Getting Resources by ID
Explore how to build a REST API endpoint in NestJS that retrieves books by their unique ID. Understand how to handle route parameters, implement service logic to find books, and manage cases where books do not exist.
We'll cover the following...
The ability to retrieve individual books by their unique identifier adds a crucial layer of specificity to our virtual library. This section will implement this functionality in our books-api, allowing users to pinpoint the book they seek using its unique identifier within our virtual library.
Updating BooksController
Our application will have a route to fetch a book by its unique identifier. Following the RESTful and HTTP standards, we’ll create the endpoint /books/:id using the GET HTTP method. This method helps retrieve data without modifying it, making it the perfect choice for our needs.
Let’s create our route by following these ...