I am encountering an issue where the data retrieved from a Django POST request using Javascript fetch is successfully displayed, but I am receiving an error message stating "Expecting value: line 1 column 1 (char

I've been encountering an issue while attempting to transmit data using Javascript fetch. The error message I keep getting is: "json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)"

Within index.js:

fetch('save_user_post/', {
                        method: 'POST',
                        credentials: 'same-origin',
                        headers:{
                            'Accept': 'application/json',
                            'X-CSRFToken': user_post_form_csrf.value,
                    },
                        body: JSON.stringify({
                            'input_user_post_value': input_user_post.value,
                    }) 
                    })
                    .then(response => {
                        
                            return response.json()
                    })
                    .then(user_post_save_result => {

                        console.log(user_post_save_result )
                    
                    })

Then, in views.py:

def save_user_post(request):
    if request.method != "POST":
            return JsonResponse({"error": "no POST method"}, status=400)
    if request.user.is_authenticated:
        print(request.body) #I checked here for successful reception of data
        data_of_post = json.loads(request.body)
        input_user_post_value = data_of_post.get('input_user_post_value', '')
        print(f'input_user_post_value is {input_user_post_value}') #Here, I confirmed that the correct value was obtained
        post_save_result = {'post_saved_or_not': 'saved'}
        return JsonResponse(post_save_result)

Despite confirming valid fetch data with both print() commands, the error persists specifically within the line data_of_post = json.loads(request.body). Any suggestions on how to resolve this issue?

Answer №1

The problem seems to be with the final line because 'description_save_result' is not defined in the code

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