Destructuring nested data in React Query with Next.js

---

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---

Understanding the Problem

Let’s say you're using the useQuery hook from React Query to fetch some product data from an API endpoint. The basic implementation looks something like this:

[[See Video to Reveal this Text or Code Snippet]]

Solution: How to Destructure Nested Data

You can effectively destructure nested data directly from the API response. Here’s a step-by-step guide to do so properly, focusing on a better data fetching method.

Step 1: Fetch Data Using a Separate Function

Instead of directly using the API call inside useQuery, create a function that handles the data fetching. This approach provides better error handling and allows for nested destructuring.
Here's an example:

[[See Video to Reveal this Text or Code Snippet]]

This function checks if cart_data exists and whether it has any items. If items are found, it returns them; otherwise, it returns an empty array.

Step 2: Use useQuery to Fetch Data

Once you have your fetching function, integrate it within the useQuery like this:

[[See Video to Reveal this Text or Code Snippet]]

In this instance, cartData will contain the items retrieved from the API, which would allow you to work with it directly.

Step 3: Accessing Nested Data

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Final Thoughts

Understanding how to manipulate nested data can significantly streamline your React application’s data management. With these techniques, you can ensure your components render the necessary data without unnecessary complications.

Remember, each time you work with data from APIs, think about how you can best structure your data-fetching methods and how you will access the nested properties you need!