ruby-on-rails – 使用paperclip设置docx的内容处理

我试图在s3中添加Content-Disposition到我的docx文件.类似的内容：内容 – 处置：附件;文件名= “filename.docx”.我想这样做是因为IE(< 9)将docx文件作为zip文件下载.经过一些谷歌搜索后,我发现有一个解决方法,通过添加内容处理内容也是如此.我尝试使用before_post_process回调并做了

before_post_process :set_content_disposition

def set_content_disposition
  filename = self.attachment.instance.attachment_file_name
  self.attachment.instance_write(:content_disposition,"attachment; filename="+filename) 
end

但是,它仍然以zip文件的形式下载.有没有办法正确地做到这一点.

has_attached_file :attachment,{
  ...,:s3_headers => lambda { |attachment|
    # pass whatever you want in place of "attachment.name"
    { "Content-Disposition" => "attachment; filename="#{attachment.name}"" }
  },...
}