mirror of https://github.com/django/django.git
170 lines
4.0 KiB
Python
170 lines
4.0 KiB
Python
from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
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from django.contrib.contenttypes.models import ContentType
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from django.db import models
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class Award(models.Model):
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name = models.CharField(max_length=25)
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object_id = models.PositiveIntegerField()
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content_type = models.ForeignKey(ContentType, models.CASCADE)
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content_object = GenericForeignKey()
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class AwardNote(models.Model):
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award = models.ForeignKey(Award, models.CASCADE)
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note = models.CharField(max_length=100)
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class Person(models.Model):
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name = models.CharField(max_length=25)
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awards = GenericRelation(Award)
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class Book(models.Model):
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pagecount = models.IntegerField()
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owner = models.ForeignKey("Child", models.CASCADE, null=True)
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class Toy(models.Model):
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name = models.CharField(max_length=50)
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class Child(models.Model):
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name = models.CharField(max_length=50)
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toys = models.ManyToManyField(Toy, through="PlayedWith")
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class PlayedWith(models.Model):
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child = models.ForeignKey(Child, models.CASCADE)
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toy = models.ForeignKey(Toy, models.CASCADE)
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date = models.DateField(db_column="date_col")
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class PlayedWithNote(models.Model):
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played = models.ForeignKey(PlayedWith, models.CASCADE)
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note = models.TextField()
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class Contact(models.Model):
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label = models.CharField(max_length=100)
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class Email(Contact):
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email_address = models.EmailField(max_length=100)
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class Researcher(models.Model):
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contacts = models.ManyToManyField(Contact, related_name="research_contacts")
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primary_contact = models.ForeignKey(
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Contact, models.SET_NULL, null=True, related_name="primary_contacts"
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)
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secondary_contact = models.ForeignKey(
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Contact, models.SET_NULL, null=True, related_name="secondary_contacts"
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)
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class Food(models.Model):
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name = models.CharField(max_length=20, unique=True)
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class Eaten(models.Model):
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food = models.ForeignKey(Food, models.CASCADE, to_field="name")
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meal = models.CharField(max_length=20)
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# Models for #15776
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class Policy(models.Model):
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policy_number = models.CharField(max_length=10)
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class Version(models.Model):
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policy = models.ForeignKey(Policy, models.CASCADE)
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class Location(models.Model):
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version = models.ForeignKey(Version, models.SET_NULL, blank=True, null=True)
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class Item(models.Model):
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version = models.ForeignKey(Version, models.CASCADE)
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location = models.ForeignKey(Location, models.SET_NULL, blank=True, null=True)
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location_value = models.ForeignKey(
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Location, models.SET(42), default=1, db_constraint=False, related_name="+"
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)
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# Models for #16128
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class File(models.Model):
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pass
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class Image(File):
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class Meta:
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proxy = True
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class Photo(Image):
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class Meta:
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proxy = True
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class FooImage(models.Model):
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my_image = models.ForeignKey(Image, models.CASCADE)
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class FooFile(models.Model):
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my_file = models.ForeignKey(File, models.CASCADE)
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class FooPhoto(models.Model):
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my_photo = models.ForeignKey(Photo, models.CASCADE)
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class FooFileProxy(FooFile):
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class Meta:
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proxy = True
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class OrgUnit(models.Model):
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name = models.CharField(max_length=64, unique=True)
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class Login(models.Model):
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description = models.CharField(max_length=32)
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orgunit = models.ForeignKey(OrgUnit, models.CASCADE)
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class House(models.Model):
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address = models.CharField(max_length=32)
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class OrderedPerson(models.Model):
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name = models.CharField(max_length=32)
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lives_in = models.ForeignKey(House, models.CASCADE)
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class Meta:
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ordering = ["name"]
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def get_best_toy():
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toy, _ = Toy.objects.get_or_create(name="best")
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return toy
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def get_worst_toy():
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toy, _ = Toy.objects.get_or_create(name="worst")
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return toy
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class Collector(models.Model):
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best_toy = models.ForeignKey(
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Toy, default=get_best_toy, on_delete=models.SET_DEFAULT, related_name="toys"
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)
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worst_toy = models.ForeignKey(
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Toy, models.SET(get_worst_toy), related_name="bad_toys"
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)
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