->route will create a new route object, which has a method ->to that sets some attributes in the object.
in reply to Re^3: Mojo 0.7 released (Perl on Rails in 150 lines of code)
in thread Mojo 0.7 released (Perl on Rails in 150 lines of code)
There is no hidden magic and they should not touch parent or child routes, but default values (and captures) will be forwarded to child routes when matching a path.
This would be a nested route example where defaults and captures get forwarded. (controller => 'bar' in this case)
my $x = $r->route('/foo')->to(controller => 'bar');
$x->route('/:action')->to(action => 'test');