Organizing Database Code

As your application grows, database-related code should be separated from routes.

A common approach is to keep models in a dedicated folder.

Example structure:

• models/user.js: defines the schema and model;
• routes/users.js: handles API routes.

Model file:

// models/user.js
const mongoose = require('mongoose');

const userSchema = new mongoose.Schema({
  name: String,
  age: Number
});

module.exports = mongoose.model('User', userSchema);

Route file:

// routes/users.js
const express = require('express');
const router = express.Router();
const User = require('../models/user');

router.get('/', async (req, res) => {
  const users = await User.find();
  res.json(users);
});

module.exports = router;

This separation keeps your code cleaner and easier to maintain.