module ActionView::Helpers::CacheHelper

def digest_path_from_template(template) # :nodoc:
  digest = Digestor.digest(name: template.virtual_path, format: template.format, finder: lookup_context, dependencies: view_cache_dependencies)
  if digest.present?
    "#{template.virtual_path}:#{digest}"
  else
    template.virtual_path
  end
end