Jani, thank you. 2012/4/4 Jani Tiainen <rede...@gmail.com>: > Hi, > > You'ew hitting limitation of Django ORM which prohibits overriding fields. > > https://docs.djangoproject.com/en/1.3/topics/db/models/#field-name-hiding-is-not-permitted > > > 4.4.2012 6:34, shiva kirjoitti: > >> Hello! >> >> In our apps (that use Django 1.2.7) we use following models: >> >> class BaseRegistration(models.Model): >> exhibition = models.ForeignKey(...) >> year = models.IntegerField(...) >> user = models.ForeignKey('auth.User') >> >> class BarcodeRegistration(BaseRegistration): >> class Meta: >> abstract = True >> >> class EventRegistration(BarcodeRegistration): >> event = models.ForeignKey(...) >> >> I append *validate_unique* by *user* and *event* fields in >> EventRegistration class: >> >> class EventRegistration(BarcodeRegistration): >> event = models.ForeignKey(...) >> user = models.ForeignKey('auth.User') >> >> class Meta: >> unique_together = ('event', 'user') >> >> But in django command manage.py validate fails with error: >> >> exhibition.eventregistration: "unique_together" refers to user. This >> is not in the same model as the unique_together statement. >> >> After some "pdb'ing" of django.core.management.validation, >> django.db.models.base, and django.db.models.options I found, that is >> happend because: >> >> In [13]: EventRegistration._meta.get_field('user') in >> EventRegistration._meta.parents.keys()[0]._meta.local_fields >> Out[13]: True >> >> In [14]: EventRegistration._meta.get_field('user') in >> EventRegistration._meta.local_fields >> Out[14]: False >> >> Is it's something wrong with our code? >> >> Thanks >> >> -- >> Shavrin Ivan >> > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > 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. >
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