如何与ngrx一起创建或删除多个数据？

Question

与所有“ flux体系结构”（[actions，effects，reducers等...）和rxjs结合在一起，我正在尝试创建或删除多个数据 。

我有以下问题：

1. 如何在后端和内部创建或删除多个数据该州的实体？
2. 我一直在研究，人们说要使用forkJoin，但是怎么样用于助焊剂架构？
3. 如何实时接收这些数据并等待其他请求让他们到达？

这里是我在做什么的一个例子：

后台服务：

create(peoples: Array<IPeople>): Observable<Array<IPeople>> {
        const https = [];
        peoples.forEach((people) => https.push(this.httpClient.post<IPeople>(this.endpoint, people)));
        return forkJoin([]);
    }

EFFECTS

createAll$ = createEffect(() =>
    this.action$.pipe(
        ofType(fromPeopleActions.CREATE),
        mergeMap((action) => {
            return this.backend.create(action.people).pipe(
                map((people) => fromPeopleActions.CREATE_SUCCESS({ people })),
                catchError((error) => of(fromPeopleActions.CREATE_FAIL({ error: this.requestHandler.getError(error) })))
            );
        })
    )
);

减速器：

const peopleReducer = createReducer(
    INIT_STATE,
    on(fromPeopleAction.GET_ALL_SUCCESS, fromPeopleAction.CREATE_SUCCESS, fromPeopleAction.DELETE_SUCCESS, (state, { peoples }) => adapter.addMany(peoples, { ...state, loading: false })),
    on(fromPeopleAction.GET_ALL_FAIL, fromPeopleAction.CREATE_FAIL, fromPeopleAction.DELETE_FAIL, (state, { error }) => ({ ...state, error, loading: false }))
);

CALL

ngOnInit(): void {
    this.peopleDispatchService.getAll();
    this.peopleSelectorsService.loading.subscribe((isLoading) => {
        if (!isLoading) {
            this.peopleSelectorsService.total.subscribe((total) => {
                console.log(total);
                if (total === 0) {
                    this.peopleDispatchService.create([
                        { id: '0', isMain: true, name: 'THIAGO DE BONIS CARVALHO SAAD SAUD', avatar: 'assets/users/thiagobonis.jpg', messages: null },
                        { id: '1', isMain: false, name: 'BILL GATES', avatar: 'assets/users/billgates.jpg', messages: null },
                        { id: '2', isMain: false, name: 'STEVE JOBS', avatar: 'assets/users/stevejobs.jpg', messages: null },
                        { id: '3', isMain: false, name: 'LINUS TORVALDS', avatar: 'assets/users/linustorvalds.jpg', messages: null },
                        { id: '4', isMain: false, name: 'EDSGER DIJKSTRA', avatar: 'assets/users/dijkstra.jpg', messages: null },
                    ])
                } else {
                    this.peopleSelectorsService.allIds.subscribe((ids) => this.peopleDispatchService.delete(ids.toString()));
                }
            });
        }
    });
}

Answer 1

您几乎正确地做到了

create(people: Array<IPeople>): Observable<Array<IPeople>> {
  return forkJoin(
    ...people.map(person => this.httpClient.post<IPeople>(this.endpoint, person)),
  );
}

[fromPeopleAction.DELETE_SUCCESS和addMany也一起听起来很奇怪。我为此添加一个独立的on。

现在创建将引起创建请求。