I'd like to hit and display every 5 seconds from a http link, and it seems to be that using angular2, an observable would be the way to go?
getPhaseVotes(issue: string) {
return this.http.get(this.URL + 'issue/' + issue + '/getPhaseVotes')
.subscribe(data => this.phase_votes = data.json(),
err => console.log(err),
() => this.getStatus(issue));
}
How should I be updating this every 5 seconds?
You could use the interval operator of Observable:
@Injeactable()
export class SomeService {
constructor(private http:Http) {}
getPhaseVotes(issue: string) {
return Observable.interval(5000).flatMap(() => {
return this.http.get(this.URL + 'issue/' + issue + '/getPhaseVotes')
.map(res => res.json());
});
}
}
This way you need to call once the getPhaseVotes method and subscribe on it. Every 5 seconds, an HTTP request will be executed transparently and the result provided within the subscribed callback:
@Component({
(...)
})
export class SomeComponent {
constructor(private service:SomeService) {
this.service.getPhaseVotes('someissue')
.subscribe(data => this.phase_votes = data,
err => console.log(err),
() => this.getStatus(issue));
}
}
This article could give you more hints in its "Polling" section:
