Django rest framework & model validation
This works for me:
class ZipCodeValidator(RegexValidator): regex = r'^[0-9]{5}$' message = 'Invalid ZipCode.'class MyModel(models.Model): zipcode = models.CharField(max_length=5, blank=True, validators=[ZipCodeValidator()])class MyModelSerializer(serializers.ModelSerializer): class Meta: model = MyModel>>> s1 = MyModelSerializer(data={'zipcode': '34234'})>>> s1.is_valid()True>>> s2 = MyModelSerializer(data={'zipcode': 'f3434'})>>> s2.is_valid()False>>> s2.errors{'zipcode': [u'Invalid ZipCode.']}
Actually, I think the first solution you proposed @astrognocci, even if it seems quite verbous, is a good solution for Django REST Framekork v3.0 +,
Indeed, .full_clean() method is not called anymore in ModelSerializer validation process, as explained in this post
So writing custom class validators - that can be used in Model and ModelSerializer - seems a relevant option for DRY concerns, and consistence.