Store data from html form into MySQL database in node js express app; In this tutorial, you will learn how to insert/save/store data from HTML form into MySQL DB using node js express app.
This tutorial will create a simple contact form using bootstrap 4 library and then create route in server.js file for inserting data into MySQL database in node js express app.
And as well you will learn how to send data from html form node js express route and store form data into mysql database using node js express app.
How to Insert Form Data in MySQL using Node js Express
Let’s follow the following steps to insert or save form data in MySQL database using node js express; as follows:
- Step 1 – Create Node Express js App
- Step 2 – Create Table in MySQL Database
- Step 3 – Install express flash ejs body-parser mysql dependencies
- Step 4 – Create HTML Markup Form
- Step 5 – Create Database Configuration File
- Step 6 – Create Server.js File and Database Connection File
- Step 7 – Start App Server
Step 1 – Create Node Express js App
Execute the following command on terminal to create node js app:
mkdir my-app cd my-app npm init -y
Step 2 – Create Table in MySQL Database
Execute the following sql query to create a table into your database:
CREATE TABLE `contacts` ( `id` int(11) NOT NULL, `f_name` varchar(100) NOT NULL, `l_name` varchar(100) NOT NULL, `email` varchar(100) NOT NULL, `message` text NOT NULL, `created_at` timestamp NOT NULL DEFAULT current_timestamp() ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
Step 3 – Install express flash ejs body-parser mysql Modules
Execute the following command on the terminal to express flash ejs body-parser mysql dependencies :
npm install -g express-generator npx express --view=ejs npm install npm install express-flash --save npm install express-session --save npm install body-parser --save npm install mysql --save
body-parser – Node.js request body parsing middleware which parses the incoming request body before your handlers, and make it available under req.body property. In other words, it simplifies the incoming request.
Express-Flash – Flash Messages for your Express Application. Flash is an extension of connect-flash with the ability to define a flash message and render it without redirecting the request.
Express-Session– Express-session – an HTTP server-side framework used to create and manage a session middleware.
Express-EJS– EJS is a simple templating language which is used to generate HTML markup with plain JavaScript. It also helps to embed JavaScript to HTML pages
Mysql – an open-source relational database management system (RDBMS).
Step 4 – Create HTML Markup Form
Create html form for inserting data into database; So visit views directory and create index.ejs file inside it. Then add the following code into it:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Node.js Express Save Data from Html Form to Mysql Database - Tutsmake.com</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
</head>
<body>
<div class="container mt-4">
<div class="card">
<div class="card-body">
<% if (messages.success) { %>
<p class="alert alert-success m2-4 mb-2"><%- messages.success %></p>
<% } %>
<h2>Node.js Express Save Data from Html Form to Mysql Database - Tutsmake.com</h2>
<form action="contact-us" method="POST">
<div class="form-group">
<label for="firstName">First Name</label>
<input type="text" class="form-control col-lg-9" id="f_name" aria-describedby="emailHelp" placeholder="Enter first name" name="f_name">
</div>
<div class="form-group">
<label for="lastName">Last Name</label>
<input type="text" class="form-control col-lg-9" id="l_name" aria-describedby="emailHelp" placeholder="Enter last name" name="l_name">
</div>
<div class="form-group">
<label for="exampleInputEmail1">Email address</label>
<input type="email" class="form-control col-lg-9" id="exampleInputEmail1" aria-describedby="emailHelp" name="email" placeholder="Enter email">
</div>
<div class="form-group">
<label for="exampleInputEmail1">Message</label>
<textarea name="message" class="form-control col-lg-9"></textarea>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</div>
</body>
</html>
Step 5 – Create Database Configuration File
Create database.js file and add the following code into it to connect your app to database:
var mysql = require('mysql');
var conn = mysql.createConnection({
host: 'localhost', // Replace with your host name
user: 'root', // Replace with your database username
password: '', // Replace with your database password
database: 'my-node' // // Replace with your database Name
});
conn.connect(function(err) {
if (err) throw err;
console.log('Database is connected successfully !');
});
module.exports = conn;
The above given Node.js code that creates a MySQL database connection using the mysql package.
The first line of the code imports the mysql package by using the require function to load the package into the mysql variable.
var mysql = require('mysql');
The createConnection method of the mysql object is then called to create a new connection to the database. This method takes an object that specifies the connection details such as the host, user, password, and database name. In this case, the code connects to a database named “my-node” running on the local machine using the root user account and no password.
var conn = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'my-node'
});
The connect method is then called on the conn object to establish a connection to the database. If an error occurs during the connection, the code throws an error.
conn.connect(function(err) {
if (err) throw err;
console.log('Database is connected successfully !');
});
Finally, the conn object is exported as a module, which allows other modules to use this database connection.
module.exports = conn;
This module can then be imported in another module using require to establish a connection to the database and perform database operations such as inserting, updating, or retrieving data.
Step 6 – Create Server.js
Create server.js file and import express flash session body-parser mysql dependencies in server.js; as shown below:
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var bodyParser = require('body-parser');
var flash = require('express-flash');
var session = require('express-session');
var db=require('./database');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({
secret: '123456catr',
resave: false,
saveUninitialized: true,
cookie: { maxAge: 60000 }
}))
app.use(flash());
/* GET home page. */
app.get('/', function(req, res, next) {
res.render('contact-us', { title: 'Contact-Us' });
});
app.post('/contact-us', function(req, res, next) {
var f_name = req.body.f_name;
var l_name = req.body.l_name;
var email = req.body.email;
var message = req.body.message;
var sql = `INSERT INTO contacts (f_name, l_name, email, message, created_at) VALUES ("${f_name}", "${l_name}", "${email}", "${message}", NOW())`;
db.query(sql, function(err, result) {
if (err) throw err;
console.log('record inserted');
req.flash('success', 'Data added successfully!');
res.redirect('/');
});
});
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// 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');
});
// port must be set to 3000 because incoming http requests are routed from port 80 to port 8080
app.listen(3000, function () {
console.log('Node app is running on port 3000');
});
module.exports = app;
The above given code is an example of a Node.js application using the Express framework to create a web server that listens on port 3000 for insert data into database from form.
The first several lines of the code import various Node.js modules and set up middleware for the Express application. The imported modules include http-errors, express, path, cookie-parser, morgan, body-parser, express-flash, express-session, and a custom database module. These modules are used to handle HTTP errors, create the web server, parse incoming requests, manage cookies, log requests and responses, and work with the database.
The views directory and the ejs view engine are also set up to render dynamic HTML templates.
After the middleware is set up, there are two routes defined for the Express application:
- The first route listens for GET requests to the root URL
/and renders thecontact-usview using theres.render()method. Thetitlevariable is passed to the view as a parameter. - The second route listens for POST requests to the
/contact-usURL and inserts data from the submitted form into the database. If there is an error inserting the data, an error is thrown. If the insertion is successful, a success flash message is created using thereq.flash()method, and the user is redirected to the root URL/.
Finally, the Express application listens on port 3000, and the server is started with app.listen(). The module.exports statement exports the app object for use in other modules.
Step 6 – Start App Server
You can use the following command to start node js app server:
//run the below command npm start after run this command open your browser and hit http://127.0.0.1:3000/
Conclusion
Store data from html form into MySQL database in node js express app; In this tutorial,you have learned how to insert data contact us from data into MySQL database using node js express app.
Hey, Thanks for making this blog it was very helpful, But what is that contact-us path that you have used in form action and some .render and .get functions. Can you Please clarify that.