my $foo = $app->routes->under('/bar')->to(cb => sub {
    return 1;
  });

  $foo->get('/success')->to(cb => sub {
    my $self = shift;
    # some code
    # some code
        if( $self->is_mobile ){
          return $self->render( json => { error => 'Not found' } );
        }
        $self->redirect_to('foo_fail');

  })->name('foo_success');