OmniAuth: ArgumentError: неверное число аргументов (1 для 0)

Question

Я использую OmniAuth для входа в систему с Facebook, но когда начинается обратный вызов фазы я получаю эту ошибку:

[2015-01-07T02:26:31.113785 #11509] INFO -- omniauth: (facebook) Request phase initiated. 
127.0.0.1 - - [07/Jan/2015:02:26:31 +0100] "GET /auth/facebook HTTP/1.1" 302 239 0.0097 
I, [2015-01-07T02:26:31.295848 #11509] INFO -- omniauth: (facebook) Callback phase initiated. 
ArgumentError: wrong number of arguments (1 for 0) 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:317:in `get' 
    /home/ciro/workspace/iParty/app.rb:25:in `block in <top (required)>' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:127:in `instance_eval' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:127:in `block in call!' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:126:in `catch' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:126:in `call!' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/cuba-3.3.0/lib/cuba.rb:111:in `call' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:404:in `call_app!' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:362:in `callback_phase' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/omniauth-oauth2-1.2.0/lib/omniauth/strategies/oauth2.rb:77:in `callback_phase' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/omniauth-facebook-1.6.0/lib/omniauth/strategies/facebook.rb:71:in `callback_phase' 
    /home/ciro/.rvm/gems/ruby-2.1.3/gems/omniauth-1.2.2/lib/omniauth/strategy.rb:227:in `callback_call' 

Я использовал Cuba framework (что очень подобно Синатре). Это моя конфигурация:

app.rb

require "cuba" 
require "omniauth-facebook" 

Cuba.use Rack::Session::Cookie, 
    key: ENV['COOKIE_KEY'], 
    secret: ENV['COOKIE_SECRET'] 

Cuba.use OmniAuth::Builder do 
    provider :facebook, ENV['FBK_APP_ID'], ENV['FBK_APP_SECRET'] 
end 

Cuba.define do 
    on get '/auth/facebook/callback' do 
     res.write "Autentication with Facebook was successful!" 
    end 

    on get '/auth/failure' do 
    res.write "Something was wrong with Facebook authentication" 
    end 
end 

Чего не хватает?

Answer 1

Там должен быть один на блок получить определение нескольких маршрутов:

Cuba.define do 
    on get do 
    on '/auth/facebook/callback' do 
     res.write "Autentication with Facebook was successful!" 
    end 

    on '/auth/failure' do 
     res.write "Something was wrong with Facebook authentication" 
    end 
    end 
end