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from __future__ import unicode_literals
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Building(models.Model):
name = models.CharField(max_length=10)
def __str__(self):
return "Building: %s" % self.name
@python_2_unicode_compatible
class Device(models.Model):
building = models.ForeignKey('Building', models.CASCADE)
name = models.CharField(max_length=10)
def __str__(self):
return "device '%s' in building %s" % (self.name, self.building)
@python_2_unicode_compatible
class Port(models.Model):
device = models.ForeignKey('Device', models.CASCADE)
port_number = models.CharField(max_length=10)
def __str__(self):
return "%s/%s" % (self.device.name, self.port_number)
@python_2_unicode_compatible
class Connection(models.Model):
start = models.ForeignKey(
Port,
models.CASCADE,
related_name='connection_start',
unique=True,
)
end = models.ForeignKey(
Port,
models.CASCADE,
related_name='connection_end',
unique=True,
)
def __str__(self):
return "%s to %s" % (self.start, self.end)
# Another non-tree hierarchy that exercises code paths similar to the above
# example, but in a slightly different configuration.
class TUser(models.Model):
name = models.CharField(max_length=200)
class Person(models.Model):
user = models.ForeignKey(TUser, models.CASCADE, unique=True)
class Organizer(models.Model):
person = models.ForeignKey(Person, models.CASCADE)
class Student(models.Model):
person = models.ForeignKey(Person, models.CASCADE)
class Class(models.Model):
org = models.ForeignKey(Organizer, models.CASCADE)
class Enrollment(models.Model):
std = models.ForeignKey(Student, models.CASCADE)
cls = models.ForeignKey(Class, models.CASCADE)
# Models for testing bug #8036.
class Country(models.Model):
name = models.CharField(max_length=50)
class State(models.Model):
name = models.CharField(max_length=50)
country = models.ForeignKey(Country, models.CASCADE)
class ClientStatus(models.Model):
name = models.CharField(max_length=50)
class Client(models.Model):
name = models.CharField(max_length=50)
state = models.ForeignKey(State, models.SET_NULL, null=True)
status = models.ForeignKey(ClientStatus, models.CASCADE)
class SpecialClient(Client):
value = models.IntegerField()
# Some model inheritance exercises
@python_2_unicode_compatible
class Parent(models.Model):
name = models.CharField(max_length=10)
def __str__(self):
return self.name
class Child(Parent):
value = models.IntegerField()
@python_2_unicode_compatible
class Item(models.Model):
name = models.CharField(max_length=10)
child = models.ForeignKey(Child, models.SET_NULL, null=True)
def __str__(self):
return self.name
# Models for testing bug #19870.
@python_2_unicode_compatible
class Fowl(models.Model):
name = models.CharField(max_length=10)
def __str__(self):
return self.name
class Hen(Fowl):
pass
class Chick(Fowl):
mother = models.ForeignKey(Hen, models.CASCADE)
class Base(models.Model):
name = models.CharField(max_length=10)
lots_of_text = models.TextField()
class Meta:
abstract = True
class A(Base):
a_field = models.CharField(max_length=10)
class B(Base):
b_field = models.CharField(max_length=10)
class C(Base):
c_a = models.ForeignKey(A, models.CASCADE)
c_b = models.ForeignKey(B, models.CASCADE)
is_published = models.BooleanField(default=False)
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