DEV Community

Alireza Razinejad
Alireza Razinejad

Posted on

Logout with RouteGuard and UrlTree in Angular

We all agreed about not manipulating data inside component or better to say presentation layer.

So I decided to put logout logic inside guard, this way I will be able to just call logout route and done!

For this I've configured my authentication module routes like this:

{
    path: 'login',
    component: AuthComponent,
    data: { registering: false }
  },
  {
    path: 'register',
    component: AuthComponent,
    data: { registering: true }
  },
  {
    path: 'logout',
    component: AuthComponent,
    data: { registering: false },
    canActivate: [LogoutGuard]
  }
Enter fullscreen mode Exit fullscreen mode

I love to keep things as simple and low as possible 😁

For log out I've added canActivate field and passed the LogoutGuard, the guards have the ability to return UrlTree. It is awesome, let's see how the guard implemented:

@Injectable()
export class LogoutGuard implements CanActivate {
  constructor(private store: Store, private router: Router) {
  }

  canActivate(): UrlTree {
    this.store.dispatch(logout());
    return this.router.createUrlTree(['auth', 'login']);
  }
}
Enter fullscreen mode Exit fullscreen mode

That's it!

The canActivate method is dispatching logout action from NgRx solution and then returning the URL tree which is created using Router from angular/router library!

After this, all we need, any where in the APP we can just redirect user to auth/logout and expect it work as expected and user will automatically will be redirected to auth/login route.

Thank you for reading 🙏🏽
Hope you liked ☕

Discussion (0)