WickedPDF sending blank pdf as mail attachment

Question

if params[:invoice_id].presence
  @invoice = Invoice.find(params[:invoice_id])
  attachments['invoice.pdf'] = WickedPdf.new.pdf_from_string(
    render_to_string(
      template: 'invoices/service',
      locals: { current_user: }
    )
  )
end

I have attached a PDF from wickedpdf but after sending the attachment it comes as blank white page.

I am trying to send Attachment in Ruby on Rails with ActionMailer with PDF as an attachment.

Does this answer your question? [What is the correct way to render\_to\_string in wicked pdf?](https://stackoverflow.com/questions/15972189/what-is-the-correct-way-to-render-to-string-in-wicked-pdf) — anothermh, Apr 03 '23 at 20:02
Since it is the exact same question you must explain *why* it does not answer your question. — anothermh, Apr 05 '23 at 06:05
Can you share what versions of Rails and Wicked PDF are you using? — caiobm4, Apr 06 '23 at 03:18

score 0 · Answer 1 · answered Apr 06 '23 at 03:37

By looking at the example in the Wicked PDF documentation it looks like you are missing the layout option in the render_to_string method.

I suggest to do something like this:

if params[:invoice_id].presence
  @invoice = Invoice.find(params[:invoice_id])
  attachments['invoice.pdf'] = WickedPdf.new.pdf_from_string(
    render_to_string(
      template: 'invoices/service',
      locals: { current_user: },
      # add this line and change the value with the right pdf layout path
      layout: 'layouts/pdf' 
    )
  )
end

its does not fixed it. i have fixed this issue by sending html from controller. — Roshan Lasiwa, Apr 06 '23 at 06:27

WickedPDF sending blank pdf as mail attachment

1 Answers1