require 'action_controller/base' require 'action_dispatch/http/mime_types' require 'ezprint/pdf_helper' module EzPrint class Railtie < Rails::Railtie initializer :init_mime_types do Mime::Type.register 'application/pdf', :pdf end initializer :insert_into_action_controller do ActiveSupport.on_load :action_controller do ActionController::Base.send(:include, EzPrint::PdfHelper) end end end end