Angular redirection caused by the NgrX influence

Question

Angular redirection caused by the NgrX influence

How can I achieve the following effect?

  createAssignment$ = createEffect(() =>
    this.action$.pipe(
      ofType(AssignmentActions.createAssignment),
      switchMap((action) =>
        this.assignmentService.createNewAssignment(action.assignmentTo).pipe(
          map((data) => AssignmentActions.createAssignmentSuccess({ createdAssignment: data }),
            catchError((error) => of(error))),
        )
      )
    ));

I want to redirect the user to a new page based on the value from the 'data' object. Is it better to create a new effect for this or should I handle it directly under the action? Has anyone encountered a similar issue before?

angular typescript ngrx

Answer 1

Answer №1

If you want to enhance your code, consider using the tap operator after the map function, which will only be called if the previous operation is successful:

updateUser$ = createEffect(() =>
    this.actions$.pipe(
        ofType(UserActions.updateUser),
        switchMap((action) =>
            this.userService
                .updateUserInfo(action.userInfo)
                .pipe(catchError((error) => of(error)))
        ),
        map((response) => UserActions.updateUserSuccess({ updatedUser: response })),
        tap((response) => { console.log('User updated successfully', response); })
    )
);

Answer 2

If you want to enhance your code, consider using the tap operator after the map function, which will only be called if the previous operation is successful:

updateUser$ = createEffect(() =>
    this.actions$.pipe(
        ofType(UserActions.updateUser),
        switchMap((action) =>
            this.userService
                .updateUserInfo(action.userInfo)
                .pipe(catchError((error) => of(error)))
        ),
        map((response) => UserActions.updateUserSuccess({ updatedUser: response })),
        tap((response) => { console.log('User updated successfully', response); })
    )
);

Answer 3

Answer №2

I suggest implementing a separate effect for redirection purposes. By creating a new Effect, you can encapsulate its logic and ensure reusability. It is not uncommon to listen for multiple actions in an effect.

Inject the Router in your Effects class assignemnts.effects.ts

constructor( ... private readonly router: Router) {}
Your Code https://i.sstatic.net/RyO7d.png

Create a Redirect Effect that listens to your AssignmnetActions.CreateAssignemntSuccess({assignment}); Scenario: This effect will extract the user ID from the assignment and redirect to the /user-details page.

userPageRedirect$ = createEffect(() =>
    this.actions$.pipe(
      ofType(AssignmnetActions.CreateAssignemntSuccess()),
      concatMap((action) => of(action).pipe(withLatestFrom(this.store.pipe(select(getSelectedUserId))))),
      fetch({
        run: (action, userId: number) => {
          this.router.navigate([`/user-details/${userId}`]);
        },
      })
    ));

Answer 4

I suggest implementing a separate effect for redirection purposes. By creating a new Effect, you can encapsulate its logic and ensure reusability. It is not uncommon to listen for multiple actions in an effect.

Inject the Router in your Effects class assignemnts.effects.ts

constructor( ... private readonly router: Router) {}
Your Code https://i.sstatic.net/RyO7d.png

Create a Redirect Effect that listens to your AssignmnetActions.CreateAssignemntSuccess({assignment}); Scenario: This effect will extract the user ID from the assignment and redirect to the /user-details page.

userPageRedirect$ = createEffect(() =>
    this.actions$.pipe(
      ofType(AssignmnetActions.CreateAssignemntSuccess()),
      concatMap((action) => of(action).pipe(withLatestFrom(this.store.pipe(select(getSelectedUserId))))),
      fetch({
        run: (action, userId: number) => {
          this.router.navigate([`/user-details/${userId}`]);
        },
      })
    ));

Angular redirection caused by the NgrX influence

Answer №1

Answer №2

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