mirror of
https://github.com/django/django.git
synced 2024-12-25 02:26:12 +00:00
36 lines
1012 B
Python
36 lines
1012 B
Python
"""
|
|
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
|
|
from django.utils.encoding import python_2_unicode_compatible
|
|
|
|
|
|
class Author(models.Model):
|
|
class Meta:
|
|
ordering = ('-pk',)
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Article(models.Model):
|
|
author = models.ForeignKey(Author, null=True)
|
|
headline = models.CharField(max_length=100)
|
|
pub_date = models.DateTimeField()
|
|
|
|
class Meta:
|
|
ordering = ('-pub_date', 'headline')
|
|
|
|
def __str__(self):
|
|
return self.headline
|