how to handle events depend on different router ?

[ChJJin]

At the first, thanks to the plugin, it helps me a lot.

now I use the middleware on different router, it's like:

router.post(path1, upload.fileHandler(option1));
router.post(path2, upload,fileHandler(option2));

and base on different router, I want to handler end event in different ways.
Actually, I can set req.type or something like that, but which I don't think is the best solution.
So, how can I do?

Thanks.