一个 NGRX 商店,多个 Angular 应用程序

所以我对此有点不以为然。希望你能给我道歉。


我正在尝试将多个 Angular 元素(Web 组件)插入到 Prestashop 模块,即 PHP。由于没有一个包含许多模块的 Angular 应用程序,我无法使用商店将数据从一个元素发送到另一个元素。


我想过创建一个负责创建 NGRX 商店的库,并将其保存到 window.store(例如),因此同一个商店可以被多个独立的角度应用程序使用。这里的问题是我必须在许多 Angular 元素中调用库,所以我在构造函数中注入了不同的存储。我对吗?


例如:


import {

  ActionReducer,

  ActionReducerFactory,

  ActionReducerMap,

  ActionReducerMap,

  ActionsSubject,

  ReducerManager,

  ReducerManagerDispatcher,

  StateObservable,

  Store,

} from '@ngrx/store'

import { Observable } from 'rxjs';


const storeName = 'store'


@Injectable({

  providedIn: 'root'

})

export class StoreSyncService {


  store: any = null


  // option 1 constructor:

  // are we, when including the library in others angular apps, instantiating store over and over?

  constructor(private store: Store) {

     if (window[storeName]) {

      this.store = window[storeName]

    } else{

      window[storeName] = this.store

    }

  }


  // option 2 constructor (please apologise me as I don't know how injection works very well).

  // Any link to clarify this is welcome

  constructor() {

    if (window[storeName]) {

      this.store = window[storeName]

    } else{

      const stateObservable$: StateObservable = new Observable()

      const actionsObserver: ActionsSubject = new ActionsSubject()


      const dispatcher: ReducerManagerDispatcher = new ActionsSubject()

      const initialState = {}

      const reducers: ActionReducerMap<any, any> = {}

      const reducerFactory: ActionReducerFactory<any, any> =  whatever


      const reducerManager: ReducerManager = new ReducerManager(dispatcher, initialState, reducers, reducerFactory)

      this.store = new Store(stateObservable$, actionsObserver, reducerManager)

      window[storeName] = this.store

    }


所以回顾一下,如果我想在多个独立的角度应用程序之间共享状态,你会怎么做?


我尝试使用 localStorage,添加事件以将 NGRX 状态与本地存储中的数据同步,反之亦然,但有时会出现无限循环,有时会出现数据不同步的边缘情况。


感谢您的帮助和理解


慕码人2483693
浏览 90回答 1
1回答

繁星点点滴滴

所以现在,我找到了一种解决方法来避免商店的双重实例化。使用条件注入器。&nbsp; import { Injectable, Injector } from '@angular/core';&nbsp; ...&nbsp; constructor(private injector : Injector) {&nbsp; &nbsp; if (window[storeName]) {&nbsp; &nbsp; &nbsp; this.store = window[storeName]&nbsp; &nbsp; } else{&nbsp; &nbsp; &nbsp; this.store = this.injector.get<Store>(Store);&nbsp; &nbsp; &nbsp; window[storeName] = this.store&nbsp; &nbsp; }&nbsp; }我还没有测试它在独立应用程序之间共享数据。让我们希望它有效。随时欢迎任何建议!
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