HTTP Basic Auth for Rack applications - Protect Rails app staging environment with HTTP Basic Auth

basic_auth.rb

MyApp::Application.configure do
  # Restrict access with HTTP Basic Auth for staging environment
  if ENV['STAGING_AUTH']
    config.middleware.use Rack::Auth::Basic do |username, password|
      ENV['STAGING_AUTH'].split(':') == [username, password]
    end
  end
end