+
−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(object):
+
−    # 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