CODEWITHSUNDEEP
django
Ankit
Ankit

Reputation: 394

NoReverseMatch at /polls/1/vote/

There are three question on Stack overflow with slightly different error.In mine argument is also being passed but I just don't seem to figure out what the error is?

NoReverseMatch at /polls/1/vote/
    Reverse for 'result' with arguments '(1,)' and keyword arguments '{}' not found. 0 pattern(s) tried: []
    Request Method: POST
    Request URL:    http://localhost:8000/polls/1/vote/
    Django Version: 1.8.2
    Exception Type: NoReverseMatch
    Exception Value:    
    Reverse for 'result' with arguments '(1,)' and keyword arguments '{}' not found. 0 pattern(s) tried: []
    Exception Location: C:\Python27\Lib\site-packages\django\core\urlresolvers.py in _reverse_with_prefix, line 496
    Python Executable:  C:\Python27\python.exe

Here is my polls/views.py

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse, Http404, HttpResponseRedirect
from django.core.urlresolvers import reverse

from .models import Movie, Rating
# Create your views here.

def detail(request, movie_id):
    try:
        movie = get_object_or_404(Movie,pk = movie_id)
    except Movie.DoesNotExist:
        raise Http404("Movie not found")
    return render(request, 'polls/detail.html', {'movie': movie})

def result(request, movie_id):
    movie = get_object_or_404(Movie, pk = movie_id)
    return render(request, 'polls/result.html', {'movie': movie})

def vote(request, movie_id):
    p = get_object_or_404(Movie, pk = movie_id)
    try:
        selected_rating = p.rating_set.get(pk=request.POST['rating'])
    except(KeyError, Rating.DoesNotExist):
        return render(request, 'polls/detail.html', {'movie':p, 'error_message':"you didn't select a rating",})
    else:
        selected_rating.votes += 1
        selected_rating.save()
        return HttpResponseRedirect(reverse('polls:result', args=(p.id,)))

Please ask me if you need any additional file I will put them here.

Here is detail.html

<h1> {{movie.movie_text}}</h1>

{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="{% url 'polls:vote' movie.id %}" method="post">
{% csrf_token %}
{% for rating in movie.rating_set.all %}
    <input type="radio" name="rating" id="rating{{ forloop.counter }}" value="{{ rating.id }}" />
    <label for="rating{{ forloop.counter }}">{{ rating.rating_number }}</label><br />
{% endfor %}
<input type="submit" value="Vote" />
</form>

and here is result.html

<h1>{{movie.movie_text}}</h1>

<ul>
    {% for rating in movie.rating_set.all%}
    <li>{{rating.rating_text}} -- {{rating.votes }} vote{{rating.votes|pluralize}}</li>
    {% endfor %}
</ul>

<a href="{% url 'polls:detail' movie.id %}">Vote Again? </a>

Here is polls/urls.py

from django.conf.urls import url

from . import views

urlpatterns = [
    #ex: /polls/
    url(r'^$', views.index, name = 'index'),
    #ex /polls/5/
    url(r'^(?P<movie_id>[0-9]+)/$', views.detail, name='detail'),

    url(r'^(?P<movie_id>[0-9]+)/result/$', views.result, name='results'),

    url(r'^(?P<movie_id>[0-9]+)/vote/$', views.vote, name='vote')
]

Here is mysite/urls.py

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^polls/', include('polls.urls', namespace='polls')),
]

Upvotes: 2

Views: 2669

Answers (2)

Pravin
Pravin

Reputation: 11

In my case, I got this error cause I was not returning redirect instead I was trying to render the 'detail.html' template when the post was successful

Upvotes: 0

Daniel Roseman
Daniel Roseman

Reputation: 599648

You haven't got a view named "polls:result", you have one named "polls:results". Either change the name in polls/urls.py, or the value you use in the call to reverse in the vote view.

Upvotes: 1

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