75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
from django.db import models
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from django.utils.translation import ugettext_lazy as _
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SITE_CACHE = {}
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class SiteManager(models.Manager):
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def get_current(self):
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"""
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Returns the current ``Site`` based on the SITE_ID in the
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project's settings. The ``Site`` object is cached the first
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time it's retrieved from the database.
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"""
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from django.conf import settings
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try:
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sid = settings.SITE_ID
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except AttributeError:
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from django.core.exceptions import ImproperlyConfigured
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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.")
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try:
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current_site = SITE_CACHE[sid]
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except KeyError:
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current_site = self.get(pk=sid)
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SITE_CACHE[sid] = current_site
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return current_site
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def clear_cache(self):
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"""Clears the ``Site`` object cache."""
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global SITE_CACHE
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SITE_CACHE = {}
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class Site(models.Model):
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domain = models.CharField(_('domain name'), max_length=100)
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name = models.CharField(_('display name'), max_length=50)
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objects = SiteManager()
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class Meta:
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db_table = 'django_site'
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verbose_name = _('site')
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verbose_name_plural = _('sites')
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ordering = ('domain',)
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class Admin:
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list_display = ('domain', 'name')
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search_fields = ('domain', 'name')
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def __unicode__(self):
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return self.domain
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def delete(self):
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pk = self.pk
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super(Site, self).delete()
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try:
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del(SITE_CACHE[pk])
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except KeyError:
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pass
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class RequestSite(object):
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"""
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A class that shares the primary interface of Site (i.e., it has
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``domain`` and ``name`` attributes) but gets its data from a Django
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HttpRequest object rather than from a database.
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The save() and delete() methods raise NotImplementedError.
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"""
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def __init__(self, request):
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self.domain = self.name = request.get_host()
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def __unicode__(self):
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return self.domain
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def save(self):
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raise NotImplementedError('RequestSite cannot be saved.')
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def delete(self):
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raise NotImplementedError('RequestSite cannot be deleted.')
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