/tests/regressiontests/null_queries/models.py

 1from django.db import models
 2
 3class Poll(models.Model):
 4    question = models.CharField(max_length=200)
 5
 6    def __unicode__(self):
 7        return u"Q: %s " % self.question
 8
 9class Choice(models.Model):
10    poll = models.ForeignKey(Poll)
11    choice = models.CharField(max_length=200)
12
13    def __unicode__(self):
14        return u"Choice: %s in poll %s" % (self.choice, self.poll)
15
16# A set of models with an inner one pointing to two outer ones.
17class OuterA(models.Model):
18    pass
19
20class OuterB(models.Model):
21    data = models.CharField(max_length=10)
22
23class Inner(models.Model):
24    first = models.ForeignKey(OuterA)
25    second = models.ForeignKey(OuterB, null=True)