mirror of https://github.com/django/django.git
138 lines
3.8 KiB
Python
138 lines
3.8 KiB
Python
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
|