mirror of
https://github.com/django/django.git
synced 2024-12-25 02:26:12 +00:00
288 lines
7.8 KiB
Python
288 lines
7.8 KiB
Python
import uuid
|
|
|
|
from django.contrib.contenttypes.fields import (
|
|
GenericForeignKey, GenericRelation,
|
|
)
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.db import models
|
|
from django.utils.encoding import python_2_unicode_compatible
|
|
|
|
|
|
# Basic tests
|
|
|
|
@python_2_unicode_compatible
|
|
class Author(models.Model):
|
|
name = models.CharField(max_length=50, unique=True)
|
|
first_book = models.ForeignKey('Book', models.CASCADE, related_name='first_time_authors')
|
|
favorite_authors = models.ManyToManyField(
|
|
'self', through='FavoriteAuthors', symmetrical=False, related_name='favors_me')
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class AuthorWithAge(Author):
|
|
author = models.OneToOneField(Author, models.CASCADE, parent_link=True)
|
|
age = models.IntegerField()
|
|
|
|
|
|
class FavoriteAuthors(models.Model):
|
|
author = models.ForeignKey(Author, models.CASCADE, to_field='name', related_name='i_like')
|
|
likes_author = models.ForeignKey(Author, models.CASCADE, to_field='name', related_name='likes_me')
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class AuthorAddress(models.Model):
|
|
author = models.ForeignKey(Author, models.CASCADE, to_field='name', related_name='addresses')
|
|
address = models.TextField()
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
def __str__(self):
|
|
return self.address
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Book(models.Model):
|
|
title = models.CharField(max_length=255)
|
|
authors = models.ManyToManyField(Author, related_name='books')
|
|
|
|
def __str__(self):
|
|
return self.title
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class BookWithYear(Book):
|
|
book = models.OneToOneField(Book, models.CASCADE, parent_link=True)
|
|
published_year = models.IntegerField()
|
|
aged_authors = models.ManyToManyField(
|
|
AuthorWithAge, related_name='books_with_year')
|
|
|
|
|
|
class Bio(models.Model):
|
|
author = models.OneToOneField(Author, models.CASCADE)
|
|
books = models.ManyToManyField(Book, blank=True)
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Reader(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
books_read = models.ManyToManyField(Book, related_name='read_by')
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class BookReview(models.Model):
|
|
book = models.ForeignKey(BookWithYear, models.CASCADE)
|
|
notes = models.TextField(null=True, blank=True)
|
|
|
|
|
|
# Models for default manager tests
|
|
|
|
class Qualification(models.Model):
|
|
name = models.CharField(max_length=10)
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class TeacherManager(models.Manager):
|
|
def get_queryset(self):
|
|
return super(TeacherManager, self).get_queryset().prefetch_related('qualifications')
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Teacher(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
qualifications = models.ManyToManyField(Qualification)
|
|
|
|
objects = TeacherManager()
|
|
|
|
def __str__(self):
|
|
return "%s (%s)" % (self.name, ", ".join(q.name for q in self.qualifications.all()))
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class Department(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
teachers = models.ManyToManyField(Teacher)
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
# GenericRelation/GenericForeignKey tests
|
|
|
|
@python_2_unicode_compatible
|
|
class TaggedItem(models.Model):
|
|
tag = models.SlugField()
|
|
content_type = models.ForeignKey(
|
|
ContentType,
|
|
models.CASCADE,
|
|
related_name="taggeditem_set2",
|
|
)
|
|
object_id = models.PositiveIntegerField()
|
|
content_object = GenericForeignKey('content_type', 'object_id')
|
|
created_by_ct = models.ForeignKey(
|
|
ContentType,
|
|
models.SET_NULL,
|
|
null=True,
|
|
related_name='taggeditem_set3',
|
|
)
|
|
created_by_fkey = models.PositiveIntegerField(null=True)
|
|
created_by = GenericForeignKey('created_by_ct', 'created_by_fkey',)
|
|
favorite_ct = models.ForeignKey(
|
|
ContentType,
|
|
models.SET_NULL,
|
|
null=True,
|
|
related_name='taggeditem_set4',
|
|
)
|
|
favorite_fkey = models.CharField(max_length=64, null=True)
|
|
favorite = GenericForeignKey('favorite_ct', 'favorite_fkey')
|
|
|
|
def __str__(self):
|
|
return self.tag
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class Bookmark(models.Model):
|
|
url = models.URLField()
|
|
tags = GenericRelation(TaggedItem, related_query_name='bookmarks')
|
|
favorite_tags = GenericRelation(TaggedItem,
|
|
content_type_field='favorite_ct',
|
|
object_id_field='favorite_fkey',
|
|
related_query_name='favorite_bookmarks')
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class Comment(models.Model):
|
|
comment = models.TextField()
|
|
|
|
# Content-object field
|
|
content_type = models.ForeignKey(ContentType, models.CASCADE)
|
|
object_pk = models.TextField()
|
|
content_object = GenericForeignKey(ct_field="content_type", fk_field="object_pk")
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
# Models for lookup ordering tests
|
|
|
|
class House(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
address = models.CharField(max_length=255)
|
|
owner = models.ForeignKey('Person', models.SET_NULL, null=True)
|
|
main_room = models.OneToOneField('Room', models.SET_NULL, related_name='main_room_of', null=True)
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class Room(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
house = models.ForeignKey(House, models.CASCADE, related_name='rooms')
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
class Person(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
houses = models.ManyToManyField(House, related_name='occupants')
|
|
|
|
@property
|
|
def primary_house(self):
|
|
# Assume business logic forces every person to have at least one house.
|
|
return sorted(self.houses.all(), key=lambda house: -house.rooms.count())[0]
|
|
|
|
@property
|
|
def all_houses(self):
|
|
return list(self.houses.all())
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
# Models for nullable FK tests
|
|
|
|
@python_2_unicode_compatible
|
|
class Employee(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
boss = models.ForeignKey('self', models.SET_NULL, null=True, related_name='serfs')
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
# Ticket #19607
|
|
|
|
@python_2_unicode_compatible
|
|
class LessonEntry(models.Model):
|
|
name1 = models.CharField(max_length=200)
|
|
name2 = models.CharField(max_length=200)
|
|
|
|
def __str__(self):
|
|
return "%s %s" % (self.name1, self.name2)
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class WordEntry(models.Model):
|
|
lesson_entry = models.ForeignKey(LessonEntry, models.CASCADE)
|
|
name = models.CharField(max_length=200)
|
|
|
|
def __str__(self):
|
|
return "%s (%s)" % (self.name, self.id)
|
|
|
|
|
|
# Ticket #21410: Regression when related_name="+"
|
|
|
|
@python_2_unicode_compatible
|
|
class Author2(models.Model):
|
|
name = models.CharField(max_length=50, unique=True)
|
|
first_book = models.ForeignKey('Book', models.CASCADE, related_name='first_time_authors+')
|
|
favorite_books = models.ManyToManyField('Book', related_name='+')
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
# Models for many-to-many with UUID pk test:
|
|
|
|
class Pet(models.Model):
|
|
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
|
|
name = models.CharField(max_length=20)
|
|
people = models.ManyToManyField(Person, related_name='pets')
|
|
|
|
|
|
class Flea(models.Model):
|
|
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
|
|
current_room = models.ForeignKey(Room, models.SET_NULL, related_name='fleas', null=True)
|
|
pets_visited = models.ManyToManyField(Pet, related_name='fleas_hosted')
|
|
people_visited = models.ManyToManyField(Person, related_name='fleas_hosted')
|