paperclip + ActionMailer - 添加附件？

Question

我有一个回形针文件,我想添加为我的电子邮件的附件....

class UserMailer <ActionMailer :: Base def XXXXXX_notification(record)@record = record

  attachments ??? How to add a paperclip file?

  mail( :to => "#{record.email}", 
        :subject => "XXXXXXXX"
        )
end

通过谷歌似乎没有任何关于这个话题,如果你有什么想法,我很想听听:)

谢谢

UPDATE

  @comment.attachments.each do |a|
    tempfile = File.new("#{Rails.root.to_s}/tmp/#{a.attachment_file_name}", "w")
    tempfile << open(a.authenticated_url())
    tempfile.puts
    attachments[a.attachment_file_name] = File.read("#{Rails.root.to_s}/tmp/#{a.attachment_file_name}")
    # Delete it tempfile
    #File.delete("#{Rails.root.to_s}/tmp/#{a.filename}")
  end

Answer 1

它已经得到了回答,但我只想分享一种略有不同的方式:

这是我的模特报告.我正在使用Paperclip.

class Report < ActiveRecord::Base
  has_attached_file :pdf_file
  ...
end

这是我的邮件ReportMailer

class ReportMailer < ActionMailer::Base
  def monthly_report_email(emails, report)
    attachments[report.pdf_file_file_name] = File.read(report.pdf_file.path)
    mail(:to => emails, :subject => 'monthly report')
  end
end

Answer 2

来自 Ruby on Rails 指南（只能通过Bing访问）：

http://guides.rubyonrails.org/action_mailer_basics.html#sending-emails-with-attachments

剩下的就是将附件（如果在 S3 中）下载到文件对象或访问本地存储的附件。尝试使用open-uri。