Method __new__

sqlmodel/main.py:540–624

(
        cls,
        name: str,
        bases: tuple[type[Any], ...],
        class_dict: dict[str, Any],
        **kwargs: Any,
    )

    # From Pydantic
    def __new__(
        cls,
        name: str,
        bases: tuple[type[Any], ...],
        class_dict: dict[str, Any],
        **kwargs: Any,
    ) -> Any:
        relationships: dict[str, RelationshipInfo] = {}
        dict_for_pydantic = {}
        original_annotations = get_annotations(class_dict)
        pydantic_annotations = {}
        relationship_annotations = {}
        for k, v in class_dict.items():
            if isinstance(v, RelationshipInfo):
                relationships[k] = v
            else:
                dict_for_pydantic[k] = v
        for k, v in original_annotations.items():
            if k in relationships:
                relationship_annotations[k] = v
            else:
                pydantic_annotations[k] = v
        dict_used = {
            **dict_for_pydantic,
            "__weakref__": None,
            "__sqlmodel_relationships__": relationships,
            "__annotations__": pydantic_annotations,
        }
        # Duplicate logic from Pydantic to filter config kwargs because if they are
        # passed directly including the registry Pydantic will pass them over to the
        # superclass causing an error
        allowed_config_kwargs: set[str] = {
            key
            for key in dir(BaseConfig)
            if not (
                key.startswith("__") and key.endswith("__")
            )  # skip dunder methods and attributes
        }
        config_kwargs = {
            key: kwargs[key] for key in kwargs.keys() & allowed_config_kwargs
        }
        new_cls = cast(
            "SQLModel", super().__new__(cls, name, bases, dict_used, **config_kwargs)
        )
        new_cls.__annotations__ = {
            **relationship_annotations,
            **pydantic_annotations,
            **new_cls.__annotations__,
        }

        def get_config(name: str) -> Any:
            config_class_value = new_cls.model_config.get(name, Undefined)
            if config_class_value is not Undefined:
                return config_class_value
            kwarg_value = kwargs.get(name, Undefined)
            if kwarg_value is not Undefined:
                return kwarg_value
            return Undefined