Django Tutorials: NoReverseMatch at /polls/1/vote/

[wasingej]

I am trying to create the project described by the Django Tutorials.  However, I have reached a problem that I am stuck on after implementing the voting forms described in tutorial 4 (https://docs.djangoproject.com/en/1.6/intro/tutorial04/).  When I run my website and go to the url:http://localhost:8000/polls/1/vote/, I am greeted with an exception:

NoReverseMatch at /polls/1/vote/

value: u'polls' is not a registered namespace

here is templates/polls/detail.html:

<h1>{{ poll.question }}</h1>

{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}

<form action="{% url 'polls:vote' poll.id %}" method="post"> <<Exception occurs on this line

{% csrf_token %}

{% for choice in poll.choice_set.all %}

    <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />

    <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />

{% endfor %}

<input type="submit" value="Vote" />

</form>

This template is rendered from this view in polls/views.py:

def vote(request, poll_id):

    p = get_object_or_404(Poll, pk=poll_id)

    try:

        selected_choice = p.choice_set.get(pk=request.POST['choice'])

    except (KeyError, Choice.DoesNotExist):

        # Redisplay the poll voting form.

        return render(request, 'polls/detail.html', {

            'poll': p,

            'error_message': "You didn't select a choice.",

        })

    else:

        selected_choice.votes += 1

        selected_choice.save()

        # Always return an HttpResponseRedirect after successfully dealing

        # with POST data. This prevents data from being posted twice if a

        # user hits the Back button.

        return HttpResponseRedirect(reverse('polls:results', args=(p.id,)))

It seems strange that 'polls' is not a registered namespace because it is the name of my django application.  Any ideas as to what I could be doing wrong here?

[Daniel Roseman]

On Thursday, 20 March 2014 23:07:47 UTC, wasingej wrote:

I am trying to create the project described by the Django Tutorials.  However, I have reached a problem that I am stuck on after implementing the voting forms described in tutorial 4 (https://docs.djangoproject.com/en/1.6/intro/tutorial04/).  When I run my website and go to the url:http://localhost:8000/polls/1/vote/, I am greeted with an exception:

NoReverseMatch at /polls/1/vote/

value: u'polls' is not a registered namespace

<snip>

It seems strange that 'polls' is not a registered namespace because it is the name of my django application.  Any ideas as to what I could be doing wrong here?

Are you sure you've followed the instructions at the end of the previous part?

https://docs.djangoproject.com/en/1.6/intro/tutorial03/#namespacing-url-names

--

DR. 

[odoote...@gmail.com]

please let me know the particular solution for version 2.1 i m stucked

[Suresh Kannan]

You should read the links

https://docs.djangoproject.com/en/2.1/intro/tutorial03/#namespacing-url-names 

https://stackoverflow.com/questions/14892462/django-error-upolls-is-not-a-registered-namespace

https://stackoverflow.com/questions/30935053/noreversematch-at-polls-1-vote

Suresh

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[Victor H. Velasquez Rizo]

Daniel

Share your urls.py file....

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Atte...,.
Vìctor Hugo Velàsquez Rizo
Cali - Colombia