How to: use callbacks

How to: Use Callbacks

Callbacks allow you to hook in your own code when a particular CarrierWave event occurs. The following callbacks are available for use in CarrierWave uploaders:

• :cache
• :retrieve_from_cache
• :store
• :retrieve_from_store
• :remove

Example

class MyUploader < CarrierWave::Uploader::Base
  #....
  after :cache, :unlink_original

  def unlink_original(file)
    return unless delete_original_file
    file.delete if version_name.blank?
  end
end