Question

如何在ActionMailer中将prawn pdf渲染为附件？我使用delayed_job并且不明白，我怎样才能在动作邮件中呈现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 docs。

以下是一个例子：

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

Answer 2

我跟踪了PRAWN的RailsCasts。根据已经说过的内容以及我试图类似地完成的内容，我设置了附件名称，然后创建了PDF。

InvoiceMailer：

 def invoice_email(invoice)
    @invoice = invoice
    @user = @invoice.user
    attachments["#{@invoice.id}.pdf"] = InvoicePdf.new(@invoice, view_context).render
    mail(:to => @invoice.user.email,
         :subject => "Invoice # #{@invoice.id}")
  end

Answer 3

我的解决方案：

render_to_string('invoices/show.pdf', :type => :prawn)

PDF已损坏，因为我没有写邮件功能块，而且多部分邮件不正确。

在ActionMailer中使用Rails 3 Render Prawn pdf

3 个答案: