Fixed #34344 -- Allowed PostGIS DatabaseWrapper subclasses to customize (features/introspection/ops)_class classes.

django/contrib/gis/db/backends/postgis/base.py

@@ -2,6 +2,15 @@ from functools import lru_cache
 
 from django.db.backends.base.base import NO_DB_ALIAS
 from django.db.backends.postgresql.base import DatabaseWrapper as PsycopgDatabaseWrapper
+from django.db.backends.postgresql.features import (
+    DatabaseFeatures as PsycopgDatabaseFeatures,
+)
+from django.db.backends.postgresql.introspection import (
+    DatabaseIntrospection as PsycopgDatabaseIntrospection,
+)
+from django.db.backends.postgresql.operations import (
+    DatabaseOperations as PsycopgDatabaseOperations,
+)
 from django.db.backends.postgresql.psycopg_any import is_psycopg3
 
 from .adapter import PostGISAdapter
@@ -81,6 +90,9 @@ if is_psycopg3:
 
 class DatabaseWrapper(PsycopgDatabaseWrapper):
     SchemaEditorClass = PostGISSchemaEditor
+    features_class = DatabaseFeatures
+    ops_class = PostGISOperations
+    introspection_class = PostGISIntrospection
 
     _type_infos = {
         "geometry": {},
@@ -89,11 +101,13 @@ class DatabaseWrapper(PsycopgDatabaseWrapper):
     }
 
     def __init__(self, *args, **kwargs):
+        if kwargs.get("alias", "") == NO_DB_ALIAS:
+            # Don't initialize PostGIS-specific stuff for non-db connections.
+            self.features_class = PsycopgDatabaseFeatures
+            self.ops_class = PsycopgDatabaseOperations
+            self.introspection_class = PsycopgDatabaseIntrospection
+
         super().__init__(*args, **kwargs)
-        if kwargs.get("alias", "") != NO_DB_ALIAS:
-            self.features = DatabaseFeatures(self)
-            self.ops = PostGISOperations(self)
-            self.introspection = PostGISIntrospection(self)
 
     def prepare_database(self):
         super().prepare_database()