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
1 回答
繁星点点滴滴
TA贡献1803条经验 获得超3个赞
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。
import { Injectable, Injector } from '@angular/core';
...
constructor(private injector : Injector) {
if (window[storeName]) {
this.store = window[storeName]
} else{
this.store = this.injector.get<Store>(Store);
window[storeName] = this.store
}
}
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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