Question

我正在按照 ngrx 网站上的教程创建商店/状态，但我无法访问状态属性：

auth.ts

export interface Auth{
    email: string;
    token: string;
    isLoggedIn: boolean;
}

auth.actions.ts

import { createAction, props } from '@ngrx/store';
import {Auth} from '../../models/auth';


export const authenticateUser = createAction('[Login Component] Authtenticate User', props<{payload: Auth}>());
export const logoutUser = createAction('[Navbar Component] Logout User');

auth.reducer.ts

import { Action, createReducer, on } from '@ngrx/store';
import * as AuthActions from '../actions/auth.actions';

export interface State {
  email: string;
  token: string;
  isLoggedIn: boolean;
}

export const initialState: State = {
    email: 'test@test',
    token: '',
    isLoggedIn: false
}

const _authReducer = createReducer(
    initialState,
    on(AuthActions.authenticateUser, (state, { payload }) => ({
        email: payload.email,
        token: payload.token,
        isLoggedIn: payload.isLoggedIn,
    })),
    on(AuthActions.logoutUser, state => ({
        email: '',
        token: '',
        isLoggedIn: false,
    }))
)

export function authReducer(state: State | undefined, action: Action) {
    return _authReducer(state, action);
  }

在我的 app.module.ts 中导入

...
import { StoreModule } from '@ngrx/store';
import {authReducer} from './store/reducers/auth.reducer';

imports: [
    ...
    StoreModule.forRoot({ auth: authReducer }),
  ],

而且我有一个导航栏组件，我想在其中显示用户电子邮件，但是当我尝试在 html 中访问 {{auth.email}} 时出现错误： “标识符‘email’未定义。‘Observable’不包含这样的成员”。导航栏.component.ts

import { Store } from '@ngrx/store';
import { Observable } from 'rxjs';
import { Auth } from './../models/auth';

...

auth: Observable<Auth>;

constructor(private store: Store<{auth :Auth}>) {
    this.auth = store.select('auth');
}

Ngrx 无法访问状态属性？

0 个答案: