I have a resource called User and another one called Order.
I want Order to be nested inside Users so I can have these routes:
/users
/users/:id
/users/:id/new
/users/:id/edit
/users/:user_id/orders
/users/:user_id/orders/:id
/users/:user_id/orders/:id/new
/users/:user_id/orders/:id/edit
How can I do that with activeadmin?