Angular NGRX错误“;Dispatch需要一个对象,但收到了一个函数。如果你';重新使用createAction函数…”;

Angular NGRX错误“;Dispatch需要一个对象,但收到了一个函数。如果你';重新使用createAction函数…”;,angular,reactive-programming,ngrx,Angular,Reactive Programming,Ngrx,我遵循Youtube上的一个教程,尝试创建自己的项目,但我在浏览器中不断收到一个错误,说Dispatch需要一个对象 我的模型: export interface Football { title: string; embed: string; date: string; url: string; thumbnail: string; } export interface State { footballs: Football[]; isLoading: boolea

我遵循Youtube上的一个教程,尝试创建自己的项目,但我在浏览器中不断收到一个错误,说Dispatch需要一个对象

我的模型:

export interface Football {
  title: string;
  embed: string;
  date: string;
  url: string;
  thumbnail: string;
}
export interface State {
  footballs: Football[];
  isLoading: boolean;
  error: string;
}

export const initialState: State = {
  footballs: null,
  isLoading: false,
  error: '',
};
行动:

export const loadAllSucceeded = createAction('[Football Api] Load All succeeded', props<{footballs: Football[]}>());

export const loadAllFailed = createAction('[Football Api] Load All succeeded', props<{error: string}>());

export const appComponentInitialized = createAction('[App Component] Initialized');

export const loadAllRequested = createAction('[App Component] Load All Requested');
影响:

@Injectable()
export class FootballStoreEffects {

  constructor(private footballService: FootballService, private actions$: Actions) {
  }

  loadAll = createEffect(() =>
    this.actions$.pipe(
    ofType(FootballActions.loadAllRequested),
      switchMap(() =>
    this.footballService.getFootballVideos()
      .pipe(
      map(footballs => FootballActions.loadAllSucceeded({footballs})),
      catchError(error => of(FootballActions.loadAllFailed({error})))
    )))
  );
}
减速器:

const featureReducer = createReducer(
  initialState, on(FootballActions.loadAllRequested, state => ({...state, isLoading: true, error: ''})),
  on(FootballActions.loadAllSucceeded, (state, props) => ({... state, isLoading: false, error: '', footballs: props.footballs})),
  on(FootballActions.loadAllFailed, (state, {error}) => ({... state, isLoading: false, error}) )
);

export function reducer(state: State | undefined, action: Action) {
  return featureReducer(state, action);
}
服务方法:

  getFootballVideos(): Observable<Football[]> {
    return this.http.get<FootballResult>(this.API_BASE_URL).pipe(map(result => result.value));
  }
getFootballVideos():可观察{
返回this.http.get(this.API_BASE_URL).pipe(map(result=>result.value));
}
组成部分:

export class FootballVideosComponent implements OnInit {

  footballs$: Observable<Football[]>;
  error$: Observable<string>;
  isLoading$: Observable<boolean>;

  constructor(private store: Store<State>) { }

  ngOnInit() {
    this.footballs$ = this.store.pipe(select(FootballSelectors.selectFootballList));
    this.error$ = this.store.pipe(select(FootballSelectors.selectFootballError));
    this.isLoading$ = this.store.pipe(select(FootballSelectors.selectFootballIsLoading));

  }

  onRefresh() {
    this.store.dispatch(FootballActions.loadAllRequested);
  }

}
导出类足球视频组件在NIT上实现{
足球$:可观察的;
误差$:可观测;
isLoading$:可观察到;
构造函数(私有存储:存储){}
恩戈尼尼特(){
this.footballs$=this.store.pipe(选择(FootballSelectors.selectfootballslist));
this.error$=this.store.pipe(select(FootballSelectors.selectFootballError));
this.isLoading$=this.store.pipe(选择(FootballSelectors.selectfootballsloading));
}
onRefresh(){
此.存储.发送(要求进行鞋垫安装.装载);
}
}
执行onRefresh()时,我在浏览器中遇到此错误:

错误类型错误: Dispatch需要一个对象,但收到了一个函数。 如果您正在使用createAction函数,请确保调用该函数 在发送操作之前。例如,someAction应该是someAction()。 在actionsObject.next(store.js:159) 在Store.dispatch(Store.js:704) 在FootballVideosComponent.onRefresh(football videos.component.ts:29) at Object.eval[as handleEvent](football videoscomponent.html:3) 在handleEvent(core.js:43993) 在callWithDebugContext(core.js:45632) 在Object.debugHandleEvent[作为handleEvent](core.js:45247) 在dispatchEvent(core.js:29804) 在core.js:42925 在HTMLButtoneElement。(platform browser.js:2668)

尝试添加
()
,如下所示:

onRefresh() {
  this.store.dispatch(FootballActions.loadAllRequested());
}
onRefresh() {
  this.store.dispatch(FootballActions.loadAllRequested());
}