/tests/modeltests/many_to_many/models.py

 1"""
 25. Many-to-many relationships
 3
 4To define a many-to-many relationship, use ``ManyToManyField()``.
 5
 6In this example, an ``Article`` can be published in multiple ``Publication``
 7objects, and a ``Publication`` has multiple ``Article`` objects.
 8"""
 9
10from django.db import models
11
12class Publication(models.Model):
13    title = models.CharField(max_length=30)
14
15    def __unicode__(self):
16        return self.title
17
18    class Meta:
19        ordering = ('title',)
20
21class Article(models.Model):
22    headline = models.CharField(max_length=100)
23    publications = models.ManyToManyField(Publication)
24
25    def __unicode__(self):
26        return self.headline
27
28    class Meta:
29        ordering = ('headline',)