export_example.rb

# lib/tasks/export.rake
require 'pathname'

def export(path)
  path = Pathname.new('export' + path)  # prefix a folder to export to to
  path.dirname.mkpath  # creates any intermediate folders
  `curl http://localhost:3000/#{path} > #{path.to_s}`
end

desc "Export pages"
task :export => :environment do
  include Rails.application.routes.url_helpers

  # name the specific routes you'd like exported
  export welcome_path
  export root_path
end