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Building a Back-End Application with NestJS

Gain insights into building scalable backend applications with NestJS. Explore modules, REST API, TypeORM, JWT authentication, and automated testing to advance your backend development skills.

Beginner

60 Lessons

11h

Certificate of Completion

Gain insights into building scalable backend applications with NestJS. Explore modules, REST API, TypeORM, JWT authentication, and automated testing to advance your backend development skills.

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This course includes

94 Playgrounds

10 Quizzes

Course Overview

What You'll Learn

Course Content

Recommendations

Course Overview

In this course, you will cover NestJS, a framework used to build efficient and reliable server-side applications. Using this framework, developers can make highly scalable backend applications that can be consumed with any type of frontend. You will start the course by learning the foundational blocks of NestJS, such as understanding modules, services, and controllers. Next, you will learn how to build REST API, validation and error handling. You will also learn database integration using TypeORM, app con...Show More

In this course, you will cover NestJS, a framework used to build efficient and reliable server-side applications. Using this fra...Show More

What You'll Learn

An understanding of the core components of NestJS, including modules, controllers, services, pipes, and guards

Working knowledge of building fully functional REST APIs using NestJS

Hands-on experience implementing JWT-based authentication with NestJS

The ability to secure sensitive data using environment variables in NestJS

Hands-on experience in writing unit and end-to-end tests using Jest

Familiarity with implementing logging in NestJS for application monitoring

An understanding of the core components of NestJS, including modules, controllers, services, pipes, and guards

Course Content

Introduction

2 Lessons

Get familiar with NestJS to build scalable web apps, REST APIs, and database integration.

Overview

Introduction to the Course

Getting Started

7 Lessons

Look at NestJS's architecture, dependencies, modules, services, and controllers to build scalable web apps.

What Is NestJS?

Start Building a NestJS Application

The Default Dependencies

Understanding Modules

Services in NestJS

Controllers in NestJS

Quiz on NestJS Building Blocks

NestJS CLI

5 Lessons

Explore building and managing NestJS applications using the NestJS CLI tools and commands.

Installing the NestJS CLI

Creating a NestJS Application

Start a NestJS Application

Generating Controllers, Services, and Module From the CLI

Quiz on NestJS CLI

Building a REST API

11 Lessons

Break down the steps to create, manage, and search books in a REST API.

API Design

Generating Modules, Controllers, and Services

Entity Definition

Getting a List of Resources

Creating DTOs

Creating Resources

Getting Resources by ID

Updating Resources by ID

Deleting Resources by ID

Adding Search Functionality

Quiz on RESTful API Development with NestJS

Validation and Error Handling

4 Lessons

Dig into the process of validating and handling errors in a NestJS application.

Overview of Pipes in NestJS

Custom Pipe

Adding Validation Rules to the DTO Class

Quiz on NestJS Data Validation and Security Fundamentals

Working with Databases

5 Lessons

Follow the process of connecting databases, implementing CRUD, crafting advanced queries, and managing relationships.

Connecting to PostgreSQL using TypeORM

Implementing CRUD Operations with the TypeORM Repository

Advanced Queries with TypeORM QueryBuilder

Introduction to Relationships in TypeORM

Quiz on TypeORM

App Configuration

3 Lessons

Master the steps to securely manage environment variables and validate configurations using NestJS.

Setting Up Environment Variables in a NestJS Application

Configuration Validation with Joi

Quiz on App Configuration

Authentication

7 Lessons

Step through setting up authentication, securing endpoints, user sign-up, and employing JWTs.

Setting Up the Auth Module, Controller, Service, and Repository

Implementing Sign-Up

Implementing Sign-In

Using JSON Web Tokens (JWTs) for User Authorization

Adding Route Protections with Guards

Getting the Current User with a Custom Decorator

Quiz on Authentication

Authorization

4 Lessons

Unpack the core of defining and implementing role-based authorization controls in NestJS applications.

Defining User Roles

Understanding Role Retrieval in Guards

Implementing Role-Based Authorization

Quiz on Authorization

10.

Testing

9 Lessons

Work your way through testing authentication services, unit tests, and E2E scenarios for robust NestJS applications.

Testing Authentication Services

Unit Testing for the signUp Method of AuthService

Unit Testing for the Unregistered Email Scenario During Sign-In

Unit Testing for the Invalid Password Scenario During Sign-In

Unit Testing for the Valid Credentials Scenario During Sign-In

Setting Up End-to-End Testing for Authentication

E2E Tests for a Sign-Up Scenario

E2E Tests for a Sign-In Scenario

Quiz on Testing in NestJS

11.

Logging

2 Lessons

Grasp the fundamentals of effective logging for monitoring and troubleshooting back-end applications.

Introduction to Logging

Quiz

12.

Wrapping Up

1 Lessons

Solve problems in building NestJS back-end applications, covering key concepts and advanced skills.

Conclusion

Course Author

Boussari Latif

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