1 """

     2 XX. Model inheritance

     3 

     4 Model inheritance isn't yet supported.

     5 """

     6 

     7 from django.db import models

     8 

     9 class Place(models.Model):

    10     name = models.CharField(maxlength=50)

    11     address = models.CharField(maxlength=80)

    12 

    13     def __str__(self):

    14         return "%s the place" % self.name

    15 

    16 class Restaurant(Place):

    17     serves_hot_dogs = models.BooleanField()

    18     serves_pizza = models.BooleanField()

    19 

    20     def __str__(self):

    21         return "%s the restaurant" % self.name

    22 

    23 class ItalianRestaurant(Restaurant):

    24     serves_gnocchi = models.BooleanField()

    25 

    26     def __str__(self):

    27         return "%s the italian restaurant" % self.name

    28 

    29 __test__ = {'API_TESTS':"""

    30 # Make sure Restaurant has the right fields in the right order.

    31 >>> [f.name for f in Restaurant._meta.fields]

    32 ['id', 'name', 'address', 'serves_hot_dogs', 'serves_pizza']

    33 

    34 # Make sure ItalianRestaurant has the right fields in the right order.

    35 >>> [f.name for f in ItalianRestaurant._meta.fields]

    36 ['id', 'name', 'address', 'serves_hot_dogs', 'serves_pizza', 'serves_gnocchi']

    37 

    38 # Create a couple of Places.

    39 >>> p1 = Place(name='Master Shakes', address='666 W. Jersey')

    40 >>> p1.save()

    41 >>> p2 = Place(name='Ace Hardware', address='1013 N. Ashland')

    42 >>> p2.save()

    43 

    44 # Test constructor for Restaurant.

    45 >>> r = Restaurant(name='Demon Dogs', address='944 W. Fullerton', serves_hot_dogs=True, serves_pizza=False)

    46 >>> r.save()

    47 

    48 # Test the constructor for ItalianRestaurant.

    49 >>> ir = ItalianRestaurant(name='Ristorante Miron', address='1234 W. Elm', serves_hot_dogs=False, serves_pizza=False, serves_gnocchi=True)

    50 >>> ir.save()

    51 

    52 

    53 """}