Fixed #31630 -- Replaced introspection features with DatabaseFeatures.introspected_field_types.

1 files changed, 9 insertions, 3 deletions

diff --git a/django/db/backends/postgresql/features.py b/django/db/backends/postgresql/features.py
index f8d2ea1286..f11558c791 100644
--- a/django/db/backends/postgresql/features.py
+++ b/django/db/backends/postgresql/features.py
@@ -22,10 +22,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     can_release_savepoints = True
     supports_tablespaces = True
     supports_transactions = True
-    can_introspect_autofield = True
-    can_introspect_ip_address_field = True
     can_introspect_materialized_views = True
-    can_introspect_small_integer_field = True
     can_distinct_on_fields = True
     can_rollback_ddl = True
     supports_combined_alters = True
@@ -62,6 +59,15 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     has_json_operators = True
 
     @cached_property
+    def introspected_field_types(self):
+        return {
+            **super().introspected_field_types,
+            'PositiveBigIntegerField': 'BigIntegerField',
+            'PositiveIntegerField': 'IntegerField',
+            'PositiveSmallIntegerField': 'SmallIntegerField',
+        }
+
+    @cached_property
     def is_postgresql_10(self):
         return self.connection.pg_version >= 100000