sitemaps.Sitemap.lastmod

lastmod

Optional. Either a method or attribute.

If it’s a method, it should take one argument – an object as returned by items() – and return that object’s last-modified date/time as a datetime.

If it’s an attribute, its value should be a datetime representing the last-modified date/time for every object returned by items().

If all items in a sitemap have a lastmod, the sitemap generated by views.sitemap() will have a Last-Modified header equal to the latest lastmod. You can activate the ConditionalGetMiddleware to make Django respond appropriately to requests with an If-Modified-Since header which will prevent sending the sitemap if it hasn’t changed.