Mongoose ODM setup in Express - Mini Project: Build & Apply

Mongoose ODM setup

📖 Scenario: You are building a simple Express app that needs to store user data in a MongoDB database. To do this, you will set up Mongoose, a tool that helps you work with MongoDB in a friendly way.

🎯 Goal: Set up Mongoose in your Express app by creating a connection to MongoDB, defining a user schema, and creating a model to interact with the users collection.

📋 What You'll Learn

Create a Mongoose connection to a local MongoDB database named userdb

Define a Mongoose schema called userSchema with fields name (string) and email (string)

Create a Mongoose model called User using the userSchema

Export the User model for use in other parts of the app

💡 Why This Matters

🌍 Real World

Mongoose is widely used in Node.js apps to simplify working with MongoDB databases by providing a clear structure and easy methods to create, read, update, and delete data.

💼 Career

Knowing how to set up Mongoose is essential for backend developers working with Node.js and MongoDB, a common stack in web development jobs.

1

Connect to MongoDB with Mongoose

Write code to import mongoose and connect to a MongoDB database at mongodb://localhost:27017/userdb using mongoose.connect.

Express

# Your code here to import mongoose and connect to MongoDB

Need a hint?

Use require('mongoose') to import Mongoose. Then call mongoose.connect with the MongoDB URL.

2

Define a user schema

Create a constant called userSchema and assign it a new mongoose.Schema with fields name and email, both of type String.

Express

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/userdb');

// Define userSchema with name and email fields

Need a hint?

Use new mongoose.Schema({ name: String, email: String }) to define the schema.

3

Create the User model

Create a constant called User and assign it the result of mongoose.model with the name 'User' and the userSchema.

Express

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/userdb');

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

// Create User model here

Need a hint?

Use mongoose.model('User', userSchema) to create the model.

4

Export the User model

Add a line to export the User model using module.exports = User.

Express

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/userdb');

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

const User = mongoose.model('User', userSchema);

// Export User model

Need a hint?

Use module.exports = User to export the model.