mirror of
https://github.com/django/django.git
synced 2024-12-27 11:35:53 +00:00
43920cd32e
git-svn-id: http://code.djangoproject.com/svn/django/trunk@16973 bcc190cf-cafb-0310-a4f2-bffc1f526a37
21 lines
565 B
Python
21 lines
565 B
Python
"""
|
|
24. Mutually referential many-to-one relationships
|
|
|
|
Strings can be used instead of model literals to set up "lazy" relations.
|
|
"""
|
|
|
|
from django.db import models
|
|
|
|
|
|
class Parent(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
|
|
# Use a simple string for forward declarations.
|
|
bestchild = models.ForeignKey("Child", null=True, related_name="favoured_by")
|
|
|
|
class Child(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
|
|
# You can also explicitally specify the related app.
|
|
parent = models.ForeignKey("mutually_referential.Parent")
|