mirror of https://github.com/django/django.git
24 lines
606 B
Python
24 lines
606 B
Python
"""
|
|
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", models.SET_NULL, null=True, related_name="favored_by"
|
|
)
|
|
|
|
|
|
class Child(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
|
|
# You can also explicitly specify the related app.
|
|
parent = models.ForeignKey("mutually_referential.Parent", models.CASCADE)
|