Виджет для формы выбора зеркал

dbapp/mainapp/views/source.py

@@ -37,10 +37,9 @@ class SourceListView(LoginRequiredMixin, View):
         date_to = request.GET.get("date_to", "").strip()
         
         # Get all Source objects with query optimization
-        sources = Source.objects.select_related(
-            'created_by__user',
-            'updated_by__user'
-        ).prefetch_related(
+        # Using annotate to count ObjItems efficiently (single query with GROUP BY)
+        # Using prefetch_related for reverse ForeignKey relationships to avoid N+1 queries
+        sources = Source.objects.prefetch_related(
             'source_objitems',
             'source_objitems__parameter_obj',
             'source_objitems__geo_obj'
@@ -164,8 +163,6 @@ class SourceListView(LoginRequiredMixin, View):
                 'objitem_count': objitem_count,
                 'created_at': source.created_at,
                 'updated_at': source.updated_at,
-                'created_by': source.created_by,
-                'updated_by': source.updated_by,
             })
         
         # Prepare context for template