How to invoke component to update data? - rest

Question

I have a main component with 2 sub-components (update, profile).
On update component, I have a form with several input fields. When I submit a form, profile section information should update after a successful request.
The problem is, profile information doesn't update after a successful request.
So, how to invoke profile component to refresh updated data? I tried to call a service after successful request, but no luck.
By the way, parent service looks like:
#Injectable()
export class AvailabilityService {
constructor(private http: Http) {
}
getProfile() {
return this.http.get(API_URL + '/user/profile')
.map(this.extractData)
.catch(this.handleError);
}
freeOwnersParking(availableDates: AvailableDates) {
let domain = API_URL + '/parking/availability';
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
let body = JSON.stringify(availableDates);
return this.http.put(domain, body, options)
.catch(this.handleError);
}
private extractData(res: Response) {
let body = res.json();
return body;
}
private handleError(error: any) {
let errMsg = (error.message) ? error.message :
error.status ? `${error.status} - ${error.statusText}` : 'Server error';
return Observable.throw(errMsg);
}
}
UPDATE
Get profile:
getProfile() {
this.availabilityService.getProfile()
.subscribe(
profile =>this.profile = profile,
error => this.errorMessage = <any>error
);
}
Update profile:
freeOwnersParking() {
this.availabilityService.freeOwnersParking(this.availableDates)
.subscribe(
response => this.availabilityService.getProfile(),
error => this.errorMessage = error
);
}

Answer 1

You need to leverage a shared service between them to notify the profile component.
For example an UpdateProfileService with an observable / subject in it. In this case, the profile component can subscribe on it to be notified.
Here is the service:
#Injectable()
export class UpdateProfileService {
profileUpdated:Subject<boolean> = new Subject();
(...)
updateProfile(profile:any) {
return this.http.put('http://...', profile)
.map(res => {
this.profileUpdated.next(true);
return res.json();
});
}
}
and within the profile component:
#Component({
(...)
})
export class ProfileComponent {
constructor(private service:UpdateProfileService) {
this.service.profileUpdated.subscribe(() => {
// Update bound data for profile
});
}
}