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PODjango: Reverse for 'detail' with arguments '('',)' and keyword arguments '{}' not found
 

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  1. PODjango: Reverse for 'detail' with arguments '('',)' and keyword arguments '{}' not found
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    <p>I'm following the official tutorial to learn Django and using 1.5.</p> <p>I had this link as part of my index template, which was working fine:</p> <pre><code>&lt;li&gt;&lt;a href="/polls/{{ poll.id }}/"&gt;{{ poll.question }}&lt;/a&gt;&lt;/li&gt; </code></pre> <p>however, this is hardcoded and the tutorial suggested a better way was to use:</p> <pre><code>&lt;li&gt;&lt;a href="{% url 'detail' poll.id %}"&gt;{{ poll.question }}&lt;/a&gt;&lt;/li&gt; </code></pre> <p>so that you'll be better of when dealing with huge number of templates and u have to make changes to the url.</p> <p>Since I made the above change I get the following errors when I run the app:</p> <pre><code>Exception Type: NoReverseMatch Exception Value: Reverse for 'detail' with arguments '('',)' and keyword arguments '{}' not found. </code></pre> <p>My urls.py looks like this:</p> <pre><code>from django.conf.urls import patterns, url from polls import views urlpatterns = patterns('', url(r'^$', views.index, name='index'), url(r'^(?P&lt;poll_id&gt;\d+)/$', views.detail, name='detail'), url(r'^(?P&lt;poll_id&gt;\d+)/results/$', views.results, name='results'), url(r'^(?P&lt;poll_id&gt;\d+)/vote/$', views.vote, name='vote'), ) </code></pre> <p>views.py looks like this:</p> <pre><code>from django.shortcuts import render, get_object_or_404 from django.http import Http404 from polls.models import Poll def index(request): latest_poll_list = Poll.objects.order_by('-pub_date')[:5] context = {'latest_poll_list': latest_poll_list} return render(request, 'polls/index.html', context) def detail(request, poll_id): poll = get_object_or_404(Poll, pk = poll_id) return render(request, 'polls/detail.html', {'poll': poll}) </code></pre> <p>my index.html template looks like this:</p> <pre><code>{% if latest_poll_list %} &lt;ul&gt; {% for poll in latest_poll_list %} &lt;li&gt;&lt;a href="{% url 'polls:detail' poll_id %}"&gt;{{ poll.question }}&lt;/a&gt;&lt;/li&gt; {% endfor %} &lt;/ul&gt; {% else %} &lt;p&gt; No polls are available.&lt;/p&gt; {% endif %} </code></pre> <p>Usually I could easily read where the error is coming from and deal with it but in this case I can't spot the cause of the error hence I'm unable to progress with my study. Any help will be greatly appreciated.</p>
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    1. USdmvianna
    1. USfromPythonImportNoob
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    1. COOne thing I noticed is that you use namespace notation (`polls:detail`) in `index.html`, but don't define `polls` as a namespace in your `urlpatterns`. Try make it just `detail` without `polls:` for a moment. And shouldn't `poll_id` be `poll.id` there?
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      1. USThijs van Dien
    2. COthanks very much.. The problem was with poll_id instead of poll.id. it works now. Can you put it up as the answer so i can accept it? thanks again
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      1. USfromPythonImportNoob
 

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