angular - 在一个效果中分派(dispatch)多个 Action

Question

我想在一个效果中发送两个 Action 。目前我必须声明两种效果来实现这一点:

// first effect
@Effect()
action1$ = this.actions$
  .ofType(CoreActionTypes.MY_ACTION)
  .map(res => {
    return { type: "ACTION_ONE"}
  })
  .catch(() => Observable.of({
    type: CoreActionTypes.MY_ACTION_FAILED
  }));

// second effect
@Effect()
action2$ = this.actions$
  .ofType(CoreActionTypes.MY_ACTION)
  .map(res => {
    return { type: "ACTION_TWO"}
  })
  .catch(() => Observable.of({
    type: CoreActionTypes.MY_ACTION_FAILED
  }));

是否可能有一个 Action ，通过一个效果成为两个 Action 的来源？

Answer 1

@Effect()
loadInitConfig$ = this.actions$
    .ofType(layout.ActionTypes.LOAD_INIT_CONFIGURATION)
    .map<Action, void>(toPayload)
    .switchMap(() =>
        this.settingsService
            .loadInitConfiguration()
            .mergeMap((data: any) => [
                new layout.LoadInitConfigurationCompleteAction(data.settings),
                new meetup.LoadInitGeolocationCompleteAction(data.geolocation)
            ])
            .catch(error =>
                Observable.of(
                    new layout.LoadInitConfigurationFailAction({
                        error
                    })
                )
            )
    );