Embed xml file to a pdf

[HelenaBadaoui]

Hello guys,

I need to attach a XML file within a PDF file to be PDF/A3 compliant.
I am using rails and so far I had no issues to generate my PDF (using Prawn gem) and my XML separately but I do not know how to "combine" them.

Any ideas ?

Cheers

[gettalong]

Tl;dr: Prawn doesn't support it out of the box but you can do it manually.

See #1053, #1063, #877 and https://gist.github.com/fidothe/32613b44a5b6588531d9.

There are probably some other issues/messages in the old prawn Google group regarding file embedding.

[HelenaBadaoui]

Thank you for your response :)
I'm struggling a lot with this issue, even though I tried understanding the following link https://gist.github.com/fidothe/32613b44a5b6588531d9
As you said, I can do it manually, do you know how ? I've been on this issue for the past week and I have no idea how to do it.
Thanks in advance

[SarahOuf]

Hello @HelenaBadaoui, were you able to find a solution to this issue? As I am stuck in the same problem.
Thank you in advance!

[reiz]

I have the same issue. A solution would be highly appreciated :-)

[timokleemann]

@HelenaBadaoui, @SarahOuf and @reiz, you might want to have a look at the prawn-attachment gem.

Inside your Prawn class you can then do something like this:

require "prawn"
require "prawn/attachment"

Prawn::Document.generate("hello.pdf") do
  text "Some PDF content"
  Tempfile.create do |f|
    f.write("Some XML content")
    f.rewind
    attach("data.xml", f.read) # <-- This method is provided by the prawn-attachment gem
  end
end

Use something like Adobe Acrobat Reader then to open the PDF and verify the XML attachment is there. (Unfortunately, Apple's Preview can't show PDF attachments if you're a Mac user.)

[tvdeyen]

prawn-attachment looks promising, but for full E-Rechnung compatibility there seems to be still something missing invopop/prawn-attachment#5

[timokleemann]

We managed to set up full ZUGfERD / XFactur / XRechnung compatibility in our invoicing app based on Ruby on Rails. Feel free to check it out. All invoice PDFs generated with it are fully compliant.