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Discover how to efficiently make a `POST` request with Axios in React, even when you're working with an array of objects.
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How to Make a POST Request from an Array of Objects with Axios

When working with APIs in React, you might encounter a situation where your endpoint only accepts a single object at a time. This can be a bit tricky when you have an array of objects that you want to send in a single go. In this post, we'll explore a clear and effective way to make a POST request using Axios, allowing us to send each object in the array to the server individually.

The Problem

Imagine you have an array of objects, each containing data that you want to send to an API. For example:

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You need to send each object in this array to your endpoint "www.url.com", but the endpoint only accepts a single object in each POST request. So, how do you achieve this smoothly?

The Solution

To handle this situation effectively, you can loop through your array and make a separate API call for each object. Here's how you do it:

Basic Loop with Axios

Using a simple loop, you can iterate over the array and call Axios for each object one at a time:

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This approach will send each object individually to your endpoint as specified. However, if you want to manage the responses more systematically, consider using promises.

Using Promise.allSettled

If it’s important to know when all your requests are completed—regardless of whether they succeed or fail—you can use Promise.allSettled(). This will allow you to manage multiple requests concurrently and handle the results after they're done:

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Breaking It Down

Mapping over the Array:

The array.map() function creates an array of promises (one for each object). Each promise represents an Axios POST request.

Using Promise.allSettled():

This function waits until all the promises are settled, meaning either fulfilled (successful) or rejected (failed).

Handling Results:

You can then iterate over the results, checking the status of each promise to log success or any errors that occurred.

Conclusion

Making a POST request from an array of objects using Axios is straightforward when you break it down into manageable steps. By iterating over the array and sending each object individually—or managing them with promises—you can efficiently communicate with your API. This way, you can ensure that all relevant data is sent while still complying with the API's restrictions.

If you run into any challenges while implementing this, feel free to reach out in the comments below!