If you're looking for a way to duplicate the DashboardComponent from the AppComponent, one effective solution is to utilize a service to handle communication between components:
@Injectable({
providedIn: 'root'
})
export class DuplicatorService {
private count = new BehaviorSubject<number>(1);
incrementCount() {
const increment = this.count.value + 1;
this.count.next(increment);
}
get count$() {
return this.count.asObservable();
}
}
By injecting the DuplicatorService into your AppComponent, you can update the count when the 'Duplicate' button is clicked:
// app.component.ts
constructor(private duplicatorService: DuplicatorService) {}
onClick() {
this.duplicatorService.incrementCount();
}
To display the duplicated DashboardComponents and listen for changes in the count, you can create a DashboardShellComponent:
//dashboard-shell.component.ts
@Component({
selector: 'app-dashboard-shell',
template: '<app-dashboard *ngFor="let item of (duplicates$ | async)"></app-dashboard>'
})
export class DashboardShellComponent implements OnInit, OnDestroy {
duplicates$: Observable<number[]>;
destroySubject = new Subject<void>();
constructor(private duplicatorService: DuplicatorService) {}
ngOnInit() {
this.duplicates$ = this.duplicatorService.count$.pipe(
map(count => Array(count)),
takeUntil(this.destroySubject)
);
}
ngOnDestroy() {
// Remember to unsubscribe!
this.destroySubject.next();
this.destroySubject.complete();
}
}
Lastly, update the routing to point 'dashboard' to the shell component in your routing module:
//app.routing.module.ts
{ path: 'dashboard', component: DashboardShellComponent }
This approach provides a clear way to duplicate components while keeping track of count updates. Feel free to explore other methods as well!