| """ |
| 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") |
