Add this line to your application's Gemfile:

gem "rack-unpoly"

And then execute:

$ bundle

Or install it yourself as:

$ gem install rack-unpoly

Use the official Unpoly gem from Makandra.

require "sinatra/base"
require "sinatra/unpoly"

class App < Sinatra::Base
  register Sinatra::Unpoly

  get "/" do
    if up?
      "Unpoly request!"
    else
      "Not Unpoly :("
    end
  end
end

Use the roda-unpoly gem.

require "rack"
require "rack/unpoly/middleware"

use Rack::Unpoly::Middleware

app = ->(env) {
  if env["rack.unpoly"].up?
    [200, {}, ["Unpoly request!"]]
  else
    [200, {}, ["Not Unpoly :("]]
  end
}

run app

I've chosen not to bundle those assets with the gem as they might be updated more frequently then this library. Most Ruby web libraries outside of Rails are asset-agnostic (for the most part), so it's easier if you bring in your assets as you see fit for your specific needs.

Bug reports and pull requests are welcome on GitHub at https://github.com/adam12/rack-unpoly.

I love pull requests! If you fork this project and modify it, please ping me to see if your changes can be incorporated back into this project.

That said, if your feature idea is nontrivial, you should probably open an issue to discuss it before attempting a pull request.

The gem is available as open source under the terms of the MIT License.