text: class InvoicesMailer < ActionMailer::Base
    default :from => Rails.configuration.sender
    
    def send_invoice(invoice_id, to, subject, message, attach_pdf)
      @invoice = Invoice.find(invoice_id)
      @message = message
      attachments["invoice-#{@invoice.code}.pdf"] = File.read(@invoice.invoice_location) if attach_pdf
      
      mail(:to => to,
           :subject => subject)
    end
  end
  