INNER CODE UNIT · Python

validation_exception_handler

mfmezger/conversational-agent-langchain · src/agent/api.py:103

async def validation_exception_handler(request: Request, exc: RequestValidationError) -> Response:
    """Use OpenAI validation envelopes only below the compatibility prefix."""
    if not _is_openai_path(request.url.path):
        return await request_validation_exception_handler(request, exc)

    error = exc.errors()[0]
    location = [str(part) for part in error["loc"] if part != "body"]
    param = ".".join(location) or None
    unsupported = error["type"] == "extra_forbidden"
    message = f"Unsupported field: `{param}`." if unsupported else error["msg"]
    return _openai_error_response(
        status_code=400,
        message=message,
        error_type="invalid_request_error",
        param=param,
        code="unsupported_parameter" if unsupported else "invalid_value",
    )

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