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"""
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)
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