File: models.py

package info (click to toggle)
python-django 1.8.18-1~bpo8%2B1
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 41,628 kB
  • sloc: python: 189,488; xml: 695; makefile: 194; sh: 169; sql: 11
file content (54 lines) | stat: -rw-r--r-- 1,343 bytes parent folder | download
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
42
43
44
45
46
47
48
49
50
51
52
53
54
"""
Many-to-many relationships

To define a many-to-many relationship, use ``ManyToManyField()``.

In this example, an ``Article`` can be published in multiple ``Publication``
objects, and a ``Publication`` has multiple ``Article`` objects.
"""
from __future__ import unicode_literals

from django.db import models
from django.utils.encoding import python_2_unicode_compatible


@python_2_unicode_compatible
class Publication(models.Model):
    title = models.CharField(max_length=30)

    def __str__(self):
        return self.title

    class Meta:
        ordering = ('title',)


@python_2_unicode_compatible
class Article(models.Model):
    headline = models.CharField(max_length=100)
    # Assign a unicode string as name to make sure the intermediary model is
    # correctly created. Refs #20207
    publications = models.ManyToManyField(Publication, name='publications')

    def __str__(self):
        return self.headline

    class Meta:
        ordering = ('headline',)


# Models to test correct related_name inheritance
class AbstractArticle(models.Model):
    class Meta:
        abstract = True
        ordering = ('title',)

    publications = models.ManyToManyField(Publication, name='publications', related_name='+')


class InheritedArticleA(AbstractArticle):
    pass


class InheritedArticleB(AbstractArticle):
    pass