text: from django.contrib.sitemaps import Sitemap
  
  from .models import Gallery, Photo
  
  
  class GallerySitemap(Sitemap):
      changefreq = "weekly"
      priority = 0.5
  
      def items(self):
          return Gallery.published.all()
  
      def lastmod(self, obj):
          return obj.modified
  
  
  class PhotoSitemap(Sitemap):
      changefreq = "weekly"
      priority = 0.5
  
      def items(self):
          return Photo.objects.all()
  
      def lastmod(self, obj):
          return obj.modified
  