generate_routing_code

# File railties/lib/rails/generators/rails/controller/controller_generator.rb, line 29
        def generate_routing_code(action)
          depth = regular_class_path.length
          # Create 'namespace' ladder
          # namespace :foo do
          #   namespace :bar do
          namespace_ladder = regular_class_path.each_with_index.map do |ns, i|
            indent("namespace :#{ns} do\n", i * 2)
          end.join

          # Create route
          #     get 'baz/index'
          route = indent(%{get '#{file_name}/#{action}'\n}, depth * 2)

          # Create `end` ladder
          #   end
          # end
          end_ladder = (1..depth).reverse_each.map do |i|
            indent("end\n", i * 2)
          end.join

          # Combine the 3 parts to generate complete route entry
          namespace_ladder + route + end_ladder
        end