"""

6. Specifying ordering

Specify default ordering for a model using the ``ordering`` attribute, which

should be a list or tuple of field names. This tells Django how to order

``QuerySet`` results.

If a field name in ``ordering`` starts with a hyphen, that field will be

ordered in descending order. Otherwise, it'll be ordered in ascending order.

The special-case field name ``"?"`` specifies random order.

The ordering attribute is not required. If you leave it off, ordering will be

undefined -- not random, just undefined.

"""

from django.db import models

class Article(models.Model):

    headline = models.CharField(max_length=100)

    pub_date = models.DateTimeField()

    class Meta:

        ordering = ('-pub_date', 'headline')

    def __unicode__(self):

        return self.headline