/tests/modeltests/m2m_multiple/models.py
https://code.google.com/p/mango-py/ · Python · 30 lines · 21 code · 6 blank · 3 comment · 0 complexity · a95e247c8e36219cee0f25f8347db307 MD5 · raw file
- """
- 20. Multiple many-to-many relationships between the same two tables
- In this example, an ``Article`` can have many "primary" ``Category`` objects
- and many "secondary" ``Category`` objects.
- Set ``related_name`` to designate what the reverse relationship is called.
- """
- from django.db import models
- class Category(models.Model):
- name = models.CharField(max_length=20)
- class Meta:
- ordering = ('name',)
- def __unicode__(self):
- return self.name
- class Article(models.Model):
- headline = models.CharField(max_length=50)
- pub_date = models.DateTimeField()
- primary_categories = models.ManyToManyField(Category, related_name='primary_article_set')
- secondary_categories = models.ManyToManyField(Category, related_name='secondary_article_set')
- class Meta:
- ordering = ('pub_date',)
- def __unicode__(self):
- return self.headline