class Avo::ApplicationController

def eager_load_files(resource, query)
  if resource.attached_file_fields.present?
    resource.attached_file_fields.map do |field|
      attachment = case field.class.to_s
      when "Avo::Fields::FileField"
        "attachment"
      when "Avo::Fields::FilesField"
        "attachments"
      else
        "attachment"
      end
      return query.eager_load "#{field.id}_#{attachment}": :blob
    end
  end
  query
end