def clean(self, value):
super(ZAIDField, self).clean(value)
if value in EMPTY_VALUES:
return ''
# strip spaces and dashes
value = value.strip().replace(' ', '').replace('-', '')
match = re.match(id_re, value)
if not match:
raise ValidationError(self.error_messages['invalid'])
g = match.groupdict()
try:
# The year 2000 is conveniently a leapyear.
# This algorithm will break in xx00 years which aren't leap years
# There is no way to guess the century of a ZA ID number
d = date(int(g['yy']) + 2000, int(g['mm']), int(g['dd']))
except ValueError:
raise ValidationError(self.error_messages['invalid'])
if not luhn(value):
raise ValidationError(self.error_messages['invalid'])
return value
def clean(self, value):
value = super(ILIDNumberField, self).clean(value)
if value in EMPTY_VALUES:
return ''
match = id_number_re.match(value)
if not match:
raise ValidationError(self.error_messages['invalid'])
value = match.group('number') + match.group('check')
if not luhn(value):
raise ValidationError(self.error_messages['invalid'])
return value
