在ActionMailer中使用Rails 3 Render Prawn pdf

Question

如何在ActionMailer中将prawn pdf渲染为附件？我使用delayed_job并且不明白,我怎么能在动作邮件程序中渲染pdf文件(不在控制器中).我应该使用什么格式？

Answer 1

您只需要告诉Prawn将PDF呈现为字符串,然后将其添加为电子邮件的附件.有关附件的详细信息,请参阅ActionMailer文档.

这是一个例子:

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