gistfile1.rb

# sample to clone attachement_fu object.

class Foo < ActiveRecord::Base
  has_attachment :storage => :file_system, :path_prefix => 'assets/foo'

  # create clone, but thumbnails are not cloned.
  def create_clone
    returning clone do |c|
      c.temp_paths.unshift create_temp_file
    end
  end
end