Rails Cors

gistfile1.txt

1. install rack-cors gem (https://github.com/cyu/rack-cors)

gem 'rack-cors', :require => 'rack/cors'

2. add to application.rb


    config.middleware.insert_before "Rack::Lock", "Rack::Cors", :debug => true, :logger => Rails.logger do
      allow do
        origins '*'

        resource '/cors',
                 :headers => :any,
                 :methods => [:post],
                 :credentials => true,
                 :max_age => 0

        resource '*',
                 :headers => :any,
                 :methods => [:get, :post, :delete, :put, :options],
                 :max_age => 0
      end
    end