Node.js + express : rewrite url path - node.js

Question

I'd like to know if it's possible to rewrite an url with express.
I actually have this code :
var http, express, app;
http = require("http");
express = require("express");
app = express();
app.use(express.json())
app.use(express.urlencoded())
.post("/ajax_login", function (req, res) {
"use strict";
http.get({ host: "localhost", port: 8080, path: "/users/" + req.body.email + "/email" }, function (resp) {
resp.setEncoding("utf8");
resp.on("data", function (data) {
json = JSON.parse(data);
if (json.password.password === sha1(req.body.password)) {
res.render("home.ejs");
} else {
res.render("login.ejs", { email : req.body.email, error : "password is not good" });
}
});
});
})
.get("/login", function (req, res) {
"use strict";
res.render("login.ejs");
})
.listen(3030);
I call /ajax_login from a form :
<form method="post" action="/ajax_login">
<div class="form-group">
<label for="email">Email address</label>
<input type="email" class="form-control" id="email" name="email" />
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" name="password" />
</div>
<button type="submit" class="btn btn-primary">Connection</button>
</form>
The problem is : when I call /ajax_login, after res.render my HTML code on my browser is changed, but the url still /ajax_login.
How I can change this URL ?
I know the javascript solution :
window.history.pushState("", document.title, "/login");
But, I'd like to know if a solution exist from the server.
Thanks

Answer 1

I would add an error to the request locals, redirect to login, and then check if an error exists when rendering the login page.
.post("/ajax_login", function (req, res) {
"use strict";
...
if (password && email IS OK) {
res.locals.errorMSG = "password is not good";
res.redirect("/login"); //redirect vs render
} else {
res.render("home.ejs");
}
})
.get("/login", function (req, res) {
"use strict";
res.render("login.ejs", {error: res.locals.errorMSG || null});
})
res.locals
res.redirect