app/uploaders/custom_field_attachment_uploader.rb


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class CustomFieldAttachmentUploader < CarrierWave::Uploader::Base

  storage :file

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  def extension_whitelist
    model.send "#{mounted_as}_extension_whitelist"
  end
end