Function validate_callback_arg

dash/_validate.py:54–85

(arg)

def validate_callback_arg(arg):
    if not isinstance(getattr(arg, "component_property", None), str):
        raise exceptions.IncorrectTypeException(
            dedent(
                f"""
                component_property must be a string, found {arg.component_property!r}
                """
            )
        )

    if hasattr(arg, "component_event"):
        raise exceptions.NonExistentEventException(
            """
            Events have been removed.
            Use the associated property instead.
            """
        )

    if isinstance(arg.component_id, dict):
        validate_id_dict(arg)

    elif isinstance(arg.component_id, str):
        validate_id_string(arg)

    else:
        raise exceptions.IncorrectTypeException(
            dedent(
                f"""
                component_id must be a string or dict, found {arg.component_id!r}
                """
            )
        )


def validate_id_dict(arg):