from __future__ import unicode_literals from django.db import models from django.utils.encoding import python_2_unicode_compatible @python_2_unicode_compatible class Place(models.Model): name = models.CharField(max_length=50) address = models.CharField(max_length=80) def __str__(self): return "%s the place" % self.name @python_2_unicode_compatible class Restaurant(models.Model): place = models.OneToOneField(Place) serves_hot_dogs = models.BooleanField(default=False) serves_pizza = models.BooleanField(default=False) def __str__(self): return "%s the restaurant" % self.place.name @python_2_unicode_compatible class Bar(models.Model): place = models.OneToOneField(Place) serves_cocktails = models.BooleanField(default=True) def __str__(self): return "%s the bar" % self.place.name class UndergroundBar(models.Model): place = models.OneToOneField(Place, null=True) serves_cocktails = models.BooleanField(default=True) @python_2_unicode_compatible class Favorites(models.Model): name = models.CharField(max_length=50) restaurants = models.ManyToManyField(Restaurant) def __str__(self): return "Favorites for %s" % self.name class Target(models.Model): pass class Pointer(models.Model): other = models.OneToOneField(Target, primary_key=True) class Pointer2(models.Model): other = models.OneToOneField(Target, related_name='second_pointer') class HiddenPointer(models.Model): target = models.OneToOneField(Target, related_name='hidden+')