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Leszek Klich
2025-11-27 16:33:42 +01:00
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Copyright <yyyy, yyyy> The Open Group
Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
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OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group
shall not be used in advertising or otherwise to promote the sale, use
or other dealings in this Software without prior written authorization
from The Open Group.

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# Przykład MVC CRUD w Node.js + Express + SQLite + Sequelize
Przykład aplikacji CRUD w NodeJS, framework Express i ORM
## Struktura katalogów
```
my-app/
├── app.js
├── package.json
├── config/
│ └── database.js
├── models/
│ └── customer.js
├── controllers/
│ └── customerController.js
├── routes/
│ └── customerRoutes.js
└── views/
├── layout.ejs
├── index.ejs
├── create.ejs
├── edit.ejs
└── show.ejs
```
## Instalacja
Po sklonowaniu repozytorium otwórz folder projektu w Visual Studio Code i w temrminalu:
npm install
npm start
## Uruchomienie serwera
npm run start
http://localhost:3000

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const express = require('express');
const bodyParser = require('body-parser');
const methodOverride = require('method-override');
const expressLayouts = require('express-ejs-layouts');
const path = require('path');
const db = require('./config/database');
// Test połączenia z bazą
db.authenticate()
.then(() => console.log('Połączono z SQLite.'))
.catch(err => console.error('Błąd połączenia:', err));
// Inicjalizacja Express
const app = express();
// Uzycie expressLayout i konfiguracja ejs
app.use(expressLayouts);
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));
app.set('layout', 'layout');
app.use(bodyParser.urlencoded({ extended: false }));
app.use(methodOverride('_method'));
// Routing
const customerRoutes = require('./routes/customerRoutes');
app.use('/customers', customerRoutes);
// Strona główna przekierowuje do listy klientów
app.get('/', (req, res) => {
res.redirect('/customers');
});
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => console.log(`Serwer działa na porcie ${PORT}`));

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const { Sequelize } = require('sequelize');
const sequelize = new Sequelize({
dialect: 'sqlite',
storage: './database.sqlite'
});
module.exports = sequelize;

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const Customer = require('../models/customer');
exports.list = async (req, res) => {
const customers = await Customer.findAll();
res.render('index', { customers });
};
exports.show = async (req, res) => {
const customer = await Customer.findByPk(req.params.id);
res.render('show', { customer });
};
exports.createForm = (req, res) => {
res.render('create');
};
exports.create = async (req, res) => {
await Customer.create(req.body);
res.redirect('/customers');
};
exports.editForm = async (req, res) => {
const customer = await Customer.findByPk(req.params.id);
res.render('edit', { customer });
};
exports.update = async (req, res) => {
await Customer.update(req.body, { where: { id: req.params.id } });
res.redirect('/customers');
};
exports.delete = async (req, res) => {
await Customer.destroy({ where: { id: req.params.id } });
res.redirect('/customers');
};

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const { DataTypes } = require('sequelize');
const sequelize = require('../config/database');
const Customer = sequelize.define('Customer', {
firstName: {
type: DataTypes.STRING,
allowNull: false
},
lastName: {
type: DataTypes.STRING,
allowNull: false
},
address: {
type: DataTypes.STRING,
allowNull: false
},
postalCode: {
type: DataTypes.STRING,
allowNull: false
},
city: {
type: DataTypes.STRING,
allowNull: false
},
phone: {
type: DataTypes.STRING,
allowNull: false
},
nip: {
type: DataTypes.STRING,
allowNull: false
}
});
// Synchronizacja modelu z bazą
Customer.sync();
module.exports = Customer;

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{
"name": "nodejs-express-orm-crud",
"version": "1.0.0",
"description": "Przykład aplikacji CRUD w NodeJS, framework Express i ORM",
"main": "index.js",
"scripts": {
"start": "node app.js",
"dev": "nodemon app.js",
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "https://git.klich.net.pl/skyer/Nodejs-express-orm-crud.git"
},
"keywords": [
"node"
],
"author": "Leszek Klich",
"license": "MIT",
"dependencies": {
"body-parser": "^2.2.0",
"ejs": "^3.1.10",
"express": "^5.1.0",
"express-ejs-layouts": "^2.5.1",
"method-override": "^3.0.0",
"sequelize": "^6.37.7",
"sqlite3": "^5.1.7"
},
"devDependencies": {
"nodemon": "^3.1.10"
}
}

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const express = require('express');
const router = express.Router();
const controller = require('../controllers/customerController');
router.get('/', controller.list);
router.get('/new', controller.createForm);
router.post('/', controller.create);
router.get('/:id', controller.show);
router.get('/:id/edit', controller.editForm);
router.put('/:id', controller.update);
router.delete('/:id', controller.delete);
module.exports = router;

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<form action="/customers" method="post">
<%- include('form', { customer: {} }) %>
<button class="btn btn-success">Zapisz</button>
</form>

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<form action="/customers/<%= customer.id %>?_method=PUT" method="post">
<%- include('form', { customer }) %>
<button class="btn btn-primary">Aktualizuj</button>
</form>

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<!-- views/przyklad.ejs -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title><%= title %></title>
</head>
<body>
<h1><%= title %></h1>
<p>Liczba: <%= liczba %></p>
</body>
</html>

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<div class="mb-3">
<label class="form-label">Imię</label>
<input type="text" name="firstName" class="form-control" value="<%= customer.firstName || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">Nazwisko</label>
<input type="text" name="lastName" class="form-control" value="<%= customer.lastName || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">Adres</label>
<input type="text" name="address" class="form-control" value="<%= customer.address || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">Kod pocztowy</label>
<input type="text" name="postalCode" class="form-control" value="<%= customer.postalCode || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">Miasto</label>
<input type="text" name="city" class="form-control" value="<%= customer.city || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">Telefon</label>
<input type="text" name="phone" class="form-control" value="<%= customer.phone || '' %>" required>
</div>
<div class="mb-3">
<label class="form-label">NIP</label>
<input type="text" name="nip" class="form-control" value="<%= customer.nip || '' %>" required>
</div>

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<a href="/customers/new" class="btn btn-primary mb-3">Dodaj klienta</a>
<table class="table table-striped">
<thead>
<tr>
<th>Imię</th>
<th>Nazwisko</th>
<th>Miasto</th>
<th>Telefon</th>
<th>Akcje</th>
</tr>
</thead>
<tbody>
<% customers.forEach(c => { %>
<tr>
<td><%= c.firstName %></td>
<td><%= c.lastName %></td>
<td><%= c.city %></td>
<td><%= c.phone %></td>
<td>
<a href="/customers/<%= c.id %>" class="btn btn-sm btn-info">Pokaż</a>
<a href="/customers/<%= c.id %>/edit" class="btn btn-sm btn-warning">Edytuj</a>
<form action="/customers/<%= c.id %>?_method=DELETE" method="post" style="display:inline">
<button class="btn btn-sm btn-danger" onclick="return confirm('Usunąć?')">Usuń</button>
</form>
</td>
</tr>
<% }) %>
</tbody>
</table>

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<!DOCTYPE html>
<html lang="pl">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Lista klientów</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>
<body class="p-3">
<div class="container">
<h1 class="mb-4">Lista klientów</h1>
<%- body %>
</div>
</body>
</html>

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<ul class="list-group">
<li class="list-group-item"><strong>Imię:</strong> <%= customer.firstName %></li>
<li class="list-group-item"><strong>Nazwisko:</strong> <%= customer.lastName %></li>
<li class="list-group-item"><strong>Adres:</strong> <%= customer.address %></li>
<li class="list-group-item"><strong>Kod pocztowy:</strong> <%= customer.postalCode %></li>
<li class="list-group-item"><strong>Miasto:</strong> <%= customer.city %></li>
<li class="list-group-item"><strong>Telefon:</strong> <%= customer.phone %></li>
<li class="list-group-item"><strong>NIP:</strong> <%= customer.nip %></li>
</ul>
<a href="/customers" class="btn btn-link mt-3">Powrót</a>

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Użytkownicy</title>
</head>
<body>
<h1>Lista użytkowników</h1>
<ul>
<% users.forEach(function(user) { %>
<li><%= user.id %>: <%= user.name %></li>
<% }) %>
</ul>
<% if (config.showEmails) { %>
<p>Adresy e-mail są widoczne</p>
<% } else { %>
<p>Adresy e-mail ukryte (strona <%= config.page %>)</p>
<% } %>
</body>
</html>