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70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
"""Models for test_natural.py"""
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import uuid
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from django.db import models
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class NaturalKeyAnchorManager(models.Manager):
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def get_by_natural_key(self, data):
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return self.get(data=data)
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class NaturalKeyAnchor(models.Model):
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data = models.CharField(max_length=100, unique=True)
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title = models.CharField(max_length=100, null=True)
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objects = NaturalKeyAnchorManager()
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def natural_key(self):
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return (self.data,)
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class FKDataNaturalKey(models.Model):
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data = models.ForeignKey(NaturalKeyAnchor, models.SET_NULL, null=True)
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class NaturalKeyThing(models.Model):
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key = models.CharField(max_length=100, unique=True)
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other_thing = models.ForeignKey('NaturalKeyThing', on_delete=models.CASCADE, null=True)
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other_things = models.ManyToManyField('NaturalKeyThing', related_name='thing_m2m_set')
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class Manager(models.Manager):
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def get_by_natural_key(self, key):
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return self.get(key=key)
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objects = Manager()
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def natural_key(self):
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return (self.key,)
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def __str__(self):
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return self.key
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class NaturalPKWithDefault(models.Model):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(max_length=100, unique=True)
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class Manager(models.Manager):
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def get_by_natural_key(self, name):
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return self.get(name=name)
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objects = Manager()
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def natural_key(self):
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return (self.name,)
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class FKAsPKNoNaturalKeyManager(models.Manager):
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def get_by_natural_key(self, *args, **kwargs):
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return super().get_by_natural_key(*args, **kwargs)
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class FKAsPKNoNaturalKey(models.Model):
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pk_fk = models.ForeignKey(NaturalKeyAnchor, on_delete=models.CASCADE, primary_key=True)
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objects = FKAsPKNoNaturalKeyManager()
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def natural_key(self):
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raise NotImplementedError('This method was not expected to be called.')
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