config.ru

# This file is used by Rack-based servers to start the application.

require ::File.expand_path('../config/environment',  __FILE__)

require ::File.expand_path('../lib/devise_basic_auth_fix',  __FILE__)
use DeviseBasicAuthFix

run MyApp::Application

devise_basic_auth_fix.rb

##
# Rack middleware for removing basic auth headers from requests
# see http://github.com/plataformatec/devise/issues/issue/178 for an explanation of why and when this is needed...
#
# === Examples:
#
#  use DeviseBasicAuthFix
#
#

class DeviseBasicAuthFix

  def initialize(app)
    @app = app
  end

  def call(env)
    env['HTTP_AUTHORIZATION'] = nil
    @app.call(env)
  end

end