Django: AttributeError at /course/u/update-item/ 'WSGIRequest' object has no attribute 'data' using django

I get this error when i try accessing localhost:8000/course/u/update-item/: "AttributeError at /update_item/ 'WSGIRequest' object has no attribute 'data'"

NOTE: When i change request.data to request.body i get another error message that says JSONDecodeError at /course/u/update-item/ Expecting value: line 1 column 1 (char 0)

views.py

def update_item(request):
    data = json.loads(request.data)
    productId = data['productId']
    action = data['action']
    print("Action:", action)
    print("ProductId:", productId)
    return JsonResponse("Item was added", safe=False)

cart.js

function updateUserOrder(productId, action){
    console.log('User is authenticated, sending data...')

        var url = '/u/update-item/'

        fetch(url, {
            method:'POST',
            headers:{
                'Content-Type':'application/json',
                'X-CSRFToken':csrftoken,
            }, 
            body:JSON.stringify({'productId':productId, 'action':action})
        })
        .then((response) => {
           return response.json();
        })
        .then((data) => {
            location.reload()
        });
}

urls.py

    path('u/update-item/', views.update_item, name="update-item"),

WSGIRequest object has no attribute 'data', In your case You have to change data attribute to POST.

data attribute is used in django rest framework. check out this