我已成功在当前应用程序中使用@ ngrx / store(也是@ ngrx / effects和@ ngrx / store-devtools)。现在我想制作模块,这将是独立于应用程序其余部分的理想选择。问题是如何在其中使用@ngrx / store? 我可以以某种方式将新的reducer添加到现有的" app"商店?我想避免将模型从模块转移到应用程序并将reducer注册到应用程序中。有人有解决方案吗?示例代码如下:
// App declarations
export const APP_IMPORTS = [
.
.
.
StoreModule.provideStore(reducer),
EffectsModule.run(someEffects),
STORE_DEV_TOOLS_IMPORTS
];
@NgModule({
declarations: [
APP_DECLARATIONS,
AppComponent
],
imports: [
APP_IMPORTS
],
providers: [APP_PROVIDERS],
bootstrap: [AppComponent]
})
export class AppModule {
}
在新模块中:
// Module declaration
@NgModule({
imports: [CommonModule,
FormsModule,
StoreModule.provideStore({ counter: counterReducer }) // <-- how to change this to just add to current store new reducer??
],
exports: [MyTestComponent],
declarations: [MyTestComponent],
})
export class SomeModule {
}
还有人知道如何在devtool上显示@ ngrx / store的名字吗?将它从ngrx-store-some_random_number更改为某个app_name?
非常感谢
答案 0 :(得分:2)
从ngrx4开始,您将商店提供为:StoreModule.forRoot({router: routerReducer})
@NgModule({
imports: [
StoreModule.forRoot({router: routerReducer}),
EffectsModule.forRoot([...]),
...
],
declarations: [],
...
})
export class AppModule {}
然后在您的功能模块中,您可以提供商店StoreModule.forFeature(...)
:
@NgModule({
imports: [
StoreModule.forFeature('feature', featureReducer),
EffectsModule.forFeature([...]),
...
],
declarations: [],
...
})
export class FeatureModule {}
然后feature
状态将存储在state.feature
键下。
使用可以使用选择器一致地访问功能商店:
export const selectFeatureModule = createFeatureSelector<FeatureState>('feature');
export const selectFeatureValue = createSelector(selectFeatureModule ,
(state: FeatureState) => state.someValue);
在要素模块中:Angular组件可以使用/切片状态:
...
constructor(private store: Store<AppState>,) {
this.store.select(selectFeatureValue)
.subscribe(console.log.bind(console));
}
...