module SpreeMailChimp class Engine < Rails::Engine engine_name 'spree_mail_chimp' config.autoload_paths += %W(#{config.root}/lib) def self.activate Dir.glob(File.join(File.dirname(__FILE__), "../../app/**/*_decorator*.rb")) do |c| Rails.application.config.cache_classes ? require(c) : load(c) end end config.to_prepare &method(:activate).to_proc end end