Ruby Readmill oAuth methods

gistfile1.rb

get '/auth/readmill' do
  redirect "http://readmill.com/oauth/authorize?response_type=code&client_id=#{settings.readmill_client_id}&redirect_uri=#{settings.readmill_redirect}&scope=non-expiring"
end

get '/callback/readmill' do
  token_params = {
    :grant_type => 'authorization_code',
    :client_id => settings.readmill_client_id,
    :client_secret => settings.readmill_client_secret,
    :redirect_uri => settings.readmill_redirect,
    :code => params[:code],
    :scope => 'non-expiring'
  }
  resp = JSON.parse(RestClient.post("http://readmill.com/oauth/token.json", token_params).to_str) rescue nil
  
  data = {
    :user => fetch_and_parse("http://api.readmill.com/me.json", resp['access_token'])
  }
  
  user = User.first_or_create({ :readmill_id => data[:user]['id'] })
  user.name = data[:user]['username']
  user.access_token = resp['access_token']
  @access_token = resp['access_token']
  user.save!
  
  erb :twitter  
end

great gist, hinke!

If you are looking for a php example. see my gist here: https://gist.github.com/4204947