# File lib/dragonfly/data_storage/file_data_store.rb, line 61 def url_for(relative_path, opts={}) if server_root.nil? raise NotConfigured, "you need to configure server_root for #{self.class.name} in order to form urls" else _, __, path = absolute(relative_path).partition(server_root) if path.empty? raise UnableToFormUrl, "couldn't form url for uid #{relative_path.inspect} with root_path #{root_path.inspect} and server_root #{server_root.inspect}" else path end end end