5. Introduction to Mongoose | MEAN Web Development

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MEAN Web Development

By : Amos Q. Haviv

4.5 (58)

MEAN Web Development

4.5 (58)

By: Amos Q. Haviv

Overview of this book

The MEAN stack is a collection of the most popular modern tools for web development; it comprises MongoDB, Express, AngularJS, and Node.js. Starting with MEAN core frameworks, this project-based guide will explain the key concepts of each framework, how to set them up properly, and how to use popular modules to connect it all together. By following the real-world examples shown in this tutorial, you will scaffold your MEAN application architecture, add an authentication layer, and develop an MVC structure to support your project development. Finally, you will walk through the different tools and frameworks that will help expedite your daily development cycles. Watch how your application development grows by learning from the only guide that is solely orientated towards building a full, end-to-end, real-time application using the MEAN stack!

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Introduction to MEAN

1. Introduction to MEAN

Three-tier web application development

The evolution of JavaScript

Introducing MEAN

Installing MongoDB

Installing Node.js

Introducing NPM

Summary

2. Getting Started with Node.js

2. Getting Started with Node.js

Introduction to Node.js

JavaScript closures

Node modules

Developing Node.js web applications

Summary

3. Building an Express Web Application

3. Building an Express Web Application

Introduction to Express

Installing Express

Creating your first Express application

The application, request, and response objects

External middleware

Implementing the MVC pattern

Configuring an Express application

Rendering views

Serving static files

Configuring sessions

Summary

4. Introduction to MongoDB

4. Introduction to MongoDB

Introduction to NoSQL

Introducing MongoDB

Key features of MongoDB

MongoDB shell

MongoDB databases

MongoDB collections

MongoDB CRUD operations

Summary

5. Introduction to Mongoose

5. Introduction to Mongoose

Introducing Mongoose

Understanding Mongoose schemas

Extending your Mongoose schema

Defining custom model methods

Model validation

Using Mongoose middleware

Using Mongoose DBRef

Summary

6. Managing User Authentication Using Passport

6. Managing User Authentication Using Passport

Introducing Passport

Understanding Passport strategies

Understanding Passport OAuth strategies

Summary

7. Introduction to AngularJS

7. Introduction to AngularJS

Introducing AngularJS

Key concepts of AngularJS

Installing AngularJS

Structuring an AngularJS application

Bootstrapping your AngularJS application

AngularJS MVC entities

AngularJS routing

AngularJS services

Managing AngularJS authentication

Summary

8. Creating a MEAN CRUD Module

8. Creating a MEAN CRUD Module

Introducing CRUD modules

Setting up the Express components

Introducing the ngResource module

Implementing the AngularJS MVC module

Finalizing your module implementation

Summary

9. Adding Real-time Functionality Using Socket.io

9. Adding Real-time Functionality Using Socket.io

Introducing WebSockets

Introducing Socket.io

Installing Socket.io

Building a Socket.io chat

Summary

10. Testing MEAN Applications

10. Testing MEAN Applications

Introducing JavaScript testing

Testing your Express application

Testing your AngularJS application

Summary

11. Automating and Debugging MEAN Applications

11. Automating and Debugging MEAN Applications

Introducing the Grunt task runner

Debugging Express with node-inspector

Debugging AngularJS with Batarang

Summary

Index

Index

Using Mongoose middleware

Mongoose middleware are functions that can intercept the process of the init, validate, save, and remove instance methods. Middleware are executed at the instance level and have two types: pre middleware and post middleware.

Using pre middleware

Pre middleware gets executed before the operation happens. For instance, a pre-save middleware will get executed before the saving of the document. This functionality makes pre middleware perfect for more complex validations and default values assignment.

A pre middleware is defined using the pre() method of the schema object, so validating your model using a pre middleware will look like the following code snippet:

UserSchema.pre('save', function(next) {
  if (...) {
    next()
  } else {
    next(new Error('An Error Occured'));
  }
});

Using post middleware

A post middleware gets executed after the operation happens. For instance, a post-save middleware will get executed after saving the document. This functionality makes post...

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