module Doorkeeper::Helpers::Filter

def self.included(base)
  base.extend ClassMethods
  base.send :private, :doorkeeper_token, :doorkeeper_unauthorized_render_options
end

def doorkeeper_token
  methods = Doorkeeper.configuration.access_token_methods
  @token ||= OAuth::Token.authenticate request, *methods
end

def doorkeeper_unauthorized_render_options
  nil
end