express-crud-core

Express.js CRUD utility with MongoDB, authentication, cookies, sessions, and Pug templates.

Extracted from college curriculum covering Express.js, MongoDB, Authentication, and Template Engines.

Installation

npm install express-crud-core

Quick Start

1. Basic Express Server

const express = require('express');
const app = express();
const port = 3000;

app.get('/', (req, res) => res.send('Home Page'));
app.get('/about', (req, res) => res.send('About Page'));

app.listen(port, () => console.log(`Server on http://localhost:${port}`));

2. CRUD with MongoDB

const express = require('express');
const mongoose = require('mongoose');
const { createCrudRouter } = require('express-crud-core');

const app = express();
const Student = mongoose.model('Student', new mongoose.Schema({
  name: String, course: String, age: Number
}));

mongoose.connect('mongodb://127.0.0.1:27017/mydb');
app.use('/students', createCrudRouter(Student));
app.listen(3000);

3. Authentication (Cookies + Sessions)

const express = require('express');
const { setupSession, authMiddleware } = require('express-crud-core');

const app = express();
setupSession(app);
app.use(express.urlencoded({ extended: true }));

app.post('/login', (req, res) => {
  if (req.body.username === 'admin' && req.body.password === '123') {
    req.session.user = req.body.username;
    res.send('Login Successful');
  } else {
    res.send('Invalid Credentials');
  }
});

app.get('/dashboard', authMiddleware, (req, res) => {
  res.send(`Welcome ${req.session.user}`);
});

app.listen(3000);

API

createCrudRouter(model, options)

Generates full CRUD routes for a Mongoose model:

• GET / - List all (supports ?category=X filtering)
• GET /:id - Get by ID
• POST / - Create one or many (array)
• PUT /:id - Update by ID
• DELETE /:id - Delete by ID

authMiddleware

Protects routes behind session-based authentication.

setupSession(app, secret)

Configures express-session middleware.

setupCookies(app)

Configures cookie-parser middleware.

connectDB(uri)

Connects to MongoDB using Mongoose.

Examples

npm run example:basic   # Basic routing server on :3000
npm run example:crud    # In-memory CRUD + cookies on :3001
npm run example:mongo   # MongoDB CRUD on :3002
npm run example:auth    # Auth with sessions on :3003

Topics Covered

• Express.js routing (GET, POST, PUT, DELETE)
• Route parameters
• Static files
• CRUD operations (in-memory & MongoDB)
• MongoDB/Mongoose integration
• Cookie management (set, get, delete)
• Session management
• Authentication flow
• Pug template engine
• Conditional rendering in Pug

License

MIT