Erste Version mit erstem Datenmodell realisiert. Noch kein Template, kein View.

venv/lib/python3.12/site-packages/django/contrib/postgres/aggregates/mixins.py

@@ -0,0 +1,36 @@
+# RemovedInDjango70Warning: When the deprecation ends, remove completely.
+import warnings
+
+from django.utils.deprecation import RemovedInDjango61Warning, RemovedInDjango70Warning
+
+
+# RemovedInDjango61Warning.
+class _DeprecatedOrdering:
+    def __init__(self, *expressions, ordering=(), order_by=(), **extra):
+        if ordering:
+            warnings.warn(
+                "The ordering argument is deprecated. Use order_by instead.",
+                category=RemovedInDjango61Warning,
+                stacklevel=2,
+            )
+            if order_by:
+                raise TypeError("Cannot specify both order_by and ordering.")
+            order_by = ordering
+
+        super().__init__(*expressions, order_by=order_by, **extra)
+
+
+# RemovedInDjango70Warning.
+# RemovedInDjango61Warning: When the deprecation ends, replace with:
+# class OrderableAggMixin:
+class OrderableAggMixin(_DeprecatedOrdering):
+    allow_order_by = True
+
+    def __init_subclass__(cls, /, *args, **kwargs):
+        warnings.warn(
+            "OrderableAggMixin is deprecated. Use Aggregate and allow_order_by "
+            "instead.",
+            category=RemovedInDjango70Warning,
+            stacklevel=1,
+        )
+        super().__init_subclass__(*args, **kwargs)