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Angular redux @effect: Error on retriving the payload


By : user2175649
Date : October 14 2020, 08:10 PM
wish help you to fix your issue You are supposed to use ofType method inside pipe function. For instance:
code :
@Effect({ dispatch: false })
getTasks$: Observable<Task[]> = this.actions.pipe(
 ofType(fromActions.GET_TASKS),
 switchMap(() =>
  this.taskService.GetTasks().pipe(map(data => {
    return data;
  },
    error => console.log(error)
 )))
)


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Redux form Submission error has no effect


By : Munna Mahesh
Date : March 29 2020, 07:55 AM
seems to work fine The submit handler method must return the Promise which throws the SubmissionError to have an effect.
In my example adding return is enough.
code :
handleFormSubmit(formProps) {
   return this.props.dispatch(actions.authUser(formProps.name, formProps.password));
}

How do you map the payload in angular 5 using the HttpClient and redux


By : Bomiheko
Date : March 29 2020, 07:55 AM
it fixes the issue .map is actually the method of Observable which comes from RxJS (a library for reactive-style programming which is used by Angular internally).
Since HttpClient's get method returns an Observable, it means you can apply the map operator to it. The HttpClient (unlike the deprecated Http from HttpModule) extracts the response as JSON for you so the only thing that changes from the snippet you posted is that you should remove res => res.json(). It will break since the received object is deserialized from a JSON string and therefore does not contain the custom function json() that you're trying to invoke.

ngrx effect dispatch action error and null when passing action payload


By : Baraa
Date : March 29 2020, 07:55 AM
Any of those help You should not clutter your effects in this way bad for testing and reuse, try to remove the HTTP call to a service and inject then use it in your effect. lets say you placed it in MyHttpService like so
code :
@Injectable()
export class MyHttpService {
  constructor(private http: HttpClient) {
  }        

  addItem(payload: AddItemPayload): Observable<AddItemSuccessPayload> {  
    return this.http.post<AddItemSuccessPayload>('/api/items/' + payload.id, payload.Data).pipe(
      map((data) => {
        return {item: data.item};
      })
    );
  }
}
 @Injectable()
 export class VendorEffect {

  @Effect() 
  addItem$ = this.actions$.pipe(
    ofType(Vendor.ActionType.ADD_ITEM),
    map((action: Vendor.AddItem) => action.payload),
    exhaustMap((request) =>
      this.myHttpService.addItem(request).pipe(
        map(payload => new Vendor.AddItemSuccess(payload)),
        catchError(err => of(new Vendor.AddItemFail(err)))
      )
    )
  );


      constructor(private actions$: Actions, private myHttpService: MyHttpService) {
      }

    }

Action payload is being used twice (Redux)


By : Dhanshree Jagtap
Date : March 29 2020, 07:55 AM
will help you The problem is caused by Switch case fallthrough since you are not returning from the case statement nor using break. Ideally with redux you need to return the updated state. Your would write
code :
export default ( state = initState, action ) => {

    switch( action.type ) {

        case 'FETCH_MAIN_MENU':
            return {
                ...state, 
                mainMenu: action.payload.data
            }           

        case 'FETCH_USER_MENU':
            return  {
                ...state, 
                userMenu: action.payload.data
            }                   

        default: 
            return state; 

    }

}

Implementing redux in Angular 7 gives error TS2307: Cannot find module 'redux'. error


By : h0feer
Date : March 29 2020, 07:55 AM
will help you I am learning Redux and I am trying to implement it in Angular 7 using ng2-redux. I saw that it was deprecated on the npm page, so I installed it using the suggested npm install @angular-redux/store'. I configured my app.module and it gives me this error: error TS2307: Cannot find module 'redux'. Am I importing it wrong, what may be causing this? I tried searching over the internet but I didn't find anything. Here is my app.module file: , You have to install the package redux as well. Run:
code :
npm install --save redux
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