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Why does my text not showing up after a post request - MongoDB

I am currently making a basic twitter clone. Everything went perfect before my text started not showing up when I made a post request.
What would be the problem?
My code:
app.js:
var express = require("express"),
mongoose = require("mongoose"),
bodyParser = require("body-parser"),
ejs = require("ejs");
var app = express();
mongoose.connect("mongodb://localhost:27017/twitter_clone", {
useNewUrlParser: true,
useUnifiedTopology: true
})
.then(() => console.log("CONNECTED TO DB"))
.catch((error) => console.log(error.message));
app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static(__dirname + '/public'));
app.set("view engine", "ejs");
// MONGODB TWEETS SCHEMA
var tweetsSchema = new mongoose.Schema({
text: String
})
var Tweets = mongoose.model("Tweets", tweetsSchema);
//================
//RESTFUL ROUTES
//================
// INDEX ROUTES
app.get("/", function(req, res){
Tweets.find({}, function(err, allTweets){
if(err){
console.log(err);
} else {
res.render("home", {newtweet:allTweets});
}
})
})
app.get("/explore", function(req, res){
res.render("explore");
})
app.get("/notifications", function(req, res){
res.render("notifications");
})
app.get("/messages", function(req, res){
res.render("messages");
})
app.get("/bookmarks", function(req, res){
res.render("bookmarks");
})
app.get("/lists", function(req, res){
res.render("lists");
})
app.get("/profile", function(req, res){
res.render("profile");
})
app.get("/more", function(req, res){
res.render("more");
})
// NEW ROUTES
app.get("/tweet/new", function(req, res){
res.render("new");
})
// POST
app.post("/posttweet", function(req, res){
var text = req.body.text;
var newtweet = {text: text};
Tweets.create(newtweet, function(err, newTweet){
if(err){
console.log(err)
} else {
res.redirect("/");
}
})
})
//DELETE
app.get("/delete/:id", function(req,res){
mongoose.model("Tweets").remove({_id:req.params.id}, function(err, delData){
res.redirect("/");
})
})
app.listen(5000, function(){
console.log("Server listening on port 5000");
})
home.ejs:
<form action="/tweet/new">
<input class="bluebutton" type="submit" value="Tweet" />
</form>
<div class="tweets">
<% newtweet.forEach(function(newtweet){ %>
<div class="showtweets">
<p class="tweetcontent">
<%= newtweet.text %>
</p>
</div>
<% }) %>
</div>
I asked a similar question before and I found a solution and it worked well for a while, but I made some changes and now it's not working poroperly.

Create a form that sends a post request to "/posttweet":
<form action="/posttweet" method="post">
<input type="text" name="text" />
<input type="submit" value="Tweet" />
</form>
This should make the right request to your single post route.
Edit
Tip: Make sure to send back some response from your handlers, even if its an error, otherwise your server will just hang.

Redirect to another url after post request (AJAX, EXPRESS)

As a part of learning node.js servers I'm working on a little log-in website. There's a site you can open and enter your username which will then be sent through an ajax post request to the server and saved into an array of all users. I wanna make it so that after you submit your username, you will be redirected to another page, unique for every username, where you will be able to see the information about you username. Sort of a 'manage your account' site.
However, I can't seem to figure out a way to redirect me to this page after I have submitted an username.
Say for example you submit a username 'kokot' and it's the 3rd username that's been submitted so far. Thus, in the 'players' array, your user object will look something like this {id: 2, username: 'kokot'}.
Now I want to redirect you to the url localhost:2000/players/2 to see the info about your specific username.
NODE JS
const express = require('express');
const server = express();
const bodyParser = require('body-parser');
server.use(bodyParser.urlencoded({extended: false}));
server.use(bodyParser.json());
let players = [];
//loads the home page
server.get('/', (req, res) =>{
res.sendFile(__dirname + '/home.html');
});
//loads the page with the list of players
server.get('/players', (req, res) =>{
res.send(players);
});
server.get('/player/:id', (req, res) =>{
res.send(players[req.params.id]);
});
//takes a new username and saves it to players array
server.post('/', (req, res) =>{
console.log('NEW PLAYER: ' + req.body.username);
players.push({
id: players.length,
username: req.body.username
});
});
/////////////////////////////////////////////////////////////////////////////
server.listen(2000, () => console.log('LISTENING ON PORT 2000'));
HTML
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<title>Home</title>
</head>
<body>
<h1>PISKVOREC</h1>
<form id="userForm">
username
<input type="text" name="text" id="userFormInput">
<input type="submit" name="Submit" id="userFormSubmit">
</form>
<script>
$(document).ready(()=>{
let homeUrl = 'http://localhost:2000';
let $userForm = $('#userForm');
let $userFormSubmit = $('#userFormSubmit');
//submits a new username to the server
$userFormSubmit.click(() =>{
$.post(homeUrl, {
username: $('#userFormInput').val()
}, function(){
console.log('USERNAME SUBMITTED TO SERVER');
});
$.
});
////////////////////
});
</script>
</body>
</html>
Thank you for you responses and ideas
Have a nice day

Sure, see below:
server.post('/', (req, res) =>{
console.log('NEW PLAYER: ' + req.body.username);
players.push({
id: players.length,
username: req.body.username
});
res.redirect(`/player/${req.body.username}`);
});
UPDATE
Demo with vanilla Express.js app
app.js
var express = require('express');
var path = require('path');
var bodyParser = require('body-parser');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');
app.use(bodyParser.urlencoded({extended: false}));
app.use(express.static(path.join(__dirname, 'public')));
app.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});
app.post('/this', (req, res, next) => {
res.redirect(`/that/${req.body.username}`);
});
app.get('/that/:id', (req, res, next) => {
res.send(req.params);
});
module.exports = app;
index.hbs
<form method="post" action="/this">
<input id="username" name="username" value="vader" type="text" />
<button type="submit">Submit</button>
</form>
results in a redirect to: http://localhost:3000/that/vader

How to parse POST response body in Node

const express = require("express");
const bodyParser = require("body-parser");
const app = express();
app.get(bodyParser.urlencoded({extended: true}));
app.get("/", function(req, res){
res.sendFile(__dirname + "/index.html");
});
app.post("/", function(req, res){
console.log(req.body.crypto);
});
app.listen(3000, function(){
console.log("server is running in port 3000");
});
const express = require("express");
const bodyParser = require("body-parser");
const app = express();
app.get(bodyParser.urlencoded({extended: true}));
app.get("/", function(req, res){
res.sendFile(__dirname + "/index.html");
});
app.post("/", function(req, res){
console.log(req.body.crypto);
});
app.listen(3000, function(){
console.log("server is running in port 3000");
});
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>Bitcoin ticker</title>
</head>
<body>
<h1>Bitcoin Ticker</h1>
<form action="/" method="post">
<select name="crypto">
<option value="BTC">Bitcoin</option>
<option value="ETC">Ethereum</option>
<option value="LTC">Litecoins</option>
</select>
<select name="fiat">
<option value="USD">US Doller</option>
<option value="GBP">GB Pounds</option>
<option value="EUR">EU Euroes</option>
</select>
<button type="submit" name="button">Check</button>
</form>
</body>
</html>
have an issue in javascript code when iam requesting for post request the browser says Cannot read property 'crypto' of undefined
when iam running the code there is no error but when iam selecting cannot read
property "crypto"
and i think the errror might be in here
console.log(req.body.crypto);

Your req.body is undefined,
you have to make this line
app.get(bodyParser.urlencoded({extended: true}));
to
app.use(bodyParser.urlencoded({extended: true}));

Looks like your req.body is undefined.
Guess the problem is with the body-parser.
Try changing this line
app.get(bodyParser.urlencoded({extended: true}))
To
app.use(bodyParser.urlencoded({extended: true}))
Instead of applying body-parser with app.get, do it with app.use

Subburaj and Ron537 are both correct because body-parser is a middleware and in express you use the method use to include a middleware to your express program. in your case to include the body-parser module/middleware in your app, do app.use(bodyParser.urlencoded({extended: true})) if you want to be posting both sub-document and app.use(bodyParser.urlencoded({extended: false})) if you dont want to be posting sub document

Express.js routers post request returns 404

My express server returns 404 error when i try to send request from html form. However get request works fine. I have separated files for server and routes. I can't make requests in app.js, because there are too many of them (for different pages). I want to make post-insert request to db, but i just can't get any information from my form.
Is there something i missing?
my html form (ejs precisely)
<form action="/add" method="POST">
<input type="text" name="title" placeholder="Event name" />
<input type="text" name="subcategory" placeholder="Category" />
<input type="text" name="date" placeholder="Date" />
<input type="text" name="place" placeholder="Place" />
<input type="text" name="organisator" placeholder="Organisator" />
<textarea name="description" placeholder="Description" onkeyup="adjust_textarea(this)"></textarea>
<input type="submit" value="Add" />
</form>
my App.js file (error on 404 handler)
const express = require('express');
const path = require('path');
const logger = require('morgan');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
var app = express();
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
//db connection
var mysql = require("mysql");
app.use(function(req, res, next){
res.locals.connection = mysql.createConnection({
host : 'localhost',
user : 'root',
password : 'mypassword',
database : 'mydb'
});
res.locals.connection.connect();
next();
});
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', require('./routes/index'));
app.use('/events', require('./routes/events'));
//handling errors
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
app.use(function(err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.render('error');
});
//server init
var http = require('http');
var server = http.createServer(app);
server.listen(4000);
if(server.listening){
console.log('Server is listening on port 4000');
}
module.exports = app;
my ./routes/events.js file
const express = require('express');
const router = express.Router();
router.get('/', function (req, res, next) {
let query = '*select query*';
res.locals.connection.query(query, function (error, results, fields) {
if (error) throw error;
res.render('index', { title: 'Events', data: results });
});
});
router.post('/add', function (req, res) {
var obj = req.body.title;
console.log(obj);
res.redirect('/events');
});
What i see in browser

You have the 'add' endpoint listed in in your 'routes/events.js' file, which causes the structure of the final route to be '/events/add.' In your form, you are sending to the '/add' endpoint so to fix the issue, either change the action prop on the form to '/events/add' or move the '/add' endpoint into it's own route like this:
router.post('/add', function(req, res) {
var obj = req.body.title;
console.log(obj);
res.redirect('/events');
});

How to get GET multiple variables in Express.js on Node.js?

I am trying to get Form data from html page to Node Js server .
My html file is index.html
<body>
<nav>
<ul>
<li>
Add Product
<div class="dialog" style="display:none">
<div class="title">Add Product</div>
<form action="" method="get">
<input id = "name" name="name" type="text" placeholder="Product Name"/>
<input name="code" type="text" placeholder="Product Code"/>
<input name="category" type="text" placeholder=" Category"/>
<input name="brand" type="text" placeholder="Brand"/>
<input type="submit" value="Ok"/>
</form>
</div>
</li>
<li class="radio">
</li>
</ul>
</div>
</nav>
<p></p>
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src="js/index.js"></script>
</body>
after submitting the form there is no action perform by the server just get the url with all details
and My server is server.js
var express = require("express"),
app = express(),
bodyParser = require('body-parser'),
errorHandler = require('errorhandler'),
methodOverride = require('method-override'),
hostname = process.env.HOSTNAME || 'localhost',
port = parseInt(process.env.PORT, 10) || 4004,
publicDir = process.argv[2] || __dirname + '/public';
var exec = require('child_process').exec;
var fs = require('fs');
//Show homepage
app.get("/", function (req, res) {
res.redirect("/index.html");
console.log("shubh ");
});
app.get("/index/", function (req, res) {
res.redirect("/index.html");
console.log("shubham ");
});
app.get("/index/:name", function (req, res){
console.log("shubham batra");
var keyword = req.query.code;
console.log(keyword);
//res.send('You sent the name "' + req.body.name + '".');
console.log(res.body);
});
app.use(errorHandler({
dumpExceptions: true,
showStack: true
}));
//Search page
app.use(methodOverride());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(express.static(publicDir));
app.use(errorHandler({
dumpExceptions: true,
showStack: true
}));
console.log("Server showing %s listening at http://%s:%s", publicDir, hostname, port);
app.listen(port);

Your form action is '', therefor the URL created by the form will be
/?name=xxx&code=yyy etc
From your routing, it seems like you're expecting the url to be in the form of /xxx?code=yyy.
Make your form action '/search' and add the following JS.
app.get("/search", function (req, res){
console.log("shubham batra");
var keyword = req.query.code;
console.log(keyword);
//res.send('You sent the name "' + req.query.name + '".');
});
As your making a get request, request.body won't be set.

You can use as multiple as you want like:
var code = req.query.code;
var category = req.query.category;
var brand = req.query.brand;
req.query if its GET request and req.body if its POST.

change the app.get("/index/:name", function (req, res){
to app.get("/index/:name?", function (req, res){
that your route will match /index/ and /index/anyname routes
and change form action to "/" or something like "/action"