forked from CGM_Public/pretix_original
f95e8f374d
- [x] data model - [x] api - [x] backend editor - [x] backend validation logic - [x] frontend display logic - [x] frontend validation logic - [x] test checkout step - [x] test modify order in frontend - [x] test modify order in backend - [x] validation tests - [x] correctly evaluate dependency tree in frontend? - [x] copy events
40 lines
1.7 KiB
Python
40 lines
1.7 KiB
Python
from django.db.models import Prefetch
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from django.utils.functional import cached_property
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from pretix.base.models import Question, QuestionAnswer, QuestionOption
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from pretix.base.views.mixins import BaseQuestionsViewMixin
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from pretix.presale.forms.checkout import QuestionsForm
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from pretix.presale.views import get_cart
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class QuestionsViewMixin(BaseQuestionsViewMixin):
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form_class = QuestionsForm
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only_user_visible = True
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@cached_property
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def _positions_for_questions(self):
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qqs = self.request.event.questions.all()
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if self.only_user_visible:
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qqs = qqs.filter(ask_during_checkin=False)
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cart = get_cart(self.request).select_related(
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'addon_to'
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).prefetch_related(
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'addons', 'addons__item', 'addons__variation',
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Prefetch('answers',
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QuestionAnswer.objects.prefetch_related('options'),
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to_attr='answerlist'),
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Prefetch('item__questions',
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qqs.prefetch_related(
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Prefetch('options', QuestionOption.objects.prefetch_related(Prefetch(
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# This prefetch statement is utter bullshit, but it actually prevents Django from doing
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# a lot of queries since ModelChoiceIterator stops trying to be clever once we have
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# a prefetch lookup on this query...
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'question',
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Question.objects.none(),
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to_attr='dummy'
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)))
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).select_related('dependency_question'),
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to_attr='questions_to_ask')
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)
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return sorted(list(cart), key=self._keyfunc)
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