What is the difference between StoreModule.forRoot() and StoreModule.forFeature()

angular ngrx-store ngrx-store-4.0
Shanmugam M picture Shanmugam M · Sep 21, 2017 · Viewed 28k times · Source

Recently ngrx store changed the way to register the store variables in an angular application.

What is the difference between StoreModule.forRoot() and StoreModule.forFeature()

Do we need to register both to make the application work?

Answer

dee zg picture dee zg · Sep 21, 2017

Its used with lazy loaded reducers. When you have (lazy loaded) feature modules and you want to register reducers within that module, then you use forFeature. Otherwise, in your AppModule you use forRoot.

Related questions

NullInjectorError: No provider for ReducerManager

I am using the new ngrx 5. This is the file that holds the reducers and the featureSelector: import AppState from '../interfaces/app.state' import { ActionReducerMap, createFeatureSelector } from '@ngrx/store' import { partnerReducer } from './partner.reducer' export const reducers: …

Read More
Error: No Provider for Store! in @ngrx 4.x

When migrating my project from @ngrx 2.x to 4.1.0, I encountered the error message NullInjectorError: No provider for Store! The store was imported as shown in the docs: import { StoreModule as NgRxStoreModule } from '@ngrx/store'; @NgModule({ imports: [ NgRxStoreModule.forRoot(reducerMap, { …

Read More
Property 'take' does not exist on type 'Store<State>' ngrx/store

I'm trying to use the property 'take' when selecting a state in my feature but I'm getting the error Property 'take' does not exist on type 'Store<State>. Please, anyone has a clue of what is going on? …

Read More