Is there a way to change error handler for single endpoint?

[flisakl]

Hello,

I'm wondering if there is a way to change error handler for ValidationError for just single endpoint. I'm using Pydantic's model validator to check if user exists in database to keep the error messages consistent and my endpoint should return 401 status code instead of standard 422.

[vitalik]

Hi @flisakl

basically there are two options:

1. define custom exception handler

class MyException(Exception):
    pass

@api.exception_handler(MyException)
def custom_401_handler(request, exc):
    return api.create_response(
        request,
        {"message": "Invalid credentials or something"},
        status=401,
    )

@api.post("/some")
def some_view(request):
    if something:  # Example: user does not exist
        raise MyException("User not found")
    return {"detail": "User exists"}

2. do it in operations and define in docs:

@api.post("/some", response={200: SomeSchema, 401: OtherSchema}
def some(request):
    if some:
        return 401, {"some": "detail"}
   return {"normal": "response"}

[flisakl]

Thanks for the reply. With first option I've managed to solve my problem.