@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

It sounds like an error is occurring. In that situation, the action in the observable returned by catch will be emitted into the effect's stream and the effect will then complete - which will prevent the effect from running after the error action is emitted.

Move the map and the catch into the switchMap:

@Effect() event_response$ = this.action$
  .ofType(SEND_EVENT_RESPONSE_ACTION)
  .map(toPayload)
  .switchMap((payload) => this.myService
    .eventResponse(payload.eventId, payload.response)
    .map(data => new SentEventResponseAction(data))
    .catch((error) => Observable.of(new ErrorOccurredAction(error)))
);

Composing the catch within the switchMap will prevent the effect from completing if an error occurs.