Stuck with Django Tutorial Part 4

[Nithin Kumar]

Hi,

Stuck with this problem 

https://docs.djangoproject.com/en/4.1/intro/tutorial04/

NoReverseMatch at /polls/2/Reverse for 'vote' with arguments '(2,)' not found. 1 pattern(s) tried: ['polls/<int:question_id/vote/\\Z']

My detail.html is like this and it is failing at Line 1. 

I checked all solutions online but no luck. 

<form action="{% url 'polls:vote' question.id %}" method="post">

    {% csrf_token %}

    <fieldset>

        <legend><h1>{{ question.question_text }}</h1></legend>

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

        {% for choice in question.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 %}

    </fieldset>

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

    </form>

[Muhammad Juwaini Abdul Rahman]

question_id=question.id

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[Prosper Lekia]

Let's see your views.

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[Nithin Kumar]

question.id or question_id both gave the same result.

These are the views.

from django.shortcuts import get_object_or_404, render

from django.http import HttpResponse, Http404, HttpResponseRedirect

from django.template import loader

from .models import Choice,Question

from django.urls import reverse

# Create your views here.

def index(request):

    latest_question_list = Question.objects.order_by('-pub_date')[:5]

    template = loader.get_template('polls/index.html')

    context = {

        'latest_question_list': latest_question_list,

    }

    return render(request, 'polls/index.html',context)

   

def detail(request, question_id):

    try:

        question = Question.objects.get(pk=question_id)

    except Question.DoesNotExist:

        raise Http404("Question Does not exist")

    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', {'question': question})

def vote(request, question_id):

    return HttpResponse("You're voting on question %s." % question_id)

   

[Sandip Bhattacharya]

Can you share your urls.py?

[Brian Carey]

I think you need to check your urls.py.

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[Prosper Lekia]

This should be your views for vote.

from django.http import HttpResponse, HttpResponseRedirect

from django.shortcuts import get_object_or_404, render

from django.urls import reverse

from .models import Choice, Question

# ...

def vote(request, question_id):

    question = get_object_or_404(Question, pk=question_id)

    try:

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

    except (KeyError, Choice.DoesNotExist):

        # Redisplay the question voting form.

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

            'question': question,

            '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=(question.id,)))

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[Nithin Kumar]

Here.

urls.py

from django.urls import path

from . import views

app_name = 'polls'

urlpatterns = [

    path('', views.IndexView.as_view(), name='index'),

    path('<int:pk>/', views.DetailView.as_view(), name='detail'),

    path('<int:pk>/results/', views.ResultsView.as_view(), name='results'),

    path('<int:question_id>/vote/', views.vote, name='vote'),

]

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[Chetan Ganji]

It seems to me like you are not entering the url name
In place of 'polls:vote' try to enter the name of the url given to that url For Your Reference https://docs.djangoproject.com/en/4.1/ref/templates/builtins/#url
I hope it helps you!

Regards,

Chetan Ganji

+91-900-483-4183

ganji....@gmail.com

http://ryucoder.in

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