Rails 5 Routes to CSV

require 'csv'

namespace :routes do
  desc 'Print out defined routes into csv located at tmp/routes.csv'
  task csv: :environment do |task|
    CSV.open('tmp/routes.csv', 'wb') do |csv|
      csv << ['name', 'verb', 'path']
      Rails.application.routes.routes.each do |route|
        csv << [ route.name, route.verb, route.path.spec.to_s ]
      end
    end
  end
end