Building a Back-End Application with NestJS/

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Generating Controllers, Services, and Module From the CLI

Generating Controllers, Services, and Module From the CLI

Learn how to use the NestJS CLI to generate boilerplate code.

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Now that we have a fundamental understanding of the NestJS CLI, we’ll explore how to use it to generate key building blocks of a NestJS application, including modules, controllers, and services. We’ll see how these commands create files quickly, helping us avoid the often tedious process of manual file creation.

Generating a module

Suppose we build a user management system that handles user registrations, logins, and other user-related operations. We’ll need to create a dedicated module to encapsulate all these functionalities, a controller to handle HTTP requests, and a service for business logic. Let’s start with a module.

For example, to generate the users module from NestJS CLI, run the following command:

nest g mo users

This command will generate a new users.module.ts file within the src/users folder.

src/
├── app.controller.ts
├── app.module.ts
├── app.service.ts
└── users/
    └── users.module.ts

Generating controllers

To generate the users controllers, run the following command:

nest g controller users
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