diff -r 5ff1fc726848 -r c6bca38c1cbf parts/django/tests/regressiontests/select_related_regress/models.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parts/django/tests/regressiontests/select_related_regress/models.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,86 @@
+from django.db import models
+
+class Building(models.Model):
+    name = models.CharField(max_length=10)
+
+    def __unicode__(self):
+        return u"Building: %s" % self.name
+
+class Device(models.Model):
+    building = models.ForeignKey('Building')
+    name = models.CharField(max_length=10)
+
+    def __unicode__(self):
+        return u"device '%s' in building %s" % (self.name, self.building)
+
+class Port(models.Model):
+    device = models.ForeignKey('Device')
+    port_number = models.CharField(max_length=10)
+
+    def __unicode__(self):
+        return u"%s/%s" % (self.device.name, self.port_number)
+
+class Connection(models.Model):
+    start = models.ForeignKey(Port, related_name='connection_start',
+            unique=True)
+    end = models.ForeignKey(Port, related_name='connection_end', unique=True)
+
+    def __unicode__(self):
+        return u"%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, unique=True)
+
+class Organizer(models.Model):
+    person = models.ForeignKey(Person)
+
+class Student(models.Model):
+    person = models.ForeignKey(Person)
+
+class Class(models.Model):
+    org = models.ForeignKey(Organizer)
+
+class Enrollment(models.Model):
+    std = models.ForeignKey(Student)
+    cls = models.ForeignKey(Class)
+
+# 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)
+
+class ClientStatus(models.Model):
+    name = models.CharField(max_length=50)
+
+class Client(models.Model):
+    name = models.CharField(max_length=50)
+    state = models.ForeignKey(State, null=True)
+    status = models.ForeignKey(ClientStatus)
+
+class SpecialClient(Client):
+    value = models.IntegerField()
+
+# Some model inheritance exercises
+class Parent(models.Model):
+    name = models.CharField(max_length=10)
+
+    def __unicode__(self):
+        return self.name
+
+class Child(Parent):
+    value = models.IntegerField()
+
+class Item(models.Model):
+    name = models.CharField(max_length=10)
+    child = models.ForeignKey(Child, null=True)
+
+    def __unicode__(self):
+        return self.name