Solve of cross-domain ajax requests

README.md

Cross-origin resource sharing

• Use rack-cors
• Add it to middleware
• Adjust permissions if you want
• May the force be with you

config_application.rb

# Add it to config/application.rb

module YourApplicationName
  class Application < Rails::Application
    config.middleware.use Rack::Cors do
      # Allow everything to everyone
      # Instead in block `allow` you can use constraints
      # to achieve some security.
      # More on this options here: https://github.com/cyu/rack-cors
      allow do
        origins '*'
        resource '*',
                 :methods => [:get, :post, :put, :delete, :options],
                 :headers => :any
      end
    end
  end
end

Gemfile

# Add it to Gemfile
gem 'rack-cors', :require => 'rack/cors'