Monkey patch idea to get streaming uploads for carrierwave

carrier_wave_monkey_patch.rb

module CarrierWave
  module Storage
    class S3
      class File

        def store(file)
          content_type ||= file.content_type # this might cause problems if content type changes between read and upload (unlikely)
          connection.put_object(bucket, path, file.open,
                                {
                                    'x-amz-acl' => access_policy.to_s.gsub('_', '-'),
                                    'Content-Type' => content_type
                                }.merge(@uploader.s3_headers)
          )
        end
      end
    end
  end
end


module CarrierWave
  class SanitizedFile

    def open
      File.open(@file)
    end
  end
end