def get_prep_value(self, value): if not value: return None return text_type(self.to_python(value))
def to_representation(self, value): if value is None: return value return text_type(value)
def get_prep_value(self, value): if not value: return None return text_type(self.to_python(value))
def to_representation(self, value): if value is None: return value return text_type(value)