Overwrite Sanic add_route

Questions and Help
#1

Hello, I’m lokking for a way to work with custom methods in the class based view. e.g. get_by_id(), delete_by_id().

I already did subclass the HTTPMethodView class to handle and dispatch the requests:

class BaseHandler(HTTPMethodView):
    @classmethod
    def as_view(
        cls, suffix: str = "", *class_args: Any, **class_kwargs: Any
    ) -> "RouteHandler":

    ...

    def dispatch_request(
        self, request: "Request", *args: Any, **kwargs: Any
    ) -> "HTTPResponse":
      
        suffix = getattr(self, "_suffix", "")
        method = request.method.lower()

        if suffix:
            handler = getattr(self, "{0}_{1}".format(method, suffix), None)
        else:
            handler = getattr(self, method, None)

        ...

But from what I see in the Sanic code https://github.com/sanic-org/sanic/blob/a64d7fe6edb65ac60537f91d4d6c34fe7bc224b9/sanic/mixins/routes.py#L283:

# Handle HTTPMethodView differently
if hasattr(handler, "view_class"):
    methods = set()

    for method in HTTP_METHODS:
        view_class = getattr(handler, "view_class")
        _handler = getattr(view_class, method.lower(), None)
        if _handler:
            methods.add(method)
            if hasattr(_handler, "is_stream"):
                stream = True

The routes are not declared.

Question is, is there a way to overwrite the Sanic application routes declaration to handle this case ? because when I set app.add_route = functools.partial(custom_add_route, sanic_app) I got the following:

Setting variables on Sanic instances is not allowed. You should change your Sanic instance to use instance.ctx.add_route instead

Thanks for the help.

#2

Already found a solution for this.

I will just call app.route directly:

app.route(
            uri=uri,
            methods=methods,
            host=host,
            strict_slashes=strict_slashes,
            stream=stream,
            version=version,
            name=name,
            version_prefix=version_prefix,
            error_format=error_format,
            unquote=unquote,
            **ctx_kwargs,
        )(handler)