def extractData(self, fields):
# XXX to review this
cached = self._extracted.get(fields)
if cached is not None:
return cached
data = FieldsValues(self, fields)
errors = Errors()
self._extracted[fields] = (data, errors)
for field in fields:
if not field.available(self):
continue
# Widget extraction and validation
extractor = self.widgetFactory.extractor(field)
if extractor is not None:
value, error = extractor.extract()
if error is None:
error = field.validate(value, self)
if error is not None:
if not IError.providedBy(error):
error = Error(error, extractor.identifier)
errors.append(error)
data[field.identifier] = value
# Generic form validation
errors.extend(self.validateData(fields, data))
if len(errors):
# Add a form level error if not already present
if self.prefix not in errors:
errors.append(
Error(_(u"There were errors.", default=u"There were errors."),
self.prefix))
self.errors = errors
return (data, errors)
def validateData(self, fields, data):
errors = Errors()
for factory in self.dataValidators:
validator = factory(fields, self)
for error in validator.validate(data):
if not IError.providedBy(error):
error = Error(error, self.prefix)
errors.append(error)
return errors
