1 from django.db import models

     2 

     3 class Foo(models.Model):

     4     name = models.CharField(maxlength=50)

     5 

     6     def __str__(self):

     7         return "Foo %s" % self.name

     8 

     9 class Bar(models.Model):

    10     name = models.CharField(maxlength=50)

    11     normal = models.ForeignKey(Foo, related_name='normal_foo')

    12     fwd = models.ForeignKey("Whiz")

    13     back = models.ForeignKey("Foo")

    14 

    15     def __str__(self):

    16         return "Bar %s" % self.place.name

    17 

    18 class Whiz(models.Model):

    19     name = models.CharField(maxlength = 50)

    20 

    21     def __str__(self):

    22         return "Whiz %s" % self.name

    23 

    24 class Child(models.Model):

    25     parent = models.OneToOneField('Base')

    26     name = models.CharField(maxlength = 50)

    27 

    28     def __str__(self):

    29         return "Child %s" % self.name

    30     

    31 class Base(models.Model):

    32     name = models.CharField(maxlength = 50)

    33 

    34     def __str__(self):

    35         return "Base %s" % self.name

    36 

    37 __test__ = {'API_TESTS':"""

    38 # Regression test for #1661 and #1662: Check that string form referencing of models works, 

    39 # both as pre and post reference, on all RelatedField types.

    40 

    41 >>> f1 = Foo(name="Foo1")

    42 >>> f1.save()

    43 >>> f2 = Foo(name="Foo1")

    44 >>> f2.save()

    45 

    46 >>> w1 = Whiz(name="Whiz1")

    47 >>> w1.save()

    48 

    49 >>> b1 = Bar(name="Bar1", normal=f1, fwd=w1, back=f2)

    50 >>> b1.save()

    51 

    52 >>> b1.normal

    53 <Foo: Foo Foo1>

    54 

    55 >>> b1.fwd

    56 <Whiz: Whiz Whiz1>

    57 

    58 >>> b1.back

    59 <Foo: Foo Foo1>

    60 

    61 >>> base1 = Base(name="Base1")

    62 >>> base1.save()

    63 

    64 >>> child1 = Child(name="Child1", parent=base1)

    65 >>> child1.save()

    66 

    67 >>> child1.parent

    68 <Base: Base Base1>

    69 """}