Redirect user after log in only if it's on root_path

Question

I have a root_path on my Rails application that is not user-protected i.e. it\'s a simple portal homepage, with a login form.

After the users log in, I\

Answer 1

The login form is on every pages (top/sidebar) or you have a login page?

If is on every pages, you can use request.referrer to know where the user came from.