django/tests/modeltests/many_to_one/models.py

"""
4. Many-to-one relationships

To define a many-to-one relationship, use ``ForeignKey()``.
"""

from django.db import models

class Reporter(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=30)
    email = models.EmailField()

    def __unicode__(self):
        return u"%s %s" % (self.first_name, self.last_name)

class Article(models.Model):
    headline = models.CharField(max_length=100)
    pub_date = models.DateField()
    reporter = models.ForeignKey(Reporter)

    def __unicode__(self):
        return self.headline

    class Meta:
        ordering = ('headline',)