Patch devise authenticatable

application.rb

# config/application.rb

module MyApp
  class Application < Rails::Application
    require 'devise/authenticatable'
  end
end

authenticatable.rb

# lib/devise/authenticatble.rb

# Monkeypatch devise to accept a raw token without Base64 encoding and with the
# identifier 'token'.

module Devise
  module Strategies
    class Authenticatable < Base
      private

     # Helper to decode credentials from HTTP.
      def decode_credentials
        case request.authorization
        when /^Basic (.*)/mi
          ActiveSupport::Base64.decode64($1).split(/:/, 2)
        when /^Token (\w*)/mi
          [$1, '']
        else
          []
        end
      end
    end
  end
end