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

Using Django Templates & Frontend
1

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"),

traceback

Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).
April 13, 2022 - 11:24:22
Django version 3.1, using settings 'dnextedprj.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
Internal Server Error: /course/u/update-item/
Traceback (most recent call last):
  File "C:\Users\Destiny\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\Destiny\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Destiny\Desktop\Circus\dnextedprj\course\views.py", line 90, in update_item
    data = json.loads(request.data)
AttributeError: 'WSGIRequest' object has no attribute 'data'
[13/Apr/2022 11:24:26] "GET /course/u/update-item/ HTTP/1.1" 500 63699
2

The attribute is request.body, not request.data. If you’re getting the error using it, that’s a different issue.

3

when i use request.body is shows this error JSONDecodeError at /course/u/update-item/ Expecting value: line 1 column 1 (char 0)

4

Check the network tab in your browser’s developer tools to verify that your javascript is sending what you think is being sent. (Or put a print statement in your view to print the body before trying to decode it.)

5

i just checked and i’m getting a 500 internal server error, it think my javascript updateUserOrder function doesn’t send data to django, is there a way i can fix this?

7

This just jumped out at me from the log.

For some reason you’re trying to GET from that url instead of POSTing to it.
Something in your system is issuing a GET.

(also, the url in your code is referencing ‘/u/update-item/’ and not ‘/course/u/update-item/’)

It appears to me that the error is somewhere other than this block of JavaScript.

1 Like
8

Yes, i was supposed to post to the url but i was GETting instead, thanks i fixed it

1 Like
9

where exacty do you make the changes from Get to POST

10

Hello where do i make the changes from a GET request to a POST request

11

That depends upon where and how you’re doing the GET.

1 Like
12

show exactly where you made the change