I'm guessing the issue is actually in your template if you are following
along that page. None of the code in your views would generate that error
from what I can see.
The error indicates that you are trying to reverse('polls:detail') and not
providing any arguments for the URL resolver (or are passing an
empty/missing variable). In the template, this would probably look
something like {% url 'polls:detail' %}. I would guess that you are
forgetting question.id after the view name, assuming you are using the same
variable names as the tutorial.
Check near the bottom of the stack trace on the page, I bet it has a {% url
%} tag highlighted as the culprit.
-James
On May 7, 2015 12:09 AM, "H M" <pressby...@gmail.com> wrote:
> I am on part 4 django tutorial. The tutorial is very good and I easily get
> on part 4 but....
>
> I get error: Reverse for 'detail' with arguments '('',)' and keyword
> arguments '{}' not found. 1 pattern(s) tried:
> [u'polls/(?P<question_id>\\d+)/$']
>
> Am I missing something?
>
> My code is following:
>
> urlpatterns = patterns('',
>> url(r'^$', views.index, name='index'),
>> url(r'^(?P<question_id>\d+)/$', views.detail, name='detail'),
>> url(r'^(?P<question_id>\d+)/results/$',views.results, name='results'),
>> url(r'^(?P<question_id>\d+)/vote/$', views.vote, name='vote'),
>>
>
>
> views.py:
>
> from django.shortcuts import get_object_or_404, render
>> from django.http import HttpResponseRedirect, HttpResponse
>> from django.template import RequestContext, loader
>> from polls.models import Question, Choice
>> from django.http import Http404
>> from django.core.urlresolvers import reverse
>>
>>
>> def index(request):
>> latest_question_list = Question.objects.order_by('-pub_date')[:5]
>> template = loader.get_template('polls/index.html')
>> context = RequestContext(request, {'latest_question_list' :
>> latest_question_list, })
>> return HttpResponse(template.render(context))
>>
>> def detail(request, question_id):
>> try:
>> question = Question.objects.get(pk = question_id)
>> except Question.DoesNotExist:
>> raise Http404("Question ne postoji")
>> return render(request, 'polls/detail.html', {'question': question})
>>
>> def results(request, question_id):
>> question = get_object_or_404(Question, pk = question_id)
>> return render(request, 'polls/results.html', {'guestion': question})
>>
>>
>> def vote(request, question_id):
>> p = get_object_or_404(Question, pk=question_id)
>> try:
>> selected_choice = p.choice_set.get(pk=request.POST['choice'])
>> except (KeyError, Choice.DoesNotExist):
>> return render(request, 'polls/detail.html', {
>> 'question': p,
>> 'error_message': "Nijesi izabrao pitanje.",
>> })
>> else:
>> selected_choice.votes += 1
>> selected_choice.save()
>> return HttpResponseRedirect(reverse('polls:results', args=(p.id
>> ,)))
>>
>
>
>
>
>
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