Missing extension when save image on paperclip

 image = PortfolioFileItem.find(107)  
 img_source = "http://s3.amazonaws.com/test/portfolio_file_items_final/original/1.jpg"
 image.picture_from_url(img_source)
 image.save(false)

image save DONE but missing extensionof image. this is sa开发者_如何学编程mple image name saved: open-uri20110528-6779-fpiust-0.

Please help me solved problem. thanks

---

To add an extension to paperclip add this line after has_attached_file as an option

:path => ":rails_root/public/:attachment/:id/:style/:basename.:extension"

You can customize this path to fit your needs however you must have the .:extension at the end, the :extension is one of many values that can be used for interpolation.

See this blog post for more information.

---

If the actual file does not have an extension originally you can detect extension and add it before saving

  def before_save
    tempfile = data.queued_for_write[:original]
    unless tempfile.nil?
      extension = File.extname(tempfile.original_filename)
      if !extension || extension == ''
        mime = tempfile.content_type
        ext = Rack::Mime::MIME_TYPES.invert[mime]
        self.data.instance_write :file_name, "#{tempfile.original_filename}#{ext}"
      end
    end

    true
  end