Add support for Django 4.1

    * Strip IDENTITY related suffixes auto fields are getting on Django 4.1.
      These suffixes are upsetting redshift.

.github/workflows/test.yml

@@ -11,10 +11,12 @@ jobs:
       max-parallel: 5
       matrix:
         python-version: ['3.7', '3.8', '3.9', '3.10']
-        django-version: ['3.2', '4.0']
+        django-version: ['3.2', '4.0', '4.1']
         exclude:
           - django-version: '4.0'
             python-version: '3.7'
+          - django-version: '4.1'
+            python-version: '3.7'
         include:
           - django-version: 'main'
             python-version: '3.9'

.gitignore

@@ -12,3 +12,4 @@ doc/_build/
 coverage.xml
 **/.env
 examples/**/migrations/*
+.idea/

django_redshift_backend/base.py

@@ -1092,6 +1092,10 @@ class DatabaseWrapper(BasePGDatabaseWrapper):
     data_types = deepcopy(BasePGDatabaseWrapper.data_types)
     data_types.update(redshift_data_types)
 
+    # Clear suffixes to rid of PostgreSQLs GENERATED BY DEFAULT AS IDENTITY that upset Redshift.
+    # Takes effect on Django>=4.1. Older version have this attribute empty
+    data_types_suffix = {}
+
     def __init__(self, *args, **kwargs):
         super(DatabaseWrapper, self).__init__(*args, **kwargs)
 

tox.ini

@@ -17,6 +17,7 @@ python =
 DJANGO =
     3.2: dj32
     4.0: dj40
+    4.1: dj41
     main: djmain
 
 [testenv]