Reprocessing images of different versions in Carrierwave

Question

Using Carrierwave, I created 3 versions of an avatar - an original, a small_thumb and a large_thumb using the following lines:

process :resize_to_limit => [40         


        

Answer 1

This HowTo was most helpful for me (even if I don't use fog):

https://github.com/carrierwaveuploader/carrierwave/wiki/How-to:-Recreate-and-reprocess-your-files-stored-on-fog

I added a reprocess method on my model and then called it in for each loop in my rake task:

  def reprocess
    begin
      self.process_photo_upload = true
      self.photo.cache_stored_file!
      self.photo.retrieve_from_cache!(photo.cache_name)
      self.photo.recreate_versions!
      self.save!
    rescue => e
      STDERR.puts  "ERROR: MyModel: #{id} -> #{e.to_s}"
    end
  end

Rake:

task :reprocess_photos => :environment do MyModel.all.each{|mm| mm.reprocess} end

PS: Rails 4.2