module Concerns::SendOrderPdf extend ActiveSupport::Concern protected def send_order_pdf order, document klass = case document when 'groups' then OrderByGroups when 'articles' then OrderByArticles when 'fax' then OrderFax when 'matrix' then OrderMatrix end pdf = klass.new order send_data pdf.to_pdf, filename: pdf.filename, type: 'application/pdf' end end