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from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
from django.contrib.contenttypes.models import ContentType
from django.db import models
class Author(models.Model):
name = models.CharField(max_length=100)
age = models.IntegerField()
friends = models.ManyToManyField("self", blank=True)
class Publisher(models.Model):
name = models.CharField(max_length=255)
num_awards = models.IntegerField()
class ItemTag(models.Model):
tag = models.CharField(max_length=100)
content_type = models.ForeignKey(ContentType, models.CASCADE)
object_id = models.PositiveIntegerField()
content_object = GenericForeignKey("content_type", "object_id")
class Book(models.Model):
isbn = models.CharField(max_length=9)
name = models.CharField(max_length=255)
pages = models.IntegerField()
rating = models.FloatField()
price = models.DecimalField(decimal_places=2, max_digits=6)
authors = models.ManyToManyField(Author)
contact = models.ForeignKey(Author, models.CASCADE, related_name="book_contact_set")
publisher = models.ForeignKey(Publisher, models.CASCADE)
pubdate = models.DateField()
tags = GenericRelation(ItemTag)
class Meta:
ordering = ("name",)
class Store(models.Model):
name = models.CharField(max_length=255)
books = models.ManyToManyField(Book)
original_opening = models.DateTimeField()
friday_night_closing = models.TimeField()
class Entries(models.Model):
EntryID = models.AutoField(primary_key=True, db_column="Entry ID")
Entry = models.CharField(unique=True, max_length=50)
Exclude = models.BooleanField(default=False)
class Clues(models.Model):
ID = models.AutoField(primary_key=True)
EntryID = models.ForeignKey(
Entries, models.CASCADE, verbose_name="Entry", db_column="Entry ID"
)
Clue = models.CharField(max_length=150)
class WithManualPK(models.Model):
# The generic relations regression test needs two different model
# classes with the same PK value, and there are some (external)
# DB backends that don't work nicely when assigning integer to AutoField
# column (MSSQL at least).
id = models.IntegerField(primary_key=True)
class HardbackBook(Book):
weight = models.FloatField()
# Models for ticket #21150
class Alfa(models.Model):
name = models.CharField(max_length=10, null=True)
class Bravo(models.Model):
pass
class Charlie(models.Model):
alfa = models.ForeignKey(Alfa, models.SET_NULL, null=True)
bravo = models.ForeignKey(Bravo, models.SET_NULL, null=True)
class SelfRefFK(models.Model):
name = models.CharField(max_length=50)
parent = models.ForeignKey(
"self", models.SET_NULL, null=True, blank=True, related_name="children"
)
class AuthorProxy(Author):
class Meta:
proxy = True
class Recipe(models.Model):
name = models.CharField(max_length=20)
author = models.ForeignKey(AuthorProxy, models.CASCADE)
tasters = models.ManyToManyField(AuthorProxy, related_name="recipes")
class RecipeProxy(Recipe):
class Meta:
proxy = True
class AuthorUnmanaged(models.Model):
age = models.IntegerField()
class Meta:
db_table = Author._meta.db_table
managed = False
class RecipeTasterUnmanaged(models.Model):
recipe = models.ForeignKey("RecipeUnmanaged", models.CASCADE)
author = models.ForeignKey(
AuthorUnmanaged, models.CASCADE, db_column="authorproxy_id"
)
class Meta:
managed = False
db_table = Recipe.tasters.through._meta.db_table
class RecipeUnmanaged(models.Model):
author = models.ForeignKey(AuthorUnmanaged, models.CASCADE)
tasters = models.ManyToManyField(
AuthorUnmanaged, through=RecipeTasterUnmanaged, related_name="+"
)
class Meta:
managed = False
db_table = Recipe._meta.db_table
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