99 lines
2.9 KiB
Python
99 lines
2.9 KiB
Python
from django.db import models
|
|
from django.utils.translation import ugettext_lazy as _
|
|
from django.utils.encoding import python_2_unicode_compatible
|
|
|
|
|
|
SITE_CACHE = {}
|
|
|
|
|
|
class SiteManager(models.Manager):
|
|
|
|
def get_current(self):
|
|
"""
|
|
Returns the current ``Site`` based on the SITE_ID in the
|
|
project's settings. The ``Site`` object is cached the first
|
|
time it's retrieved from the database.
|
|
"""
|
|
from django.conf import settings
|
|
try:
|
|
sid = settings.SITE_ID
|
|
except AttributeError:
|
|
from django.core.exceptions import ImproperlyConfigured
|
|
raise ImproperlyConfigured("You're using the Django \"sites framework\" without having set the SITE_ID setting. Create a site in your database and set the SITE_ID setting to fix this error.")
|
|
try:
|
|
current_site = SITE_CACHE[sid]
|
|
except KeyError:
|
|
current_site = self.get(pk=sid)
|
|
SITE_CACHE[sid] = current_site
|
|
return current_site
|
|
|
|
def clear_cache(self):
|
|
"""Clears the ``Site`` object cache."""
|
|
global SITE_CACHE
|
|
SITE_CACHE = {}
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Site(models.Model):
|
|
|
|
domain = models.CharField(_('domain name'), max_length=100)
|
|
name = models.CharField(_('display name'), max_length=50)
|
|
objects = SiteManager()
|
|
|
|
class Meta:
|
|
db_table = 'django_site'
|
|
verbose_name = _('site')
|
|
verbose_name_plural = _('sites')
|
|
ordering = ('domain',)
|
|
|
|
def __str__(self):
|
|
return self.domain
|
|
|
|
def save(self, *args, **kwargs):
|
|
super(Site, self).save(*args, **kwargs)
|
|
# Cached information will likely be incorrect now.
|
|
if self.id in SITE_CACHE:
|
|
del SITE_CACHE[self.id]
|
|
|
|
def delete(self):
|
|
pk = self.pk
|
|
super(Site, self).delete()
|
|
try:
|
|
del SITE_CACHE[pk]
|
|
except KeyError:
|
|
pass
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class RequestSite(object):
|
|
"""
|
|
A class that shares the primary interface of Site (i.e., it has
|
|
``domain`` and ``name`` attributes) but gets its data from a Django
|
|
HttpRequest object rather than from a database.
|
|
|
|
The save() and delete() methods raise NotImplementedError.
|
|
"""
|
|
def __init__(self, request):
|
|
self.domain = self.name = request.get_host()
|
|
|
|
def __str__(self):
|
|
return self.domain
|
|
|
|
def save(self, force_insert=False, force_update=False):
|
|
raise NotImplementedError('RequestSite cannot be saved.')
|
|
|
|
def delete(self):
|
|
raise NotImplementedError('RequestSite cannot be deleted.')
|
|
|
|
|
|
def get_current_site(request):
|
|
"""
|
|
Checks if contrib.sites is installed and returns either the current
|
|
``Site`` object or a ``RequestSite`` object based on the request.
|
|
"""
|
|
if Site._meta.installed:
|
|
current_site = Site.objects.get_current()
|
|
else:
|
|
current_site = RequestSite(request)
|
|
return current_site
|