Building Core Features with Modules and DTOs

Back-end Engineering

You'll create a dedicated module for managing books, complete with endpoints for creating, reading, updating, and deleting records. You'll learn to validate incoming data using DTOs and handle dynamic route parameters to interact with specific resources.

NestJS

TypeScript

See path

3 lessons

12 practices

1 hour

Server-Side Programming

Course details

Creating New Resources with DTOs and Validation

Preview

Observing SPA Integration and Creating Resources with DTOs

Defining DTOs for Creating Users and Books

Implementing Controllers for Users and Books

Implementing the Service Layer for Users and Books

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

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