gistfile1.txt

    my $url  = $self->req->headers->referrer;
    my $path = Mojo::URL->new($url)->path->to_abs_string;

    my $match = Mojolicious::Routes::Match->new(root => $self->app->routes);
    $match->match($self => {method => 'GET', path => $path});
    if ($match->endpoint) {
        my $name = $match->endpoint->name;
        $name =~ s/^(en|da)_//;
        $url = $self->url_for($name);
    }

    $self->redirect_to($url);