django-allowedsites-dynamic 0.2.0

dynamic ALLOWED_HOSTS

Django 1.6+ library for setting your ALLOWED_HOSTS based on the domains in django.contrib.sites and the server’s public IP address which is determined at runtime.

Usage is something like the following, in your settings.py or equivalent:

from allowedsites import AllowedSites
ALLOWED_HOSTS = AllowedSites(defaults=('mytestsite.com',), dynamic_public_ip=False, net_timeout=5)

• dynamic_public_ip=False

  If set True, the server’s public IP address is set for ALLOWED_HOSTS at runtime.

  The default is False.

• net_timeout=5

  The timeout for the network request to get the server’s public IP address.

  The default is 5 seconds.

Or, if you want to use your cache backend:

from allowedsites import CachedAllowedSites
ALLOWED_HOSTS = CachedAllowedSites(cache_timeout=None)

• cache_timeout=None

  For how long the cache will last, in seconds.

  The default is None, means cache forever.

A single key, allowedsites will be inserted containing an unsorted collection of all the domains that are in the django.contrib.sites. For the sake of allowing multiple processes to keep up to date with the Site values without hitting the database, using a shared cache (ie: not LocMemCache) is encouraged.

The CachedAllowedSites also provides an clear_cache class method and an update_cache instance method which may be used as a signal listener:

from django.db.models.signals import post_save
from django.contrib.sites.models import Site
post_save.connect(CachedAllowedSites.clear_cache, sender=Site,
                  dispatch_uid='clear_allowedsites')

Or:

from django.conf import settings
from django.db.models.signals import post_save
from django.contrib.sites.models import Site
post_save.connect(settings.ALLOWED_HOSTS.update_cache, sender=Site,
                  dispatch_uid='update_allowedsites')

You can modify the the defaults:

from allowedsites import AllowedSites
ALLOWED_HOSTS = AllowedSites(defaults=('mytestsite.com',))
ALLOWED_HOSTS += AllowedSites(defaults=('anothersite.net',))
ALLOWED_HOSTS -= AllowedSites(defaults=('mytestsite.com',))
# ultimately, only anothersite.net is in the defaults

Other uses?

It may work with django-csp (Content Security Policy headers), django-dcors (Cross-Origin Resource Sharing headers) and others. I don’t know.

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Copyright (c) 2014, Keryn Knight All rights reserved.

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This license applies to version 0.1.0 of django-allowedsites.