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