When a user clicks on empty space in Angular 2, the page will automatically redirect

When I receive a response from the server, I want to redirect to another page. However, this process takes around 60 seconds, so in the meantime, I want to display a spinner. Once the response is received, I should be redirected to the new page. Sounds simple, right?

But here's the issue - the page doesn't automatically redirect when the response is received. Instead, it stays on the same page and only redirects when I click anywhere on the page. It's a bit of a strange situation.

this.optimizationService
      .runOptimization(this.runOptimizationModel)
      .subscribe(optimizationResult => {  // This is the initial service that sends a request to the server.

        this.optimizationService.notificationEvent.subscribe(eventData => {
          console.log(eventData); // This is another external service for notifications where I want to redirect upon receiving a response.
          if (eventData && eventData.length) {
            this._router.navigate([this.optimizationResultScreenURL, 'e1517589-905e-485b-b7ee-7bc6521dcc93']); // This line handles the URL redirecting. When placed after the first service subscription, it works correctly. 
          }
        });
      });

This unusual behavior may be due to the delay in getting a response from the second service after 60 seconds. It's a peculiar situation, with the 60-second delay acting as the culprit.

Answer №1

Would you consider exploring a different approach? (Avoiding excessive nesting of subscribes is recommended)

this.optimizationService
      .runOptimization(this.runOptimizationModel)
      .pipe(
            switchMap(optiResult => this.optimizationService.notificationEvent),
            filter(eventData => eventData && eventData.length),
            tap(eventData => this._router.navigate(/* extract URL data here */))
      )
      .subscribe();

I am not entirely sure about the purpose of the initial request, or how its response is used. However, I suggest utilizing RxJS operators to manage the flow effectively. Hopefully, this suggestion proves helpful.

Answer №2

After implementing this solution, my issue was finally resolved.

By using this.zone.run(() => this.router.navigate(['/path/to/route']));

The problem I encountered was that the Router Navigate function was not activating onInit after an external request. The second subscription relied on the external request for notification.

For more information, you can visit: https://github.com/angular/angular/issues/20112#issuecomment-398060545

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