[Rails] Re: attachment_fu, how to regenerate thumbnails

why don't you just write a migration that loops all of those objects
with the old thumbnail-information and call the method that generates
the thumbnails again.

like this:

MyModel.find_all_with_thumbnails.each(&:generate_thumbnail)

i'd like to add: i don't know your app and i don't use attachment_fu
either. thus, the line above is obviously not working. it's just to
give you an idea.

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