View doesn't return HttpResponse

Question

The view iot.views.post_new didn't return an HttpResponse object. It returned None instead. Hope everybody help please.

This is my views.py file:

def post_new(request):
    if request.method == "POST":
        form = PostForm(request.POST or None)
        if form.is_valid():
            ct = form.save(commit=False)
            ct.author = request.user
            ct.upload_time = request.upload_time
            ct.save()
            return redirect('iot:detail', pk=ct.pk)
    else:
        form = PostForm()
        return render(request, 'iot/post.html', {"form":form})

Could you ask in English, please, rather than (I'm guessing) Vietnamese? — Dragonthoughts, May 20 '18 at 20:25
Possible duplicate of [didn't return an HttpResponse object](https://stackoverflow.com/questions/12505250/didnt-return-an-httpresponse-object) — faintsignal, May 20 '18 at 20:34
I would also recommend you to avoid writing blog about things you have to ask about in SO. Especially if you 'want the fix' rather then knowledge and understanding. — Alexandr Tatarinov, May 20 '18 at 22:13

score 1 · Answer 1 · answered May 20 '18 at 20:31

1

Remove the else

def post_new(request):
    if request.method == "POST":
        form = PostForm(request.POST or None)
        if form.is_valid():
            ct = form.save(commit=False)
            ct.author = request.user
            ct.upload_time = request.upload_time
            ct.save()
            return redirect('iot:detail', pk=ct.pk)

    form = PostForm()
    return render(request, 'iot/post.html', {"form":form})

answered May 20 '18 at 20:31

HenryM

5,557
7
49
105

unsuccessful . Data is not saved to the database – user9820121 May 20 '18 at 20:35
I'm doing my blog post, can you help me? – user9820121 May 20 '18 at 20:36
The only reason it isn't getting saved is there is an error in the form. Ensure you're showing your errors on the html page so you can see what isn't working – HenryM May 21 '18 at 09:20

score 0 · Answer 2 · answered May 20 '18 at 20:29

0

If the form isn't valid in your if clause and you POST a response, it won't return render. That's what the error message is complaining about.

answered May 20 '18 at 20:29

Benjamin Hicks

756
3
7

yes. I know . But I want to get the fix. I'm doing a blog post for my blog – user9820121 May 20 '18 at 20:32

score 0 · Answer 3 · answered May 27 '20 at 13:33

 The view store.views.updateItem didn't return an HttpResponse object. It returned None instead.


def updateItem(request):
    data = json.loads(request.body)
    productId = data['productId']
    action = data['action']

    print('Action:', action)
    print('Product:', productId)

    customer = request.user.customer
    product = Product.objects.get(id=productId)
    order, created = Order.objects.get_or_create(customer=customer, complete=False)

    orderItem, created = OrderItem.objects.get_or_create(order=order, product=product)

    if action == 'add':
        orderItem.quantity = (orderItem.quantity + 1)
    elif action == 'remove':
        orderItem.quantity = (orderItem.quantity - 1)

    orderItem.save()

    if orderItem.quantity <= 0:
        orderItem.delete()

Please add an explanation to this answer – Daniel Holmes May 27 '20 at 13:39 — Daniel Holmes, May 27 '20 at 13:39

View doesn't return HttpResponse

3 Answers3