module DirectoryHelper def tmp_directory(prefix) directory_cache[prefix] ||= begin f = File.join( Rails.root, 'tmp', Time.now.strftime("#{prefix}%Y%m%d%H%M%S") ) FileUtils.mkdir_p(f) unless Dir[f].present? f end end def remove_tmp_directory(prefix) tmp_directory_name = directory_cache[prefix] || '' directory_cache.delete(prefix) FileUtils.rm_rf(tmp_directory_name) if Dir[tmp_directory_name].present? end private def directory_cache @directory_cache ||= {} end end