Grape Rake (routes)

grape.rake

namespace :grape do
  desc "Condensed API Routes"
  task :routes => :environment do
    mapped_prefix = '' # where mounted in routes.rb 
    format = "%46s  %3s %7s %50s %12s:  %s"
    API.routes.each do |grape_route|
      info = grape_route.instance_variable_get :@options
      puts format % [
          info[:description] ? info[:description][0..45] : '',
          info[:version],
          info[:method],
          mapped_prefix + info[:path],
          '# params: ' + info[:params].length.to_s,
          info[:params].first.inspect
      ]
      if info[:params].length > 1
        info[:params].each_with_index do |param_info, index|
          next if index == 0
          puts format % ['','','','','',param_info.inspect]
        end
      end
    end
  end
end