def validate(self):
if len(self.value) != self.length:
raise exceptions.ValidationError('length mismatch in {}'.format(
self.__class__.__name__))
if self.valid_values:
if self.value not in self.valid_values:
raise exceptions.ValidationError('invalid value in {}'.format(
self.__class__.__name__))
def render_to_string(self):
output = ''
for field in self.fields:
output += str(field.render_to_string())
# Check length
if len(output) != self.length:
raise exceptions.ValidationError('length mismatch in {}'.format(
self.__class__.__name__))
return output