Modern Full-Stack Development with Nest js, React, TypeScript, and MongoDB: Part 1

Now that the auth microservice is up and running, let’s add a payments microservice to process payments for the user accounts and complete the whole architecture. Similar to the Create component, you imported the appropriate modules from React, React Router, and the created Auth0Context. To retrieve the contents of the post that needs to be edited, you obtained the postId from the URL using the useParams() React hook. With that in place, it was easy to then fetch the details of such post from the database. The handleFormSubmission() method will receive and process the values from the input fields before posting the information to the server. Remember that the backend API is already protected as configured in the first part of this series.

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From the preceding code snippet, you have marked each of the individual properties in the CreatePostDTO class to have a data type of string and as read-only to avoid unnecessary mutation. Here, you will start by installing and configuring Nest.js and then proceed to flesh out the structure necessary for the API. Learn how to build modern and secure Full-Stack applications with React, TypeScript, and Nest.js.

Installing and configuring Nest.js

Any random user can easily make an API call to retrieve or create a new post without authentication and succeed. This is not acceptable as the applications need to be smart enough to manage the identity of users. Similarly to the BlogController, each of the asynchronous methods you have defined here has a metadata decorator and takes in a prefix that Nest.js uses as a routing mechanism. It controls which controller receives which requests and points to the methods that should process the request and return a response, respectively. All the methods created above will help facilitate proper interaction with the MongoDB database from the backend API.

Basic knowledge and previous experience with building web applications with React will help you to get the best out of this series. Although not mandatory, you should know a few things about TypeScript. And to make it easy for everyone to follow along, I will endeavor to break down any complex implementation. Furthermore, you will also need to ensure that you have Node.js and Yarn package manager installed in your development machine. If you are yet to get them installed, kindly follow the instructions here to learn how to install Node.js properly and here for Yarn package manager.

CRUD application with NestJS and MongoDB using Mongoose

You will learn Nest.js from scratch to an advanced level using TypeScript. LogRocket is like a DVR for web and mobile apps, recording literally everything that happens while a user interacts with your app. Instead of guessing why problems happen, you can aggregate and report on problematic network requests to quickly understand the root cause. Some examples of what to build with NestJS include enterprise-level web applications and ecommerce applications. Express does not require a specific structure, which can provide flexibility for small or one-person development teams. However, this can become a problem as team size or app complexity grows, especially with developers working on different aspects of the app.

nestjs typescript

For simplicity, you’ll store data in-memory and not in an external database. It can grow thanks to the sponsors and support by the amazing backers. For your reference, you can find the complete code from this guide on GitHub.

d) Give a chance to Test Driven Development (TDD)

You will update this BlogModule with the required contents later in the tutorial. Here you have successfully defined the types of data for a Post type as string values. This will, in a nutshell, make you more productive as a developer and make your code easier to read and understand.

The code above implements a simple CRUD (Create, Retrieve, Update, and Delete) operation using simple JavaScript array manipulations since we are not working with a real database. We have the create method which implements the Post method for creating a new Todo. To create our first project using Nest.js, we will follow the conventional way from the official documentation.

An overview of some of the principles associated with a clean frontend architecture (SOLID, KISS, DRY, and more).

First, NestJS follows and improves upon the standards and structures used by the popular Front-end framework called Angular. So if you’re coming from Angular to NestJS, then you can likely get started with it in a day. With the documentation, it’s straightforward to get started, and almost all your development questions have already been covered in the documentation. The tool can create and manage any part of the NestJS framework by typing in your terminal commands. We can also easily construct ecommerce websites by combining NestJS with a frontend framework like React, Angular, or Vue.

Here you will generate a service, also known as a provider, and afterward, you will create a controller to handle all HTTP requests from the application. Services in Nest.js are meant only to handle any complex business logic for a specific purpose and return the appropriate response to the controller. You will start by using the command-line interface built specifically for scaffolding a new Nest.js application to create yours. Alternatively, you can clone the starter project for Nest.js here on GitHub. React is an open-source JavaScript frontend framework for building an intuitive and interactive user interface.

After implementing the methods, the student service file will look as below. NestJS and MongoDB are superior combinations to implement a scalable backend. In this blog, We will learn how to create a CRUD application with NestJS and MongoDB using Mongoose as an ORM. You then call the initializeAuth0() method once the component is mounted. This is the first part of this series, and from the second part, you will set up a user interface and create frontend logic using React and TypeScript.

  • Nest provides a level of abstraction above common Node.js frameworks and exposes their APIs to the developer.
  • Coming back to the api-gateway app, create the AuthService to publish an event to the auth microservice.
  • It supports arrays and nested objects values and allows for flexible and dynamic schemas.
  • When an HTTP request is received, the routing mechanism routes it to the correct controller within NestJS.
  • NestJS is heavily influenced by Angular, React, and Vue — while offering dependency injection right out of the box.

How you handle exceptions is really important, and conveniently, Nest sorts all of that out for you. For validations mentioned in the create-student.dto.ts file to work, we also need to register the validation pipe in the main.ts file. This code will check if the Access Token included in a request is valid.