CODEWITHSUNDEEP
djangosessionincrement
Abdelhamed Abdin
Abdelhamed Abdin

Reputation: 594

How to increment inside session in Django?

I try to create a counter inside session but I fail. the session is print out the result I added once and it doesn't increment the process when I want to add a new comment again. the comment will be added but counter is still equal to one so, how can I do increment into session:

def post(self, request, user_slug, *args, **kwargs):
    my_question = UserAsking.objects.get(ask_slug=user_slug)
    userprof = UserProfile.objects.get(userasking__ask_slug=user_slug)
    comment_form = CommentForm(request.POST, instance=request.user)
    name = "%s %s" % (self.request.user.first_name, self.request.user.last_name)
    username = self.request.user.username
    logo = self.request.user.userprofile.logo.url
    if comment_form.is_valid():
        comment_request = self.request.POST.get('comment', None)
        comment_form = Comment.objects.create(comment=comment_request,
                                              userasking_id=my_question.id,
                                              userprofile_id=userprof.id,
                                              name=name,
                                              username=username,
                                              logo=logo,
                                              comment_slug=my_question.ask_slug
                                              )
        q = UserAsking.objects.get(ask_slug=my_question.ask_slug)
        c = comment_form
        u = comment_form.userprofile
        if 'notify_counts' in request.session:
            counter = request.session.get('notify_counts', 0)
            request.session['notify_counts'] = counter + 1
            request.session.save()
            print('%s is commented your post: %s and comment is (%s) notify = %i'
                  %(u, q, c, counter))
        return redirect('community:question_view', user_slug)
        # return redirect('community:question_view', comment_form.userasking.ask_slug)
    return render(request, 'community/question_view.html', {'comment_form': comment_form})

Upvotes: 0

Views: 251

Answers (1)

minglyu
minglyu

Reputation: 3327

Django automatically saves to the session database when the session has been modified, so you won't bother to save it manually, take a look：when session are stored[Django-Doc].

def post(request，...):
   ...
   notify_counts = request.session.get('notify_counts')
   if notify_counts is None:
       request.session['notify_counts'] = 1
   else:
       request.session['notify_counts'] +=1

Also you could use try...except pattern as follows：

def post(request, ...):
    try:
        request.session['notify_counts'] +=1
    except KeyError:
        request.session['notify_counts'] = 1

Upvotes: 1

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