annotate polls/forms.py @ 631:f36d1a168be7
For issue 27, disable login dialog button during POST.
This seems to prevent multiple logins most of the time. You can
still bang on the enter key and sometimes get more through.
| author |
Brian Neal <bgneal@gmail.com> |
| date |
Wed, 14 Nov 2012 20:57:05 -0600 |
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ee87ea74d46b |
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| rev |
line source |
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1 """Forms for the Polls application."""
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2
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3 from django import forms
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4 from django.db.models import F
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5
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6 from polls.models import Choice
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7
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8
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9 class VoteForm(forms.Form):
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10 """Form for voting in a poll."""
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11 choices = forms.ModelChoiceField(label='', empty_label=None,
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12 queryset=Choice.objects.none(), widget=forms.RadioSelect)
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13
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14 def __init__(self, poll, *args, **kwargs):
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15 self.user = kwargs.pop('user', None)
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16 self.user_choice = kwargs.pop('user_choice', None)
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17 super(VoteForm, self).__init__(*args, **kwargs)
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18 self.fields['choices'].queryset = poll.choice_set.all()
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19
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20 def clean(self):
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21 if self.user_choice:
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22 raise forms.ValidationError("You've already voted in this poll!")
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23 return self.cleaned_data
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24
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25 def save(self):
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26 choice = self.cleaned_data['choices']
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27 Choice.objects.filter(id=choice.id).update(votes=F('votes') + 1)
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28 choice.voters.add(self.user)
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