Accessing an Array from a service method in Angular and passing it to my main component

Within my api-service.ts, I have an array that holds some data.

 public getData():Observable<any[]>  {

    return  Observable.toString[ObsResult];
  }

Now, in the main component, I am attempting to call the getData() method to render the data in
main.component.html

service.getData().subscribe({result => console.log (result)});

However, I encounter the error message:

TypeError: Cannot read property 'subscribe' of undefined

I suspect the issue lies within this line, but I am unsure about what should be placed here: Observable.toString

javascript arrays angular typescript observable

Answer №1

There are various ways you can tackle this issue.

Approach 1: Utilizing More Native Methods

public fetchInfo(): Observable < any[] > {
  return new Observable(observer => {
    observer.next(InfoResult);
    observer.complete();
  });
}

Approach 2: Implementation Using Angular (rxjs)

public grabData(): Observable < any[] > {
  return of(InfoResult);
}

Answer №2

If you happen to come across some fixed data

   For example: let myData = [6,7,8,9,10];

You could opt for

public receiveData():Observable<any[]>  {

    return  Observable.of(myData);
}

and then simply subscribe to

service.receiveData().subscribe({outcome => console.log (outcome)});

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