On Jun 14, 2:13 pm, Sithembewena Lloyd Dube <zebr...@gmail.com> wrote:
> Hi all,
>
> I have a "vote" view and "detail" template in the Polls application that I
> am writing. The idea is that the user will see a "vote" page where they can
> select one of two radio buttons for a choice to the poll, and click "vote".
> This takes them to a "results" page where they can view the poll and its
> choices. That works fine. However, if a choice is not selected, the user
> should be sent to the "detail" page, where an error message will be shown
> stating that no choice was selected. This is not happening - when I haven't
> selected a choice, the "vote" page is reloaded upon submitting the form.
>
> Please see the vote view and detail template code below:
>
> *VOTE VIEW*
> 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_to_response('polls/detail.html', {'poll': p,
> 'error_message': "You didn't select a choice.",
> }, context_instance=RequestContext(request))*
> 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('myproject.polls.views.results',
> args=(p.id,)))
>
> *DETAIL TEMPLATE*
> <h1>{{ poll.question }}</h1>
>
> *{% if error_message %}<p><strong>{{ error_messsage }}</strong></p>{% endif
> %}
> *
> <form action="/polls/{{ poll.id }}/vote/" method="post">
> {% 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}}</label><br />
>
> {% endfor %}
> <input type="submit" value="Vote" />
> </form>
>
> Any anomalies here?
>
> Thanks.
>
> --
> Regards,
> Sithembewena Lloyd Dubehttp://www.lloyddube.com
You're trying to run before you can walk. Finish the tutorial, then
read the forms framework documentation (http://docs.djangoproject.com/
en/1.2/topics/forms/) which will explain how Django does all this for
you.
--
DR.
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