Hi all, The question is how to add some validation statement in an upper/abstract class against all instances of subclasses.
here is the model *class UpperAbstract(models.Model):* * * * def verifyUnique(value):* * if value:* * len(UpperAbstract.objects.filter(myuniquefield=value)) > 0:* * raise ValidationError(...)* * * * myuniquefield = CharField(max_length=15, blank=True,validators=[verifyUnique]))* * * * class Meta:* * abstract = True* * * *class Foo(UpperAbstract):* * myFoofield = CharField(max_length=15)* * * *class Bar(UpperAbstract):* * myBarfield = CharField(max_length=15)* Validation and store of any instance of *Foo* or *Bar* is failing as * UpperAbstract* do not have *objects* attribute. I can imagine why but my question is then how to achieve this type of validation ? PS : my first goal was to be able to define field as 'unique if not None'. thank in advance Regards manu -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/YnDGsZ-wuhwJ. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
