forked from CGM_Public/pretix_original
93 lines
3.9 KiB
Python
93 lines
3.9 KiB
Python
import sys
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from django.db.models import Count, Prefetch, Q
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from django.utils.timezone import now
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from django.views.generic import TemplateView
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from pretix.base.models import ItemVariation
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from . import CartMixin, EventViewMixin
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def item_group_by_category(items):
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return sorted(
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[
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# a group is a tuple of a category and a list of items
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(cat, [i for i in items if i.category == cat])
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for cat in set([i.category for i in items])
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# insert categories into a set for uniqueness
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# a set is unsorted, so sort again by category
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],
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key=lambda group: (group[0].position, group[0].id) if (
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group[0] is not None and group[0].id is not None) else (0, 0)
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)
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def get_grouped_items(event):
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items = event.items.all().filter(
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Q(active=True)
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& Q(Q(available_from__isnull=True) | Q(available_from__lte=now()))
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& Q(Q(available_until__isnull=True) | Q(available_until__gte=now()))
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& Q(hide_without_voucher=False)
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).select_related(
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'category', # for re-grouping
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).prefetch_related(
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'variations__quotas', # for .availability()
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Prefetch('quotas',
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queryset=event.quotas.all()),
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Prefetch('variations', to_attr='available_variations',
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queryset=ItemVariation.objects.filter(active=True, quotas__isnull=False).distinct()),
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).annotate(
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quotac=Count('quotas'),
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has_variations=Count('variations')
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).filter(
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quotac__gt=0
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).order_by('category__position', 'category_id', 'position', 'name')
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display_add_to_cart = False
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quota_cache = {}
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for item in items:
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if not item.has_variations:
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item.cached_availability = list(item.check_quotas(_cache=quota_cache))
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item.order_max = min(item.cached_availability[1]
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if item.cached_availability[1] is not None else sys.maxsize,
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int(event.settings.max_items_per_order))
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item.price = item.default_price
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display_add_to_cart = display_add_to_cart or item.order_max > 0
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else:
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for var in item.available_variations:
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var.cached_availability = list(var.check_quotas(_cache=quota_cache))
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var.order_max = min(var.cached_availability[1]
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if var.cached_availability[1] is not None else sys.maxsize,
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int(event.settings.max_items_per_order))
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display_add_to_cart = display_add_to_cart or var.order_max > 0
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var.price = var.default_price if var.default_price is not None else item.default_price
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if len(item.available_variations) > 0:
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item.min_price = min([v.price for v in item.available_variations])
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item.max_price = max([v.price for v in item.available_variations])
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items = [item for item in items if len(item.available_variations) > 0 or not item.has_variations]
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return items, display_add_to_cart
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class EventIndex(EventViewMixin, CartMixin, TemplateView):
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template_name = "pretixpresale/event/index.html"
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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# Fetch all items
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items, display_add_to_cart = get_grouped_items(self.request.event)
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# Regroup those by category
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context['items_by_category'] = item_group_by_category(items)
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context['display_add_to_cart'] = display_add_to_cart
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vouchers_exist = self.request.event.get_cache().get('vouchers_exist')
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if vouchers_exist is None:
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vouchers_exist = self.request.event.vouchers.exists()
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self.request.event.get_cache().set('vouchers_exist', vouchers_exist)
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context['vouchers_exist'] = vouchers_exist
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context['cart'] = self.get_cart()
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context['frontpage_text'] = str(self.request.event.settings.frontpage_text)
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return context
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