annotate gpp/polls/forms.py @ 467:b910cc1460c8
Add the ability to conditionally add model instances to the search index on update. This is not perfect, as some instances should be deleted from the index if they are updated such that they should not be in the index anymore. Will think about and address that later.
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Brian Neal <bgneal@gmail.com> |
| date |
Sun, 24 Jul 2011 18:12:20 +0000 |
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1f139de929c4 |
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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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