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from django.core import urlresolvers, paginator
import urllib
PING_URL = "http://www.google.com/webmasters/tools/ping"
class SitemapNotFound(Exception):
pass
def ping_google(sitemap_url=None, ping_url=PING_URL):
"""
Alerts Google that the sitemap for the current site has been updated.
If sitemap_url is provided, it should be an absolute path to the sitemap
for this site -- e.g., '/sitemap.xml'. If sitemap_url is not provided, this
function will attempt to deduce it by using urlresolvers.reverse().
"""
if sitemap_url is None:
try:
# First, try to get the "index" sitemap URL.
sitemap_url = urlresolvers.reverse('django.contrib.sitemaps.views.index')
except urlresolvers.NoReverseMatch:
try:
# Next, try for the "global" sitemap URL.
sitemap_url = urlresolvers.reverse('django.contrib.sitemaps.views.sitemap')
except urlresolvers.NoReverseMatch:
pass
if sitemap_url is None:
raise SitemapNotFound("You didn't provide a sitemap_url, and the sitemap URL couldn't be auto-detected.")
from django.contrib.sites.models import Site
current_site = Site.objects.get_current()
url = "http://%s%s" % (current_site.domain, sitemap_url)
params = urllib.urlencode({'sitemap':url})
urllib.urlopen("%s?%s" % (ping_url, params))
class Sitemap:
# This limit is defined by Google. See the index documentation at
# http://sitemaps.org/protocol.php#index.
limit = 50000
def __get(self, name, obj, default=None):
try:
attr = getattr(self, name)
except AttributeError:
return default
if callable(attr):
return attr(obj)
return attr
def items(self):
return []
def location(self, obj):
return obj.get_absolute_url()
def _get_paginator(self):
if not hasattr(self, "_paginator"):
self._paginator = paginator.Paginator(self.items(), self.limit)
return self._paginator
paginator = property(_get_paginator)
def get_urls(self, page=1):
from django.contrib.sites.models import Site
current_site = Site.objects.get_current()
urls = []
for item in self.paginator.page(page).object_list:
loc = "http://%s%s" % (current_site.domain, self.__get('location', item))
url_info = {
'location': loc,
'lastmod': self.__get('lastmod', item, None),
'changefreq': self.__get('changefreq', item, None),
'priority': self.__get('priority', item, None)
}
urls.append(url_info)
return urls
class FlatPageSitemap(Sitemap):
def items(self):
from django.contrib.sites.models import Site
current_site = Site.objects.get_current()
return current_site.flatpage_set.all()
class GenericSitemap(Sitemap):
priority = None
changefreq = None
def __init__(self, info_dict, priority=None, changefreq=None):
self.queryset = info_dict['queryset']
self.date_field = info_dict.get('date_field', None)
self.priority = priority
self.changefreq = changefreq
def items(self):
# Make sure to return a clone; we don't want premature evaluation.
return self.queryset.filter()
def lastmod(self, item):
if self.date_field is not None:
return getattr(item, self.date_field)
return None
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