blob: d4687dc6a206a095b26ddd412ec6ae835ee9f070 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
from django.db import models
class Author(models.Model):
first_name = models.CharField(max_length=128)
last_name = models.CharField(max_length=128)
class Editor(models.Model):
name = models.CharField(max_length=128)
bestselling_author = models.ForeignKey(Author, models.CASCADE)
class Book(models.Model):
title = models.CharField(max_length=128)
authors = models.ManyToManyField(Author)
editor = models.ForeignKey(Editor, models.CASCADE, related_name="edited_books")
class Meta:
default_related_name = "books"
class Store(models.Model):
name = models.CharField(max_length=128)
address = models.CharField(max_length=128)
class Meta:
abstract = True
default_related_name = "%(app_label)s_%(model_name)ss"
class BookStore(Store):
available_books = models.ManyToManyField(Book)
class EditorStore(Store):
editor = models.ForeignKey(Editor, models.CASCADE)
available_books = models.ManyToManyField(Book)
class Meta:
default_related_name = "editor_stores"
|