How to Replicate a Python Multipart/form-data POST in Node.js with Axios

Learn how to translate Python's multipart/form-data POST requests to Node.js using Axios, detailed with code examples and solutions to common errors.
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This video is based on the question https://stackoverflow.com/q/65458355/ asked by the user 'aturc' ( https://stackoverflow.com/u/1483132/ ) and on the answer https://stackoverflow.com/a/65462513/ provided by the user 'aturc' ( https://stackoverflow.com/u/1483132/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Replicating a Python Multipart/form-data POST in Node.js with Axios

In the modern landscape of web development, translating requests between different programming languages can be a daunting task, especially when working with complex API calls that utilize multipart/form-data. This post will walk you through how to convert a Python implementation for publishing a workbook to a third-party API into Node.js with Axios.

Understanding the Problem

Recently, a developer faced a challenge in replicating a Python function that successfully publishes a workbook to an API. The Python code leverages the requests library to build a multipart/form-data POST request. Their aim was to achieve the same functionality using Node.js with the axios library.

Here's the Python code the developer was working with:

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

When translating this to Node.js, they faced challenges, particularly with the format of the request payload which led to a "Bad Request" error from the server.

Step-by-Step Solution

Let’s break down the Node.js implementation using Axios step-by-step.

1. Setup Your Libraries

Ensure that you have the necessary packages installed:

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

2. Create the Function

In Node.js, you would define your function like this:

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

3. Key Changes Made

XML Payload: Originally, the XML payload was being base64 encoded. However, the API expected the XML formatted as plain text.

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

4. Sending the Request

With the corrected implementation set, the form is properly constructed to send the API request. Ensure that you handle errors appropriately to debug issues efficiently.

5. Testing the Implementation

Now that the code is written, run your function with the appropriate parameters to test if the workbook publishes successfully.

Conclusion

Translating API calls from Python to Node.js can be tricky, especially with multipart/form-data requests. However, with careful handling of your multipart form data and understanding what the API expects, it can be accomplished successfully.

By following the steps outlined here, you can ensure that your Node.js implementation with Axios mirrors the functionality of your original Python code. Happy coding!

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