code-boxx/0-NODE-SAVE-FORM.MD

## 0-NODE-SAVE-FORM.MD

      
    Raw
  

              0-NODE-SAVE-FORM.MD
            
          
    NODEJS EXPRESS SAVE FORM INTO DATABASE

https://code-boxx.com/save-html-form-into-database-nodejs/
NOTES


Run unpack.bat (Windows) unpack.sh (Linux/Mac). This will automatically:

Install required modules - npm i sqlite3 express multer
Create the dummy database - node 1b-create.js
Start the Express server - node 3-server.js.


Access http://localhost/ in your browser.

LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1a-dummy.sql
CREATE TABLE dummy (
  id INTEGER,
  email TEXT NOT NULL,
  txt TEXT NOT NULL,
  PRIMARY KEY("id" AUTOINCREMENT)
);

## 1b-create.js
// (A) REQUIRED MODULES
const fs = require("fs"),
      sqlite = require("sqlite3");

// (B) CREATE DUMMY DATABASE
const db = new sqlite.Database("dummy.db", err => {
  if (err) { console.log(err); }
  else {
    db.exec(fs.readFileSync("1a-dummy.sql", "utf8"));
    db.close();
    console.log("Database created");
  }
});

## 2-form.html
<!DOCTYPE html>
<html>
  <head>
    <title>Save Form Into Database Demo</title>
    <meta charset="utf-8">
    <style>
    /* (X) NOT IMPORTANT - COSMETICS */
    * {
      font-family: Arial, Helvetica, sans-serif;
      font-size: 1em;
      box-sizing: border-box;
    }
    form {
      max-width: 400px;
      padding: 20px;
      border: 1px solid #eee;
      background: #f7f7f7;
    }
    label, input {
      display: block;
      width: 100%;
    }
    label { padding: 10px 0; }
    input { padding: 10px; }
    input[type=text], input[type=email] { border: 1px solid #d1d1d1; }
    input[type=submit] {
      margin-top: 20px;
      border: 0;
      cursor: pointer;
      color: #fff;
      background: #515fbf;
    }
    </style>
  </head>
  <body>
    <!-- (A) HTML FORM -->
    <form method="post" id="demo" onsubmit="return goForm()">
      <label>Email</label>
      <input type="email" name="email" required value="jon@doe.com">
      <label>Text</label>
      <input type="text" name="txt" required value="It works!">
      <input type="submit" value="Go!">
    </form>

    <!-- (B) AJAX SUBMIT -->
    <script>
    function goForm () {
      // (B1) GET HTML FORM
      var data = new FormData(document.getElementById("demo"));

      // (B2) AJAX SUBMIT
      fetch("/go", { method:"POST", body:data })
      .then(res => res.text())
      .then(txt => alert(txt))
      .catch(err => console.error(err));
      return false;
    }
    </script>
  </body>
</html>

## 3-server.js
// (A) LOAD MODULES
const path = require("path"),
      multer = require("multer"),
      bodyParser = require("body-parser"),
      express = require("express"),
      sqlite = require("sqlite3");

// (B) EXPRESS SERVER & MIDDLEWARE
const app = express();
app.use(multer().array());
app.use(bodyParser.urlencoded({ extended: false }));

// (C) SERVE DUMMY HTML FORM
app.get("/", (req, res) => res.sendFile(path.join(__dirname, "/2-form.html")));

// (D) PROCESS SUBMITTED FORM
app.post("/go", (req, res) => {
  // (D1) SAVE INTO DATABASE
  let db = new sqlite.Database("dummy.db");
  db.run(`INSERT INTO dummy (email, txt) VALUES (?,?)`, [
    req.body.email, req.body.txt
  ], function (err) {
    if (err) { console.log(err); }
    else { console.log(`INSERTED - ID ${this.lastID}`); }
  });
  db.close();

  // (D2) RESPOND
  res.status(200);
  res.send("OK");
});

// (E) START!
app.listen(80, () => console.log(`Server running at port 80`));

## unpack.bat
call npm i sqlite3 express multer
node 1b-create.js
node 3-server.js

## unpack.sh
source "npm i sqlite3 express multer"
node ./1b-create.js
node ./3-server.js
	CREATE TABLE dummy (
	id INTEGER,
	email TEXT NOT NULL,
	txt TEXT NOT NULL,
	PRIMARY KEY("id" AUTOINCREMENT)
	);
	// (A) REQUIRED MODULES
	const fs = require("fs"),
	sqlite = require("sqlite3");

	// (B) CREATE DUMMY DATABASE
	const db = new sqlite.Database("dummy.db", err => {
	if (err) { console.log(err); }
	else {
	db.exec(fs.readFileSync("1a-dummy.sql", "utf8"));
	db.close();
	console.log("Database created");
	}
	});
	<!DOCTYPE html>
	<html>
	<head>
	<title>Save Form Into Database Demo</title>
	<meta charset="utf-8">
	<style>
	/* (X) NOT IMPORTANT - COSMETICS */
	* {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 1em;
	box-sizing: border-box;
	}
	form {
	max-width: 400px;
	padding: 20px;
	border: 1px solid #eee;
	background: #f7f7f7;
	}
	label, input {
	display: block;
	width: 100%;
	}
	label { padding: 10px 0; }
	input { padding: 10px; }
	input[type=text], input[type=email] { border: 1px solid #d1d1d1; }
	input[type=submit] {
	margin-top: 20px;
	border: 0;
	cursor: pointer;
	color: #fff;
	background: #515fbf;
	}
	</style>
	</head>
	<body>
	<!-- (A) HTML FORM -->
	<form method="post" id="demo" onsubmit="return goForm()">
	<label>Email</label>
	<input type="email" name="email" required value="jon@doe.com">
	<label>Text</label>
	<input type="text" name="txt" required value="It works!">
	<input type="submit" value="Go!">
	</form>

	<!-- (B) AJAX SUBMIT -->
	<script>
	function goForm () {
	// (B1) GET HTML FORM
	var data = new FormData(document.getElementById("demo"));

	// (B2) AJAX SUBMIT
	fetch("/go", { method:"POST", body:data })
	.then(res => res.text())
	.then(txt => alert(txt))
	.catch(err => console.error(err));
	return false;
	}
	</script>
	</body>
	</html>
	// (A) LOAD MODULES
	const path = require("path"),
	multer = require("multer"),
	bodyParser = require("body-parser"),
	express = require("express"),
	sqlite = require("sqlite3");

	// (B) EXPRESS SERVER & MIDDLEWARE
	const app = express();
	app.use(multer().array());
	app.use(bodyParser.urlencoded({ extended: false }));

	// (C) SERVE DUMMY HTML FORM
	app.get("/", (req, res) => res.sendFile(path.join(__dirname, "/2-form.html")));

	// (D) PROCESS SUBMITTED FORM
	app.post("/go", (req, res) => {
	// (D1) SAVE INTO DATABASE
	let db = new sqlite.Database("dummy.db");
	db.run(`INSERT INTO dummy (email, txt) VALUES (?,?)`, [
	req.body.email, req.body.txt
	], function (err) {
	if (err) { console.log(err); }
	else { console.log(`INSERTED - ID ${this.lastID}`); }
	});
	db.close();

	// (D2) RESPOND
	res.status(200);
	res.send("OK");
	});

	// (E) START!
	app.listen(80, () => console.log(`Server running at port 80`));
	call npm i sqlite3 express multer
	node 1b-create.js
	node 3-server.js
	source "npm i sqlite3 express multer"
	node ./1b-create.js
	node ./3-server.js