vespertilian

  @Effect()
  selectAndLoadStore$: Observable<Action> = this.actions$
    .ofType(storeActions.SELECT_AND_LOAD_STORE)
    .withLatestFrom(this.store.select(ngrx.storeState))
    .map(([action, storeState]) => [action.payload, storeState])
    .switchMap(([storeName, storeState]) => {
      const existsInStore = Boolean(storeState.urlNameMap[storeName]);
      return Observable.if(
        () => existsInStore,
        Observable.of(new storeActions.SetSelectedStore(storeName)),

EQuimper

watchman watch-del-all && rm -rf node_modules/ && yarn cache clean && yarn install && yarn start -- --reset-cache

peterbsmyth

Making chained API Calls using @ngrx/Effects

Purpose

This recipe is useful for cooking up chained API calls as a result of a single action.

Description

In the below example, a single action called POST_REPO is dispatched and it's intention is to create a new repostiory on GitHub then update the README with new data after it is created.
For this to happen there are 4 API calls necessary to the GitHub API:

1. POST a new repostiry
2. GET the master branch of the new repository
3. GET the files on the master branch

praveenpuglia

@Effect({dispatch: false})
entityCreationSuccess$: Observable<Action> = this.actions$.pipe(
  ofType(UserActions.CREATE_USER_SUCCESS, PostActions.CREATE_POST_SUCCESS),
  tap(action => {
    this.router.navigate(['../'], {relativeTo: this.route})
  })
);