How to Use axios Response Data in Another Request in React

Описание: Discover how to properly use `axios` response data in subsequent requests in React, avoiding common pitfalls and ensuring data integrity in your application.
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This video is based on the question https://stackoverflow.com/q/64042481/ asked by the user 'user10000' ( https://stackoverflow.com/u/14157438/ ) and on the answer https://stackoverflow.com/a/64042828/ provided by the user 'Mario Petrovic' ( https://stackoverflow.com/u/3955557/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Using axios Response Data in Another Request in React

When working with Axios in a React application, you may encounter a scenario where the data fetched from one API call is required for another. This can become tricky, especially when you need to ensure that the data from the first response is available when making the second request. In this guide, we’ll explore a common problem and provide a clear, organized solution.

The Problem

Imagine you're building an application that requires information from two different API routes. The first call fetches necessary data, which must be used in the subsequent request. However, you find that the data you need from the first request is frequently undefined or an empty object when you're trying to utilize it in the second request.

Here’s a snippet of the situation:

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

In this code, firstData is already set to an empty object when you try to use it in your second Axios request.

The Solution

To resolve this issue, you need to ensure that the data you want to pass to your second request is actually available at the time of that request. A good approach is to return the value from the first .then() block and use it in the second .then() block. Here's how to modify your original code:

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

Breakdown of the Solution

Return the Data: In the first .then() where you have the Axios request, directly return response.data. This allows you to access the fetched data in the next .then().

Using Async/Await: While this example primarily uses .then(), you can also convert this to use async/await syntax for better readability.

Setting State After Data Fetch: It's crucial to understand that React's state setting via setFirstData is asynchronous. Therefore, if you try to access the firstData immediately after calling setFirstData, it won't return the updated state right away. Instead, use the returned data from the promise chain.

Conclusion

Ensuring the proper handling of response data between multiple Axios requests can enhance the functionality of your React application. By returning values correctly and understanding the asynchronous nature of state updates, you can streamline your API interactions.

Now that you have a clearer understanding of how to utilize Axios response data across multiple requests, you can tackle more complex integrations with ease.

Happy coding!