Rails 3 Render Prawn pdf in ActionMailer

Question

How to render prawn pdf as attachment in ActionMailer? I use delayed_job and don\'t understand, how could I render pdf-file in action mailer (not in controller). What format

Answer 1

You just need to tell Prawn to render the PDF to a string, and then add that as an attachment to the email. See the ActionMailer docs for details on attachments.

Here's an example:

class ReportPdf
  def initialize(report)
    @report = report
  end

  def render
    doc = Prawn::Document.new

    # Draw some stuff...
    doc.draw_text @report.title, :at => [100, 100], :size => 32

    # Return the PDF, rendered to a string
    doc.render
  end
end

class MyPdfMailer < ActionMailer::Base
  def report(report_id, recipient_email)
    report = Report.find(report_id)

    report_pdf_view = ReportPdf.new(report)

    report_pdf_content = report_pdf_view.render()

    attachments['report.pdf'] = {
      mime_type: 'application/pdf',
      content: report_pdf_content
    }
    mail(:to => recipient_email, :subject => "Your report is attached")
  end
end