heroesUrl)
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.toPromise()
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.then(res => <Hero[]> res.json().data, this.handleError)
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.then(data => { console.log(data); return data; }); // eyeball results in the console
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}
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addHero (name: string) : Promise<Hero> {
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let body = JSON.stringify({ name });
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let headers = new Headers({ 'Content-Type': 'application/json' });
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let options = new RequestOptions({ headers: headers });
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return this.http.post(this._heroesUrl, body, options)
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.toPromise()
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.then(res => <Hero> res.json().data)
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.catch(this.handleError);
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}
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private handleError (error: any) {
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// in a real world app, we may send the error to some remote logging infrastructure
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// instead of just logging it to the console
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console.error(error);
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return Promise.reject(error.message || error.json().error || 'Server error');
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}
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// #enddocregion methods
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}
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// #enddocregion
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