Clean up using Controllers

In this tutorial, the instructor demonstrates how to refactor a Node.js backend by creating controllers to handle functionality, thus simplifying the routes. The process involves setting up a new folder for controllers, creating functions for getting products, and exporting these functions. The instructor also shows how to slim down the routes by importing the controller methods and testing the setup using Postman. The tutorial concludes with a cleaner and more organized code structure, setting the stage for future work on user authentication and registration.

Why is it beneficial to separate functionality into controllers in a Node.js application?

• It allows for easier integration with databases.

• It increases the execution speed of the application.

• It reduces the need for middleware.

• It makes the code more organized and maintainable.

What is the purpose of the 'getProducts' function in the product controller?

• To delete a product from the database.

• To update product details.

• To retrieve a list of products from the database.

• To handle user authentication.

How do you export functions from a controller file in Node.js?

• Using the 'require' keyword.

• By listing them in the 'exports' object.

• By declaring them as global variables.

• By using the 'import' statement.

What is the main change made to the product routes file after creating the controller?

• The routes file is now responsible for rendering views.

• The routes file is no longer needed.

• The routes file now points to controller methods instead of containing logic.

• The routes file now directly handles all database operations.

What is the advantage of using 'router.route' over 'router.get'?

• It allows chaining of multiple HTTP methods for a single route.

• It automatically handles errors.

• It simplifies the syntax for defining routes.

• It improves the performance of the server.

What tool is used to test the API endpoints in this tutorial?

• cURL

• Insomnia

• Postman

• Swagger

What is the expected outcome when testing the 'get product by ID' endpoint?

• A list of all products is returned.

• The server crashes.

• An error message is displayed.

• A single product is returned based on the provided ID.