Django 1.7中ORM对象值作为模型字段的默认值

Question

The following obviously doesn't work in Django 1.7 due to the way apps are loaded now:

entity = models.ForeignKey(Counterparty, default=Counterparty.objects.get(counterparty_name='A Company Ltd').pk, related_name='entity')

It throws a django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet. error.. Is there a way to achieve the same thing in 1.7?

Answer 1

Seems lazy evaluation does the trick, simply making the fetch an anonymous function that is called at runtime appears to do the trick

entity = models.ForeignKey(Counterparty, default=lambda: Counterparty.objects.get(counterparty_name='A Company Ltd').pk, related_name='entity')

Thank you schneck for the tip!