170 lines
4.4 KiB
Python
170 lines
4.4 KiB
Python
from django.contrib.contenttypes import generic
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.db import models
|
|
|
|
## Basic tests
|
|
|
|
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 __unicode__(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']
|
|
|
|
|
|
class AuthorAddress(models.Model):
|
|
author = models.ForeignKey(Author, to_field='name', related_name='addresses')
|
|
address = models.TextField()
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
def __unicode__(self):
|
|
return self.address
|
|
|
|
|
|
class Book(models.Model):
|
|
title = models.CharField(max_length=255)
|
|
authors = models.ManyToManyField(Author, related_name='books')
|
|
|
|
def __unicode__(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 Reader(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
books_read = models.ManyToManyField(Book, related_name='read_by')
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
## 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_query_set(self):
|
|
return super(TeacherManager, self).get_query_set().prefetch_related('qualifications')
|
|
|
|
|
|
class Teacher(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
qualifications = models.ManyToManyField(Qualification)
|
|
|
|
objects = TeacherManager()
|
|
|
|
def __unicode__(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
|
|
|
|
class TaggedItem(models.Model):
|
|
tag = models.SlugField()
|
|
content_type = models.ForeignKey(ContentType, related_name="taggeditem_set2")
|
|
object_id = models.PositiveIntegerField()
|
|
content_object = generic.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 = generic.GenericForeignKey('created_by_ct', 'created_by_fkey',)
|
|
|
|
def __unicode__(self):
|
|
return self.tag
|
|
|
|
|
|
class Bookmark(models.Model):
|
|
url = models.URLField()
|
|
tags = generic.GenericRelation(TaggedItem)
|
|
|
|
|
|
## Models for lookup ordering tests
|
|
|
|
|
|
class House(models.Model):
|
|
address = models.CharField(max_length=255)
|
|
|
|
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]
|
|
|
|
class Meta:
|
|
ordering = ['id']
|
|
|
|
|
|
## Models for nullable FK tests
|
|
|
|
class Employee(models.Model):
|
|
name = models.CharField(max_length=50)
|
|
boss = models.ForeignKey('self', null=True,
|
|
related_name='serfs')
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Meta:
|
|
ordering = ['id']
|