From 4d6a9d9c08e397fedc45b7cbb8d25ae125e2feec Mon Sep 17 00:00:00 2001
From: Savva Surenkov <savva@surenkov.space>
Date: Mon, 24 Jul 2023 12:11:09 +0400
Subject: [PATCH] Add backward support for pydantic 1.9.*

---
 django_pydantic_field/base.py  | 19 ++++++-------------
 django_pydantic_field/utils.py | 16 ++++++++++++++++
 pyproject.toml                 |  2 +-
 3 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/django_pydantic_field/base.py b/django_pydantic_field/base.py
index a4caadd..c4e9d9b 100644
--- a/django_pydantic_field/base.py
+++ b/django_pydantic_field/base.py
@@ -2,11 +2,10 @@
 
 import pydantic
 from django.core.serializers.json import DjangoJSONEncoder
-from pydantic.config import get_config, inherit_config
 from pydantic.json import pydantic_encoder
 from pydantic.typing import display_as_type
 
-from .utils import get_local_namespace
+from .utils import get_local_namespace, inherit_configs
 
 __all__ = (
     "SchemaEncoder",
@@ -134,15 +133,9 @@ def _get_field_schema_name(schema) -> str:
 
 def _get_field_schema_params(schema, config=None, allow_null=False, **kwargs) -> dict:
     root_model = t.Optional[schema] if allow_null else schema
-    params: t.Dict[str, t.Any] = dict(kwargs, __root__=(root_model, ...))
-    parent_config = getattr(schema, "Config", None)
-
-    if config is not None:
-        config = get_config(config)
-        if parent_config is not None:
-            config = inherit_config(config, parent_config)
-    else:
-        config = parent_config
-
-    params["__config__"] = config
+    params: t.Dict[str, t.Any] = dict(
+        kwargs,
+        __root__=(root_model, ...),
+        __config__=inherit_configs(schema, config),
+    )
     return params
diff --git a/django_pydantic_field/utils.py b/django_pydantic_field/utils.py
index c39fb73..3a8622b 100644
--- a/django_pydantic_field/utils.py
+++ b/django_pydantic_field/utils.py
@@ -1,6 +1,13 @@
+from __future__ import annotations
+
 import sys
 import typing as t
 
+from pydantic.config import BaseConfig, inherit_config
+
+if t.TYPE_CHECKING:
+    from pydantic import BaseModel
+
 
 def get_annotated_type(obj, field, default=None) -> t.Any:
     try:
@@ -20,3 +27,12 @@ def get_local_namespace(cls) -> t.Dict[str, t.Any]:
         return vars(sys.modules[module])
     except (KeyError, AttributeError):
         return {}
+
+
+def inherit_configs(parent: t.Type[BaseModel], config: t.Type | dict | None = None) -> t.Type[BaseConfig]:
+    parent_config = t.cast(t.Type[BaseConfig], getattr(parent, "Config", BaseConfig))
+    if config is None:
+        return parent_config
+    if isinstance(config, dict):
+        config = type("Config", (BaseConfig,), config)
+    return inherit_config(config, parent_config)
diff --git a/pyproject.toml b/pyproject.toml
index c7c11ce..1fd0418 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "django-pydantic-field"
-version = "0.2.7"
+version = "0.2.8"
 description = "Django JSONField with Pydantic models as a Schema"
 readme = "README.md"
 license = { file = "LICENSE" }