Include parameter name in JSON Schema error path on unmarshalling

[playpauseandstop]

Hi,

I've run into the problem, when I'm not able to show which invalid parameter raised an InvalidSchemaValue.

As InvalidSchemaValue contains a list of schema_errors (List[JsonSchemaValidationError]) I expect to have relative_path / absoulte_path filled for its items. But in reality all items have empty path / relative_path attributes (and absolute_path property).

I've managed to fix this by manually add parameter name as JSON Schem error path as,

 try:
 return unmarshaller(value)
 except InvalidSchemaValue as err:
 # Modify invalid schema validation errors to include parameter name
 if isinstance(param_or_media_type, Parameter):
 param_name = param_or_media_type.name

 for schema_error in err.schema_errors:
 schema_error.path = schema_error.relative_path = deque(
 [param_name]
 )

 raise err

instead of plain,

 return unmarshaller(value)

But would like to have path filled by openapi_core instead.

---

More details in playpauseandstop/rororo#53

[playpauseandstop]

Similar issue with CastError

It doesn't contain name attrib and it is impossible to find out which parameter name resulted casting error

[jgod]

Yeah this is a must

[jgod]

By the way, do you know how to determine the location (path, body, header, etc.) where the erroring parameter is located? It's not in the error object, either.

[osynge]

I feel this is resolved please see my answer to #241

[jyggen]

I don't think this is resolved. I need to differentiate between schema errors in the request body and in the request parameters (e.g. query string) and there seems to be no info about this on the exception intself nor the schema errors it contains.

[wickedest]

I don't know the code base too well, but I was poking around. Couldn't the parameter name just be mapped to the exception here?

 try:
 value = self._get_parameter(param, request)
 except MissingParameter:
 continue
 except (
 MissingRequiredParameter,
 DeserializeError,
 CastError,
 ValidateError,
 UnmarshalError,
 ) as exc:
 errors.append(exc)
 continue
 else:
 location = getattr(parameters, param_location)
 location[param_name] = value

[p1c2u]

Errors are definitely something to improve. However this will be a breaking change and I was waiting for this until I refactor validators. I will add errors refactor to the 0.17 roadmap.