/tests/modeltests/get_latest/models.py

 1"""
 28. get_latest_by
 3
 4Models can have a ``get_latest_by`` attribute, which should be set to the name
 5of a ``DateField`` or ``DateTimeField``. If ``get_latest_by`` exists, the
 6model's manager will get a ``latest()`` method, which will return the latest
 7object in the database according to that field. "Latest" means "having the date
 8farthest into the future."
 9"""
10
11from django.db import models
12
13class Article(models.Model):
14    headline = models.CharField(max_length=100)
15    pub_date = models.DateField()
16    expire_date = models.DateField()
17    class Meta:
18        get_latest_by = 'pub_date'
19
20    def __unicode__(self):
21        return self.headline
22
23class Person(models.Model):
24    name = models.CharField(max_length=30)
25    birthday = models.DateField()
26
27    # Note that this model doesn't have "get_latest_by" set.
28
29    def __unicode__(self):
30        return self.name