94 lines
2.1 KiB
Python
94 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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from django.db import models
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from polymorphic.models import PolymorphicModel
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from polymorphic.showfields import ShowFieldContent, ShowFieldTypeAndContent
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class Project(ShowFieldContent, PolymorphicModel):
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"""Polymorphic model"""
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topic = models.CharField(max_length=30)
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class ArtProject(Project):
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artist = models.CharField(max_length=30)
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class ResearchProject(Project):
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supervisor = models.CharField(max_length=30)
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class UUIDModelA(ShowFieldTypeAndContent, PolymorphicModel):
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"""UUID as primary key example"""
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uuid_primary_key = models.UUIDField(primary_key=True)
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field1 = models.CharField(max_length=10)
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class UUIDModelB(UUIDModelA):
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field2 = models.CharField(max_length=10)
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class UUIDModelC(UUIDModelB):
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field3 = models.CharField(max_length=10)
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class ProxyBase(PolymorphicModel):
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"""Proxy model example - a single table with multiple types."""
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title = models.CharField(max_length=200)
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def __unicode__(self):
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return u"<ProxyBase[type={0}]: {1}>".format(self.polymorphic_ctype, self.title)
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class Meta:
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ordering = ("title",)
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class ProxyA(ProxyBase):
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class Meta:
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proxy = True
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def __unicode__(self):
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return u"<ProxyA: {0}>".format(self.title)
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class ProxyB(ProxyBase):
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class Meta:
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proxy = True
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def __unicode__(self):
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return u"<ProxyB: {0}>".format(self.title)
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# Internals for management command tests
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class TestModelA(ShowFieldTypeAndContent, PolymorphicModel):
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field1 = models.CharField(max_length=10)
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class TestModelB(TestModelA):
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field2 = models.CharField(max_length=10)
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class TestModelC(TestModelB):
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field3 = models.CharField(max_length=10)
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field4 = models.ManyToManyField(TestModelB, related_name="related_c")
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class NormalModelA(models.Model):
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"""Normal Django inheritance, no polymorphic behavior"""
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field1 = models.CharField(max_length=10)
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class NormalModelB(NormalModelA):
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field2 = models.CharField(max_length=10)
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class NormalModelC(NormalModelB):
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field3 = models.CharField(max_length=10)
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