Forward request to alternate request handler instead of redirect

Question

I\'m using Node.js with express and already know the existence of response.redirect().

However, I\'m looking for more of a forward() funct

Answer 1

Express 4+ with nested routers

Instead of having to use the outside of route/function app, you can use req.app.handle

"use strict";

const express = require("express");
const app = express();

//
//  Nested Router 1
//
const routerOne = express.Router();

//  /one/base
routerOne.get("/base", function (req, res, next) {
  res.send("/one/base");
});

//  This routes to same router (uses same req.baseUrl)
//  /one/redirect-within-router -> /one/base
routerOne.get("/redirect-within-router", function (req, res, next) {
  req.url = "/base";
  next();
});

//  This routes to same router (uses same req.baseUrl)
//  /one/redirect-not-found -> /one/two/base (404: Not Found)
routerOne.get("/redirect-not-found", function (req, res, next) {
  req.url = "/two/base";
  next();
});

//  Using the full URL
//  /one/redirect-within-app -> /two/base
routerOne.get("/redirect-within-app", function (req, res, next) {
  req.url = "/two/base";

  // same as req.url = "/one/base";
  //req.url = req.baseUrl + "/base";

  req.app.handle(req, res);
});

//  Using the full URL
//  /one/redirect-app-base -> /base
routerOne.get("/redirect-app-base", function (req, res, next) {
  req.url = "/base";
  req.app.handle(req, res);
});



//
//  Nested Router 2
//
const routerTwo = express.Router();

//  /two/base
routerTwo.get("/base", function (req, res, next) {
  res.send("/two/base");
});

//  /base
app.get("/base", function (req, res, next) {
  res.send("/base");
});


//
//  Mount Routers
//
app.use("/one/", routerOne);
app.use("/two/", routerTwo);


//  404: Not found
app.all("*", function (req, res, next) {
  res.status(404).send("404: Not Found");
});