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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', 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, parent_link=True)
age = models.IntegerField()
class FavoriteAuthors(models.Model):
author = models.ForeignKey(Author, to_field='name', related_name='i_like')
likes_author = models.ForeignKey(Author, to_field='name', related_name='likes_me')
class Meta:
ordering = ['id']
@python_2_unicode_compatible
class AuthorAddress(models.Model):
author = models.ForeignKey(Author, 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, 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)
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)
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, related_name="taggeditem_set2")
object_id = models.PositiveIntegerField()
content_object = GenericForeignKey('content_type', 'object_id')
created_by_ct = models.ForeignKey(ContentType, 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, 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)
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', null=True)
main_room = models.OneToOneField('Room', 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, 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', 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)
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', 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, related_name='fleas', null=True)
pets_visited = models.ManyToManyField(Pet, related_name='fleas_hosted')
people_visited = models.ManyToManyField(Person, related_name='fleas_hosted')
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