From ed24198186344643285d2b7a38c4bc4c58abdd27 Mon Sep 17 00:00:00 2001 From: Yurii Karabas <1998uriyyo@gmail.com> Date: Sun, 8 Feb 2026 14:58:27 +0100 Subject: [PATCH] Fix alias in loc --- fastapi/dependencies/utils.py | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py index 2eff34a15..4aadabb9d 100644 --- a/fastapi/dependencies/utils.py +++ b/fastapi/dependencies/utils.py @@ -805,16 +805,19 @@ def request_params_to_args( params_to_process[key] = received_params.get(key) for field in fields: - in_ = getattr(field.field_info, "in_", params.ParamTypes.query) + field_info = field.field_info + assert isinstance(field_info, params.Param), ( + "Params must be subclasses of Param" + ) if lenient_issubclass(field.field_info.annotation, BaseModel): - loc: tuple[str, ...] = (in_.value,) + loc: tuple[str, ...] = (field_info.in_.value,) v_, errors_ = _validate_value_with_model_field( field=field, value=params_to_process, values=values, loc=loc ) else: value = _get_multidict_value(field, received_params) - loc = (in_.value, field.alias) + loc = (field_info.in_.value, get_validation_alias(field)) v_, errors_ = _validate_value_with_model_field( field=field, value=value, values=values, loc=loc )