Can you please guide me on how to effectively utilize concatMap with getPrices() and getDetails()?
export class HistoricalPricesComponent implements OnInit, OnDestroy {
private unsubscribe$ = new Subject < void > ();
infoTitle: string = "";
lines: HistoryPoint[] = [];
model: Currency = new Currency();
svm: string;
constructor(
private location: Location,
private service: HistoricalPricesService,
private activatedRoute: ActivatedRoute
) {}
ngOnInit(): void {
let svm: string | null;
svm = this.activatedRoute.snapshot.paramMap.get('svm');
if (!svm) {
this.goBack();
return;
}
this.svm = svm;
this.getPrices();
this.getDetails(svm)
}
ngOnDestroy(): void {
this.unsubscribe$.next();
this.unsubscribe$.complete();
}
getPrices(): void {
this.service.getInstrumentHistoryEquities(this.svm, this.model).pipe(
takeUntil(this.unsubscribe$)
).subscribe(res => {
if (res.RETURNCODE === ApiResponseCodeEnum.Ok) {
if (res.HISTO.POINT.length > 0) {
this.lines = res.HISTO.POINT.reverse();
}
}
});
}
getDetails(svm: string): void {
this.service.getInstrumentInfo(svm).pipe(
takeUntil(this.unsubscribe$)
).subscribe(res => {
if (res.RETURNCODE === ApiResponseCodeEnum.Ok) {
this.infoTitle += " " + res.ADVTITRE.BASIQUETITRE.LABEL + " (" + res.ADVTITRE.BASIQUETITRE.PLACELABEL + ")";
}
});
}
goBack(): void {
this.location.back();
}
}
I attempted to reference this page
However, I am unsure about where to begin?
The example provided does not clarify on how to implement this effectively?