Just assign the existing attachment to another record:
new_photo = Photo.new
new_photo.image = old_photo.image
Paperclip will duplicate the file when saving.
To use this in forms, pimp your attachment container like this:
class Photo < ActiveRecord::Base
has_attached_file :image
attr_accessor :copy_of
def image_url
if copy_of
copy_of.url
else
image.url
end
end
end
And in the controller do:
new_photo = Photo.new(:copy_of => old_photo)
Posted by Tobias Kraze to makandra dev (2010-08-24 17:30)