Improve inheritance hierarchy

Author: Tschuppi81

src/onegov/api/models.py

@@ -509,7 +509,7 @@ def batch(self) -> dict[ApiEndpointItem[L, IdT], L]:
         result = super().batch
         items = tuple(result.values())
         if items:
-            type(items[0]).preload_ancestors(self.session, items)
+            items[0].preload_ancestors(self.session, items)
         return result
 
 

src/onegov/org/api.py

@@ -450,6 +450,8 @@ def item_links(self, item: Occurrence) -> dict[str, Any]:
         }
 
 
+# NOTE: News is a flat two-level tree (one shared root), so it's not an N+1
+#       like topics/agencies -- hence plain ApiEndpoint here.
 class NewsApiEndpoint(ApiEndpoint[News, int]):
     app: OrgApp
     request: OrgRequest