How to force a nested route to use the same parent route parameter name?

Question

My route scheme needs to add 3 new routes to custom actions in my controller: start, Cancel and Finish.

resources :disputes do
  scope module: :dispute, except: :index do
    resources :conference, shallow: true, shallow_prefix: :dispute do
      put :start
      put :cancel
      put :finish
    end
  end
end

The problem is that instead of using :id is used :dispute_id. To solve this I made the manual addition of each route:

resources :disputes do
  scope module: :dispute, except: :index do
    resources :conference, shallow: true, shallow_prefix: :dispute
  end
end

# REVIEW: Existe uma melhor maneira para fazer isso?
put 'conference/:id/start', to: 'dispute/conference#start'
put 'conference/:id/cancel', to: 'dispute/conference#cancel'
put 'conference/:id/finish', to: 'dispute/conference#finish'

Which in fact did not look elegant. Now, it is possible to solve this without the need to manually write each put?

Answer 1

The solution is simple and is in own documentation of routes. Just add the call to the option on: :member:

resources :disputes do
  scope module: :dispute, except: :index do
    resources :conference, shallow: true, shallow_prefix: :dispute do
      put :start, on: :member
      put :cancel, on: :member
      put :finish, on: :member
    end
  end
end

This will inform Rails that the route is part (member) of the parent.