Saga: Responding to event by issuing multiple commands about cqrs

[tschachten]

Seems like I was using it the wrong way - the following seems to be working for me:

@Injectable()
export class SomeSagas {
    public constructor() {}

    onSomeEvent(events$: EventObservable<any>): Observable<ICommand> {
        return events$.ofType(SomeEvent).pipe(
            map((event: SomeEvent) => {
                return [
                    new SomeCommand(uuid()),
                    new SomeCommand(uuid()),
                ];
            }),
            flatMap(c => c), // this is solving my issue
        );
    }
}

I'd like to suggest to add an example of that case to the example repository for guys like me that have not been working with RxJS before? IMO it's pretty common that you'll need to respond to an event by issuing multiple commands at some point.

[kamilmysliwiec]

Hi @tschachten,
I'm glad that you found a solution :) Feel free to create a PR to the example repository, contributions are always welcome!

[codemile]

Just use a mergeMap next time.

mergeMap((event: SomeEvent) => of(new SomeCommand(uuid()), new SomeCommand(uuid()))),

[LinboLen]

how to get a req/res like event stream ?