fix for obsolete pydantic parameters

ormar/models/helpers/__init__.py

@@ -8,6 +8,7 @@ from ormar.models.helpers.pydantic import (
     get_potential_fields,
     get_pydantic_base_orm_config,
     get_pydantic_field,
+    merge_or_generate_pydantic_config,
     remove_excluded_parent_fields,
 )
 from ormar.models.helpers.relations import (
@@ -33,6 +34,7 @@ __all__ = [
     "get_pydantic_field",
     "get_potential_fields",
     "get_pydantic_base_orm_config",
+    "merge_or_generate_pydantic_config",
     "check_required_meta_parameters",
     "sqlalchemy_columns_from_model_fields",
     "populate_choices_validators",

ormar/models/helpers/pydantic.py

@@ -1,3 +1,4 @@
+import inspect
 from typing import Dict, Optional, TYPE_CHECKING, Tuple, Type
 
 import pydantic
@@ -5,6 +6,7 @@ from pydantic.fields import ModelField
 from pydantic.utils import lenient_issubclass
 
 from ormar.fields import BaseField  # noqa: I100, I202
+from ormar.exceptions import ModelDefinitionError
 
 if TYPE_CHECKING:  # pragma no cover
     from ormar import Model
@@ -88,6 +90,31 @@ def populate_pydantic_default_values(attrs: Dict) -> Tuple[Dict, Dict]:
     return attrs, model_fields
 
 
+def merge_or_generate_pydantic_config(attrs: Dict, name: str) -> None:
+    """
+    Checks if the user provided pydantic Config,
+    and if he did merges it with the default one.
+
+    Updates the attrs in place with a new config.
+
+    :rtype: None
+    """
+    DefaultConfig = get_pydantic_base_orm_config()
+    if "Config" in attrs:
+        ProvidedConfig = attrs["Config"]
+        if not inspect.isclass(ProvidedConfig):
+            raise ModelDefinitionError(
+                f"Config provided for class {name} has to be a class."
+            )
+
+        class Config(ProvidedConfig, DefaultConfig):  # type: ignore
+            pass
+
+        attrs["Config"] = Config
+    else:
+        attrs["Config"] = DefaultConfig
+
+
 def get_pydantic_base_orm_config() -> Type[pydantic.BaseConfig]:
     """
     Returns empty pydantic Config with orm_mode set to True.