Error 404 Not Found Using Pug & Express and MongoDB - mongodb

Question

I am getting at 404 not found error using Express & MongoDB for a POST request. I tried to redo my routes numerous times, but am having trouble with the login page. I want to POST the information to my server and render a simple "Welcome Message."
Please advise.
Routes Folder:
var express = require('express');
var router = express.Router();
let mongoose = require('mongoose');
var User = require('../models/users')
//Get registration page from index button//
router.get('/register', function(req, res, next) {
res.render('register');
if (err) return console.error(err);
res.json(user);
});
//Post user data to database POST /register //
router.post('/register', function(req, res, next) {
res.render('Welcome to Fit 7');
})
var username = req.body.username;
var email = req.body.email;
var password = req.body.password;
var newuser = new User();
newuser.username = username;
newuser.email = email;
newuser.password = password;
newuser.save(function(err, savedUser) {
if(err) {
console.log(err);
return res.status(500).send();
}
return res.status(200).send();
})
module.exports = router;
App JS Code:
// var createError = require('http-errors');
var express = require('express');
var app = express();
var path = require('path');
// var cookieParser = require('cookie-parser');
var logger = require('morgan');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');
var pug = require('pug');
// var indexRouter = require('./routes/index');
var workouts = require('./routes/workouts');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname, 'public')));
// view engine setup
app.set('view engine', 'pug');
app.set('views', path.join(__dirname, 'views'));
// app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));
// app.use('/', indexRouter);
// app.use('/api/workouts', workouts);
app.get('/', function (req, res) {
res.render('index')
})
//Registration Route for New Users
app.get('/register', function (req, res) {
res.render('register')
});
app.get('/home', function (req, res) {
res.render('home');
});
app.get('/workout/new', function (req, res) {
res.render('workoutform');
});
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
Pug Template Code:
body(data-gr-c-s-loaded='true', style='')
.container
form(action='/register', method='post').form-signin
h1.form-signin-heading Login to Fit-7
label.sr-only(for='username') Name
input#name.form-control(type='username', placeholder='username',
required='', autofocus='')
label.sr-only(for='email') Email address
input#inputEmail.form-control(type='email', placeholder='email address',
required='', autofocus='')
label.sr-only(for='password') Password
input#password.form-control(type='password', placeholder='password',
required='')
button.btn.btn-lg.btn-primary.btn-block(type='submit') Sign in
span._hsShareImage.hsShareImage  
loom-container#lo-engage-ext-container
loom-shadow(data-reactroot='', classname='resolved')

Answer 1

You dont seem to import the router anywhere in your app.js. First add
var registerRoute = require("./path/to/route.js");
after your other requires. Then add
app.use(registerRoute)
in place of this line:
app.get('/register', function (req, res) {
res.render('register')
});

Answer 2

I still dont have a reputation to like the comment above or comment, but the answer was very helpful.
But my problem was that I had the bellow line:
app.use('/', routes);
So I changed to where my application was
app.use('/Live/api', routes);
I'm using express with pug