gistfile1.rb

# routes.rb
resources :committees, as: :workrooms, path: :workrooms do
  resources :meetings, concerns: :bookable
end
# Generates
# workroom_meeting_book GET    /workrooms/:workroom_id/meetings/:meeting_id/books/:id(

polymorphic_path([@workroom, @meeting, @book])

# But since @workroom is really a Committee model
# It's generating: committee_meeting_book_path :(

Fixed it by changing the route to this:
resources :workrooms, as: :committees