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22 lines
592 B
Python
22 lines
592 B
Python
"""
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Mutually referential many-to-one relationships
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Strings can be used instead of model literals to set up "lazy" relations.
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"""
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from django.db import models
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class Parent(models.Model):
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name = models.CharField(max_length=100)
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# Use a simple string for forward declarations.
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bestchild = models.ForeignKey("Child", models.SET_NULL, null=True, related_name="favored_by")
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class Child(models.Model):
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name = models.CharField(max_length=100)
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# You can also explicitly specify the related app.
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parent = models.ForeignKey("mutually_referential.Parent", models.CASCADE)
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