def add_field(self, field):
translate = self._handler.locale.translate
wrapper = E.div()
if field.label:
wrapper.append(E.label(translate(field.label.text), FOR(field.id)))
wrapper.append(lxml.html.fromstring(field()))
if field.errors:
error_wrapper = E.ul()
wrapper.append(error_wrapper)
for error in field.errors:
error_wrapper.append(E.li(E.strong(str(error))))
self._element.append(wrapper)
