node.js - Redirect POST request to PUT in express -

background: i've written rest api express, extends , modifies old api wrote in python. old api wasn't restful: "modify/insert/delete" requests done via post, , query structure different new api.

in short, want write middleware on new api redirect requests in form of old api, handled routes of new api. middleware needs self-contained, i.e. don't want individual routes handle redirection logic.

this requires redirecting requests, obviously. know can redirect method, in (slight pseudocode):

app.use('/', (req, res, next) => {   if (requestisold(req)) {     return res.redirect(newroute(req));   }    return next(); }); 

and know can ask client make new request the same method, with:

res.redirect(307, newroute); 

however, leads post requests modify/delete data going post requests on new api, handled "add" request handlers.

how redirect post requests , request method changed e.g. put or delete?