Get extension in Uploader

Question

How do you get the file extension in a CarrierWave Uploader? I have quite honestly tried everything I can think of. I introspected the crap out of it.

This doesn't work:

def filename
  'filename' + self.extension
end

I'm trying to make custom file names and It's not working.

Answer 1

I had a very similar requirement and I solved it this way:

  def filename
    if original_filename
      @name ||= Digest::MD5.hexdigest(File.dirname(current_path))
      "#{@name}.#{file.extension}"
    end
  end

It works fine.