本文介绍了Angular 6/NGRX 组合减速器的处理方法，对大家解决问题具有一定的参考价值
问题描述
我正在使用带有 NgRX 4 的 Angular 6.我想组合多个减速器.
I am using Angular 6 w/ NgRX 4. I have multiple reducers I would like to combine.
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { StoreModule } from '@ngrx/store';
import { EffectsModule } from '@ngrx/effects';
import { StoreDevtoolsModule } from '@ngrx/store-devtools';
import { AppComponent } from './app.component';
import counterEffects from './store/counter/counter.effects';
import reducers from './store/reducers';
@NgModule({
declarations: [AppComponent],
imports: [
BrowserModule,
StoreModule.forRoot(reducers),
EffectsModule.forRoot([counterEffects]),
StoreDevtoolsModule.instrument({
maxAge: 10,
}),
],
providers: [],
bootstrap: [AppComponent],
})
export class AppModule {}
reducers.ts
import { combineReducers } from '@ngrx/store';
import { reducer as counterReducer, key as counterKey } from './counter';
import { reducer as profileReducer, key as profileKey } from './profile';
const appReducer = combineReducers({
[counterKey]: counterReducer,
[profileKey]: profileReducer,
});
export default (state, action) => {
if (action.type === 'REDIRECT_TO_EXTERNAL') {
state = undefined;
}
return appReducer(state, action);
};
我的减速器是标准减速器，没什么特别的.
My reducers are standard reducers, nothing special there.
来自 React/Redux 背景，我会像这样设置多个减速器，但是在 Angular 中，当我尝试从商店中进行选择时，我得到了未定义.当我尝试使用开发工具查看商店时，我看不到任何减速器，状态只是 {}
Coming from a React / Redux background, I would set multiple reducers up like this, however in Angular when I attempt to select from the store I get undefined. When I attempt to view the store using the dev tools, I can see none of my reducers and state is simply {}
如何在 Angular 6/NgRX 4 中设置多个减速器?
How do I setup multiple reducers in Angular 6 / NgRX 4?
推荐答案
import { ActionReducerMap } from '@ngrx/store';
import { reducer as counterReducer, key as counterKey } from './counter';
import { reducer as profileReducer, key as profileKey } from './profile';
export interface IAppState {
[counterKey]: any;
[profileKey]: any;
}
export const reducers: ActionReducerMap<IAppState> = {
[counterKey]: counterReducer,
[profileKey]: profileReducer,
};
这篇关于Angular 6/NGRX 组合减速器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，WP2