CODEWITHSUNDEEP
javascriptnode.jsexpress
Quốc Nguyễn
Quốc Nguyễn

Reputation: 9

Cannot get value req.body.value in form

html form

<form method="post" action="/login">
    <input type="text" name="user_vi" placeholder="User name vi" value="usernametest">
    <input type="text" name="email_vi" placeholder="Email vi">
    <br/>
    <input type="text" name="user_en" placeholder="User name en">
    <input type="text" name="email_en" placeholder="Email en">
    <input type="submit" value="Submit">
</form>

app.js

var express = require('express');
var bodyParser = require('body-parser');
var app = express();
// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }));
// parse application/json
app.use(bodyParser.json());
app.set('views', './views'); // specify the views directory
app.set('view engine', 'ejs'); // register the template engine
app.get('/', function(req, res) {
    res.render('index', { title: 'Home page', message: 'Home there!' })
});
app.get('/login', function(req, res) {
    res.render('login', { title: 'Login', message: 'Login there!' })
});
app.post('/login', function(req, res) {
    var lang = 'vi';
    var user_name = 'user_' + lang;
    //console.log(user_name);
    //result = "user_vi"
    console.log(req.body.user_name);
    //result = undefined
    console.log(req.body.user_vi);
    //result = 'usernametest'
    res.render('login', {
        title: 'Login',
        message: 'Login there!'
    });
});
app.listen(3000, function() {
    console.log('connect port 3000');
});
var lang = 'vi';
var user_name = 'user_' + lang;
//console.log(user_name);
//result = "user_vi"
//console.log(req.body.user_vi);
//result = 'usernametest'
console.log(req.body.user_name);
//result = undefined

I cannot get value here (req.body.user_name). How can I get this ?

Upvotes: 0

Views: 7577

Answers (3)

subrahmanya bhat
subrahmanya bhat

Reputation: 598

req.body is an object. you are accessing the key wrongly.

your body object will look like this.

body{
"user_vi":"value",
"email_vi:"value",
"user_en":"value",
"email_en":"value"
}

req.body.user_name is the wrong way to access, because user_name is a variable, not the key. this will search body object for the key "user_name" which is an invalid key.

here is the correct way to access through a variable. use req.body[user_name]

Upvotes: 1

antoniodvr
antoniodvr

Reputation: 1259

Just access the request body by key:

request.body[key];

In your case:

request.body[user_name];

Will solve the problem!

Upvotes: 0

Rahul
Rahul

Reputation: 18557

You are using wrong element name with user_name which is actually user_en.

Once try like req.body.user_en.

Give it a try, it should work.

Upvotes: 1

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