Posting Form data to MySQL using nodejs w/ Express

Question

I am trying to write a simple server.js in Node, that posts form data from my html file, into MySQL. But I am getting a Syntax error. I will post the code and error below. I'm struggling to resolve this issue.

<head>

    <title>Learning Node Server</title>
    <link rel="stylesheet" href="style.css" />

</head>


<body>

    <div class="header">
        <h1>Learning Node and JS</h1>
        <p>With Ninad</p>       
    </div>

    <form action="/data" method="post">
        <label for="name">Enter your name in the database</label>
        <input type="text" name="name">
        <input type="submit" value="submit" />
        </form>


    <div class="container"></div>

    <script type="text/javascript" src="main.js"></script>

</body>

var express    = require('express');
var app        = express();
var mysql      = require('mysql');
var bodyParser = require('body-parser');



app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
//app.use(express.json());
//app.use(express.urlencoded());
//app.use(app.router);
app.use(express.static('public'));


var connection = mysql.createConnection({

  host     : 'localhost',
  user     : 'root',
  password : '3748',
  database : 'nodedb'

});

connection.connect();


app.get('/', function (req, res) {

    res.sendFile(__dirname + '/node.html');

});


app.post('/data', function(req, res){

    var username=req.body.name;

    connection.query("INSERT INTO `names` (name) SET ?", username.toString(), function(err, result){
        if(err) throw err;

        console.log("1 record inserted");
    });

    res.send(username);

});

//connection.end();

app.listen(3000, function () {
console.log('Example app listening on port 3000');
});

If I entered yahoo2 as the name, this is the error I get-

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SET 'yahoo2'' at line 1 at Query.Sequence._packetToError (/home/ninad/node-workspace/node_modules/mysql/lib/protocol/sequences/Sequence.js:52:14)

Nicholas · Accepted Answer · 2017-08-26 05:10:01Z

2

It should be this,

app.post('/data', function(req, res){
    var username=req.body.name;
    connection.query("INSERT INTO `names` (name) VALUES (?)", username.toString(), function(err, result){
        if(err) throw err;
            console.log("1 record inserted");
        });
    res.send(username);
});

answered Aug 26, 2017 at 5:10

Nicholas

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2 Comments

Charles Merriam Over a year ago

Good of you to add an answer! You could make it better by adding an explanation of why you changed it. :) .

Nicholas Over a year ago

Inserting values has the syntax as follows: INSERT INTO table (column, column, ...) VALUES (value, value, ...)

Syed Ayesha Bebe · Accepted Answer · 2017-08-26 10:22:47Z

Try this code. Create a views folder and place this jade file in it. This is my jade file I named it as

//index.jade

<html>
<head>
<title> test </title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<form action="/submit" method="POST">
<fieldset>
<label for="name">Name: </label>
<input type="text" id="name" name="name" />
<br/>
<label for="email">Email: </label>
<input type="email" id="email" name="email"  />
<br/>
<label for="description">Description: </label>
<textarea id="description" name="description"></textarea>
<br/>
<input type="submit" value="create profile" />
</fieldset>
</form>
</body>
</html>

This is my server code save it as index.js

var express = require('express');
var router = express.Router();
var bodyParser = require('body-parser');
var mysql = require('mysql');
var jade = require('jade');
var con = mysql.createConnection({
     host: "localhost",
     user: "root",
     password: "",
     database: "test"
});
var app=express();
var urlencodedParser = bodyParser.urlencoded({ extended: false });
app.set('view engine', 'jade');
app.get('/submit',function(req,res){
res.render('index');
});
app.post('/submit',urlencodedParser, function(req, res, next) {
    console.log(req.body.name);
    console.log(req.body.email);
    console.log(req.body.description);
    con.connect(function(err) {
  if (err) throw  err;
  console.log("connected");
  var sql = "INSERT INTO `form`(`name`,`email`, `description`) VALUES ('"+req.body.name+"','"+req.body.email+"','"+req.body.description+"')";
  con.query(sql, function(err, result)  {
   if(err) throw err;
   console.log("table created");
  });
});

  res.render('index', { title: 'Express' });
});
app.listen(3000,function(){
    console.log("Sever listening on port 3000");
});

Before running the server create a database here I created my database with the name test. And next create a table in it. Here I created a table with the name form.Run the node server as node index.js. And in browser type http://localhost:3000/submit. And next look at the database.Hope this helps...

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