from django.db import models from django.contrib.contenttypes import generic from django.contrib.contenttypes.models import ContentType class Link(models.Model): content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey() def __unicode__(self): return "Link to %s id=%s" % (self.content_type, self.object_id) class Place(models.Model): name = models.CharField(max_length=100) links = generic.GenericRelation(Link) def __unicode__(self): return "Place: %s" % self.name class Restaurant(Place): def __unicode__(self): return "Restaurant: %s" % self.name class Address(models.Model): street = models.CharField(max_length=80) city = models.CharField(max_length=50) state = models.CharField(max_length=2) zipcode = models.CharField(max_length=5) content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey() def __unicode__(self): return '%s %s, %s %s' % (self.street, self.city, self.state, self.zipcode) class Person(models.Model): account = models.IntegerField(primary_key=True) name = models.CharField(max_length=128) addresses = generic.GenericRelation(Address) def __unicode__(self): return self.name