carrierwave_readme.md

Recreating versions with :from_version dependency

Imagine you have a version with :from_version:

class MyUploader < CarrierWave::Uploader::Base

  version :thumb do
    process resize_to_fill: [280, 280]
  end

  version :small_thumb, from_version: :thumb do
    process resize_to_fill: [20, 20]
  end

end

In this case, when you call recreate_versions!(:small_thumb), both :small_thumb and :thumb versions will be recreated.