Скачать или смотреть Resolving 403 Forbidden (CSRF token missing or incorrect) Error in Django REST Framework

Learn how to fix the `403 Forbidden (CSRF token missing or incorrect)` error in Django REST Framework through a simple solution involving CSRF tokens in JavaScript.
---
This video is based on the question https://stackoverflow.com/q/71387751/ asked by the user 'Darya Lebedeva' ( https://stackoverflow.com/u/11745709/ ) and on the answer https://stackoverflow.com/a/71397144/ provided by the user 'nzabakira floris' ( https://stackoverflow.com/u/15075210/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Error :Forbidden (CSRF token missing or incorrect.) while using django rest framework

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Troubleshooting the 403 Forbidden Error in Django REST Framework

When building web applications with Django REST Framework, developers often encounter various errors, particularly when dealing with form submissions. One common issue is receiving a 403 Forbidden (CSRF token missing or incorrect) error when attempting to make a POST request. This can be puzzling, especially when you think you have everything set up correctly. Let's break down the problem and explore a concise solution that will help you move forward with your project.

Understanding the Problem

CSRF, or Cross-Site Request Forgery, is a security feature implemented in Django to prevent unauthorized actions being taken in your web application. When you try to submit a form using AJAX (like in your case with vanilla JavaScript and XMLHttpRequest), Django expects a valid CSRF token to be included with the request. If this token is missing or incorrect, Django will return a 403 Forbidden error, effectively blocking your action.

Example Scenario

You have a form that looks something like this:

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

And you are trying to send the form data using JavaScript, which leads to the frustrating 403 Forbidden error.

The Solution

Step 1: Updating Your JavaScript Code

To successfully send a CSRF token with your AJAX request, you'll need to extract it from the cookies and set it as a request header. This requires adding a small function to your existing JavaScript code.

1. Create a Function to Retrieve the CSRF Token

Add the following function at the top of your script to retrieve the CSRF token from your browser’s cookies:

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

Step 2: Add the CSRF Token to Your Request Header

Now that you have the CSRF token, it needs to be added to your AJAX request headers. Modify the part of your JavaScript code where you set the request headers as follows:

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

Complete Example of JavaScript with CSRF Token

Here is what the complete JavaScript function might look like after the modifications:

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

Conclusion

Dealing with CSRF tokens can be tricky, especially when moving between forms and JavaScript-heavy applications. By retrieving the CSRF token from the cookies and setting it in your AJAX request headers, you ensure a smooth and secure communication with your backend. This small adjustment will save you from the annoying 403 Forbidden error, allowing you to fully harness the power of Django REST Framework.

By implementing these changes, you're not only solving the immediate issue but also enhancing the security and robustness of your application. Happy coding!