update for Django 6.1

Author: timgraham

django-test-suite/build.sh

@@ -7,7 +7,7 @@ VERSION=$1
 
 # clone django into the repo.
 rm -rf _django_repo
-git clone --depth 1 --single-branch --branch cockroach-6.0.x https://github.com/timgraham/django _django_repo
+git clone --depth 1 --single-branch --branch cockroach-6.1.x https://github.com/timgraham/django _django_repo
 
 # install the django requirements.
 cd _django_repo/tests/

django_cockroachdb/__init__.py

@@ -1,4 +1,4 @@
-__version__ = '6.0'
+__version__ = '6.1a0'
 
 # Check Django compatibility before other imports which may fail if the
 # wrong version of Django is installed.

django_cockroachdb/features.py

@@ -48,6 +48,10 @@ class DatabaseFeatures(PostgresDatabaseFeatures):
     # https://github.com/cockroachdb/cockroach/issues/95068
     supports_comments = False
 
+    # CockroachDB doesn't support UNIQUE NULLS NOT DISTINCT:
+    # https://github.com/cockroachdb/cockroach/issues/115836
+    supports_nulls_distinct_unique_constraints = False
+
     @cached_property
     def introspected_field_types(self):
         return {

django_cockroachdb/schema.py

@@ -18,7 +18,10 @@ class DatabaseSchemaEditor(PostgresDatabaseSchemaEditor):
 
     # The PostgreSQL backend uses "SET CONSTRAINTS ... IMMEDIATE" after
     # creating this foreign key. This isn't supported by CockroachDB.
-    sql_create_column_inline_fk = 'CONSTRAINT %(name)s REFERENCES %(to_table)s(%(to_column)s)%(deferrable)s'
+    sql_create_column_inline_fk = (
+        'CONSTRAINT %(name)s REFERENCES %(to_table)s(%(to_column)s)'
+        '%(on_delete_db)s%(deferrable)s'
+    )
 
     # The PostgreSQL backend uses "SET CONSTRAINTS ... IMMEDIATE" after this
     # statement. This isn't supported by CockroachDB.