This project is an attempt at making proper PostgreSQL net related fields for
Django. In Django pre 1.4 the built in IPAddressField does not support IPv6
and uses an inefficient HOST() cast in all lookups. As of 1.4 you can use
GenericIPAddressField for IPv6, but the casting problem remains.
In addition to the basic IPAddressField replacement a CIDR and
MACADDR field have been added. This library also provides a manager that
allows for advanced IP based lookup directly in the ORM.
Current version of code is targeting Django 1.3-1.4 support, as this relies heavily
on ORM internals supporting multiple versions is especially tricky. IPy is
used for the same reasons. ipaddr is being considered, but the conversion
hinges on the related projects conversion to ipaddr.
Make sure netfields is in your PYTHONPATH, then simply use the
following:
from netfields import InetAddressField, NetManager
class Example(models.Model):
inet = InetAddressField()
# ...
objects = NetManager()
The package also provides CidrAddressField and a MACAddressField.
NetManager is required for the extra lookups to be available. Lookups for
INET and CIDR database types will be handled differently than when
running vanilla Django. All lookups are case-insensitive and text based
lookups are avoided whenever possible. In addition to Django's default lookup
types the following have been added.
__net_contained__net_contained_or_equal__net_contains__net_contains_or_equals
These correspond with the operators from http://www.postgresql.org/docs/9.1/interactive/functions-net.html
netfields does not have to be in INSTALLED_APPS.
- 11442 - Postgresql backend casts inet types to text, breaks IP operations and IPv6 lookups.
- 811 - IPv6 address field support.
https://docs.djangoproject.com/en/dev/releases/1.4/#extended-ipv6-support is also relevant
https://bitbucket.org/onelson/django-ipyfield tries to solve some of the same
issues as this library. However, instead of supporting just postgres via the proper
fields types the ipyfield currently uses a VARCHAR(39) as a fake unsigned 64 bit
number in its implementation.