@ngrx Effect does not run the second time

Question

I\'ve just started learning about @ngrx/store and @ngrx.effects and have created my first effect in my Angular/Ionic app. It runs ok the first time but if I dispatch the eve

Answer 1

You must move map() and catchError() into swithchMap() as following

@Effect()
public event_response$ = this.action$.pipe(
    ofType(SEND_EVENT_RESPONSE_ACTION),
    switchMap((payload) => {
        return this.myService.eventResponse(payload.eventId,payload.response).pipe(
            map((data: DataType) => new SentEventResponseAction(data)),
            catchError((error) => Observable.of(new ErrorOccurredAction(error)))
        })
    );
 );

Please note that, evetResponse() method inside myService should return an observable in order to use pipe afterward. In case your method inside service returns Promise, you can convert it into an observable by the use of from in the rxjs package as below:

import { from } from 'rxjs';
...
const promise = this.myService.eventResponse(payload.eventId,payload.response);
const observable = from(promise);
return observable.pipe(...

For more and detail description take a look at this link