Add possibility to add an attachment to an invoice #345

app/controllers/finance/invoices_controller.rb

@@ -62,6 +62,13 @@ class Finance::InvoicesController < ApplicationController
     redirect_to finance_invoices_url
   end
 
+  def attachment
+    @invoice = Invoice.find(params[:invoice_id])
+    type = MIME::Types[@invoice.attachment_mime].first
+    filename = "invoice_#{@invoice.id}_attachment.#{type.preferred_extension}"
+    send_data(@invoice.attachment_data, :filename => filename, :type => type)
+  end
+
   private
 
   def find_invoice