vala

class PaperclipGlobalReprocessor
  def run
    models.each do |model| 
      attachments = model.try(:attachment_definitions).try(:keys)

      next unless attachments

      model.find_each do |resource| 
        attachments.each do |attachment| 
          resource.send(attachment).reprocess! if resource.send(:"#{ attachment }?") 

vala

#!/usr/bin/env ruby
#
# This script allows for parsing every models of your app, looking for string
# and text fields, then replacing every previous hardcoded URL with a new
# URL reflecting your new assets location
#
# Example usage :
#
#   # Replace all URLs targeting an S3 bucket to a locale system URL
#   rake replace_models_assets_url MATCHER="http://s3.amazonaws.com/mybucket/" REPLACEMENT="/system/"