Rails actionmailer:来自数据库的附件

Question

我正在使用actionmailer在轨道中发送邮件。我想附加多个附件：

def prepare_attachments(languages)
  attachments = {}
  languages.each do |language|
    next unless language.document
    attachments[language.document.filename] = language.document.read
  end
  return attachments
end
def distribution_email(recipient, languages)
  attachments = self.prepare_attachments(languages)
  mail(
      :to => recipient,
      :subject => 'Test'
  )
end

已送达的邮件不包含任何附件。这是有效的：

def distribution_email(recipient, languages)
  attachments['test.pdf'] = File.read("/tmp/test.pdf")
  mail(
      :to => recipient,
      :subject => 'Welcome to My Awesome Site'
  )
end

我做错了什么？

Answer 1

我支持解决方案，不能覆盖附件：

def prepare_attachments(languages)
  attachments = {}
  languages.each do |language|
    next unless language.document
    attachments[language.document.filename] = language.document.read
  end
  return attachments
end
def distribution_email(recipient, languages)
  self.prepare_attachments(languages).each do |filename, content|
    attachments[filename] = content
  end
  mail(
      :to => recipient,
      :subject => 'Test'
  )
end