fix: seo и пустое состояние тегов

cadpoint/web/sitemaps.py

@@ -0,0 +1,64 @@
+from django.contrib.sitemaps import Sitemap
+from django.urls import reverse
+from django.utils import timezone
+from django.db.models import Q
+from taggit.models import Tag
+
+from web.models import TbContent
+
+
+class CadpointSitemap(Sitemap):
+    """Одна карта сайта для публичных страниц CADpoint."""
+
+    changefreq = 'weekly'
+
+    def items(self):
+        now_value = timezone.now()
+        content_items = list(
+            TbContent.objects.filter(
+                bContentPublish=True,
+                tdContentPublishUp__lte=now_value,
+            ).filter(
+                Q(tdContentPublishDown__isnull=True) | Q(tdContentPublishDown__gt=now_value)
+            ).order_by('-tdContentPublishUp', 'id')
+        )
+        latest_content = content_items[0].dtContentTimeStamp if content_items else None
+
+        sitemap_items = [
+            {'kind': 'home', 'lastmod': latest_content},
+            {'kind': 'alltags', 'lastmod': latest_content},
+        ]
+
+        tags = Tag.objects.filter(taggit_taggeditem_items__isnull=False).distinct().order_by('name')
+        sitemap_items.extend({'kind': 'tag', 'tag': tag} for tag in tags)
+        sitemap_items.extend({'kind': 'item', 'item': item} for item in content_items)
+        return sitemap_items
+
+    def location(self, item):
+        kind = item['kind']
+        if kind == 'home':
+            return '/'
+        if kind == 'alltags':
+            return reverse('web_alltags')
+        if kind == 'tag':
+            return f"/tag_{item['tag'].slug}"
+        return f"/item/{item['item'].id}-{item['item'].szContentSlug}"
+
+    def lastmod(self, item):
+        kind = item['kind']
+        if kind in {'home', 'alltags'}:
+            return item.get('lastmod')
+        if kind == 'item':
+            return item['item'].dtContentTimeStamp
+        return None
+
+    def priority(self, item):
+        kind = item['kind']
+        if kind == 'home':
+            return 1.0
+        if kind == 'alltags':
+            return 0.6
+        if kind == 'tag':
+            return 0.5
+        return 0.8
+