diff options
Diffstat (limited to 'tests/m2o_recursive/models.py')
| -rw-r--r-- | tests/m2o_recursive/models.py | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tests/m2o_recursive/models.py b/tests/m2o_recursive/models.py index ac6ca8451d..d62c514a25 100644 --- a/tests/m2o_recursive/models.py +++ b/tests/m2o_recursive/models.py @@ -2,7 +2,7 @@ Relating an object to itself, many-to-one To define a many-to-one relationship between a model and itself, use -``ForeignKey('self')``. +``ForeignKey('self', ...)``. In this example, a ``Category`` is related to itself. That is, each ``Category`` has a parent ``Category``. @@ -17,7 +17,7 @@ from django.utils.encoding import python_2_unicode_compatible @python_2_unicode_compatible class Category(models.Model): name = models.CharField(max_length=20) - parent = models.ForeignKey('self', blank=True, null=True, related_name='child_set') + parent = models.ForeignKey('self', models.SET_NULL, blank=True, null=True, related_name='child_set') def __str__(self): return self.name @@ -26,8 +26,8 @@ class Category(models.Model): @python_2_unicode_compatible class Person(models.Model): full_name = models.CharField(max_length=20) - mother = models.ForeignKey('self', null=True, related_name='mothers_child_set') - father = models.ForeignKey('self', null=True, related_name='fathers_child_set') + mother = models.ForeignKey('self', models.SET_NULL, null=True, related_name='mothers_child_set') + father = models.ForeignKey('self', models.SET_NULL, null=True, related_name='fathers_child_set') def __str__(self): return self.full_name |