Why is My Django CSRF Check Failing with AJAX POST Requests?

Django CSRF Check Failing with Ajax POST Request

Background:
Django employs a Cross-Site Request Forgery (CSRF) protection mechanism to prevent malicious websites from submitting forms or triggering actions on a user's behalf. However, this can lead to issues when making AJAX POST requests.

Solution:

The AJAX POST request must include the CSRF token in its data body to pass Django's CSRF check. Using the $.ajax function, this can be achieved by simply adding the csrfmiddlewaretoken key-value pair to the data object:

$.ajax({
    data: {
        somedata: 'somedata',
        moredata: 'moredata',
        csrfmiddlewaretoken: '{{ csrf_token }}'
    },

The Django template language supports a special variable, {{ csrf_token }}, which retrieves and inserts the CSRF token into the JavaScript code. This token is used to verify that the request originates from the expected source and prevents CSRF attacks.

By incorporating the csrfmiddlewaretoken into the data body of the AJAX POST request, you ensure that Django recognizes and accepts the request, allowing it to process the data and perform the desired action.

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