require 'active_support' require 'active_support/lazy_load_hooks' require 'active_model' require "active_model/serializers/version" ActiveSupport.on_load(:active_record) do require "active_record/serializers/xml_serializer" end module ActiveModel module Serializers extend ActiveSupport::Autoload eager_autoload do autoload :Xml end end def self.eager_load! super ActiveModel::Serializers.eager_load! end end