# # This file is part of pretix (Community Edition). # # Copyright (C) 2014-2020 Raphael Michel and contributors # Copyright (C) 2020-today pretix GmbH and contributors # # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General # Public License as published by the Free Software Foundation in version 3 of the License. # # ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are # applicable granting you additional permissions and placing additional restrictions on your usage of this software. # Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive # this file, see . # # This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied # warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more # details. # # You should have received a copy of the GNU Affero General Public License along with this program. If not, see # . # import calendar import hashlib import json import logging import time from collections import defaultdict from datetime import date, datetime, timedelta from urllib.parse import urljoin from zoneinfo import ZoneInfo import isoweek from compressor.filters.jsmin import rJSMinFilter from django.conf import settings from django.contrib.staticfiles import finders from django.core.cache import cache from django.core.files.base import ContentFile, File from django.core.files.storage import default_storage from django.db.models import Q from django.http import FileResponse, Http404, HttpResponse, JsonResponse from django.template import Context, Engine from django.template.loader import get_template from django.utils.formats import date_format from django.utils.timezone import now from django.utils.translation import get_language, gettext, pgettext from django.utils.translation.trans_real import DjangoTranslation from django.views import View from django.views.decorators.cache import cache_page from django.views.decorators.gzip import gzip_page from django.views.decorators.http import condition from django.views.i18n import ( JavaScriptCatalog, get_formats, js_catalog_template, ) from lxml import html from pretix.base.context import get_powered_by from pretix.base.i18n import language from pretix.base.models import ( CartPosition, Event, ItemVariation, Quota, SubEvent, Voucher, ) from pretix.base.services.cart import error_messages from pretix.base.services.placeholders import PlaceholderContext from pretix.base.settings import GlobalSettingsObject from pretix.base.templatetags.rich_text import rich_text from pretix.helpers.daterange import daterange from pretix.helpers.thumb import get_thumbnail from pretix.multidomain.urlreverse import build_absolute_uri from pretix.presale.forms.organizer import meta_filtersets from pretix.presale.style import get_theme_vars_css from pretix.presale.views.cart import get_or_create_cart_id from pretix.presale.views.event import ( get_grouped_items, item_group_by_category, ) from pretix.presale.views.organizer import ( EventListMixin, add_events_for_days, add_subevents_for_days, days_for_template, filter_qs_by_attr, filter_subevents_with_plugins, weeks_for_template, ) logger = logging.getLogger(__name__) # we never change static source without restart, so we can cache this thread-wise _source_cache_key = None version_min = 2 version_max = 2 version_default = 2 # used for output in widget-embed-code def _get_source_cache_key(version): global _source_cache_key checksum = hashlib.sha256() if not _source_cache_key: with open(finders.find("pretixbase/scss/_theme_variables.scss"), "r") as f: checksum.update(f.read().encode()) template_path = 'pretixpresale/widget_dummy.html' if version == version_max else 'pretixpresale/widget_dummy.v{}.html'.format(version) tpl = get_template(template_path) et = html.fromstring(tpl.render()).xpath('/html/head/link')[0].attrib['href'].replace(settings.STATIC_URL, '') checksum.update(et.encode()) _source_cache_key = checksum.hexdigest()[:12] return _source_cache_key def indent(s): return s.replace('\n', '\n ') def widget_css_etag(request, version, **kwargs): if version > version_max: return None if version < version_min: version = version_min # This makes sure a new version of the theme is loaded whenever settings or the source files have changed if hasattr(request, 'event'): return (f'{_get_source_cache_key(version)}-' f'{request.organizer.cache.get_or_set("css_version", default=lambda: int(time.time()))}-' f'{request.event.cache.get_or_set("css_version", default=lambda: int(time.time()))}') else: return f'{_get_source_cache_key(version)}-{request.organizer.cache.get_or_set("css_version", default=lambda: int(time.time()))}' def widget_js_etag(request, version, lang, **kwargs): gs = GlobalSettingsObject() return gs.settings.get('widget_checksum_{}_{}'.format(version, lang)) @gzip_page @condition(etag_func=widget_css_etag) @cache_page(60) def widget_css(request, version, **kwargs): if version > version_max: raise Http404() if version < version_min: version = version_min o = getattr(request, 'event', request.organizer) template_path = 'pretixpresale/widget_dummy.html' if version == version_max else 'pretixpresale/widget_dummy.v{}.html'.format(version) tpl = get_template(template_path) et = html.fromstring(tpl.render()).xpath('/html/head/link')[0].attrib['href'].replace(settings.STATIC_URL, '') with open(finders.find(et), 'r') as f: widget_css = f.read() theme_css = get_theme_vars_css(o, widget=True) css = f"/* v{version} */\n" + theme_css + widget_css resp = FileResponse(css, content_type='text/css') resp._csp_ignore = True resp['Access-Control-Allow-Origin'] = '*' return resp def generate_widget_js(version, lang): code = [] with language(lang): # Provide isolation code.append('(function (siteglobals) {\n') code.append('var module = {}, exports = {};\n') code.append('var lang = "%s";\n' % lang) c = JavaScriptCatalog() c.translation = DjangoTranslation(lang, domain='djangojs') catalog, plural = c.get_catalog(), c.get_plural() str_wl = ( 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su', 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' ) catalog = dict((k, v) for k, v in catalog.items() if k.startswith('widget\u0004') or k in str_wl) template = Engine().from_string(js_catalog_template) context = Context({ 'catalog_str': indent(json.dumps( catalog, sort_keys=True, indent=2)) if catalog else None, 'formats_str': indent(json.dumps( get_formats(), sort_keys=True, indent=2)), 'plural': plural, }) i18n_js = template.render(context) i18n_js = i18n_js.replace('for (const ', 'for (var ') # remove if we really want to break IE11 for good i18n_js = i18n_js.replace(r"value.includes(", r"-1 != value.indexOf(") # remove if we really want to break IE11 for good code.append(i18n_js) files = [ 'vuejs/vue.js' if settings.DEBUG else 'vuejs/vue.min.js', 'pretixpresale/js/widget/docready.js', 'pretixpresale/js/widget/floatformat.js', 'pretixpresale/js/widget/widget.js' if version == version_max else 'pretixpresale/js/widget/widget.v{}.js'.format(version), ] for fname in files: f = finders.find(fname) with open(f, 'r', encoding='utf-8') as fp: code.append(fp.read()) if settings.DEBUG: code.append('})(this);\n') else: # Do not expose debugging variables code.append('})({});\n') code = ''.join(code) code = rJSMinFilter(content=code).output() return f"/* v{version} */\n" + code @gzip_page @condition(etag_func=widget_js_etag) def widget_js(request, version, lang, **kwargs): if version > version_max or lang not in [lc for lc, ll in settings.LANGUAGES]: raise Http404() if version < version_min: version = version_min cached_js = cache.get('widget_js_data_v{}_{}'.format(version, lang)) if cached_js and not settings.DEBUG: resp = HttpResponse(cached_js, content_type='text/javascript') resp._csp_ignore = True resp['Access-Control-Allow-Origin'] = '*' return resp gs = GlobalSettingsObject() fname = gs.settings.get('widget_file_v{}_{}'.format(version, lang)) resp = None if fname and not settings.DEBUG: if isinstance(fname, File): fname = fname.name try: data = default_storage.open(fname).read() resp = HttpResponse(data, content_type='text/javascript') cache.set('widget_js_data_v{}_{}'.format(version, lang), data, 3600 * 4) except: logger.exception('Failed to open widget.js') if not resp: data = generate_widget_js(version, lang).encode() checksum = hashlib.sha1(data).hexdigest() if not settings.DEBUG: newname = default_storage.save( 'widget/widget.{}.{}.{}.js'.format(version, lang, checksum), ContentFile(data) ) gs.settings.set('widget_file_v{}_{}'.format(version, lang), 'file://' + newname) gs.settings.set('widget_checksum_v{}_{}'.format(version, lang), checksum) cache.set('widget_js_data_v{}_{}'.format(version, lang), data, 3600 * 4) resp = HttpResponse(data, content_type='text/javascript') resp._csp_ignore = True resp['Access-Control-Allow-Origin'] = '*' return resp def price_dict(item, price): return { 'gross': price.gross, 'net': price.net, 'tax': price.tax, 'rate': price.rate, 'name': str(price.name), 'includes_mixed_tax_rate': item.includes_mixed_tax_rate, } def get_picture(event, picture, size=None): thumb = None if size: try: thumb = get_thumbnail(picture.name, size).thumb.url except: logger.exception(f'Failed to create thumbnail of {picture.name}') if not thumb: thumb = default_storage.url(picture.name) return urljoin(build_absolute_uri(event, 'presale:event.index'), thumb) class WidgetAPIProductList(EventListMixin, View): def _get_items(self): qs = self.request.event.items if 'items' in self.request.GET: qs = qs.filter(pk__in=[pk.strip() for pk in self.request.GET.get('items').split(",") if pk.strip().isdigit()]) if 'categories' in self.request.GET: qs = qs.filter(category__pk__in=[pk.strip() for pk in self.request.GET.get('categories').split(",") if pk.strip().isdigit()]) variation_filter = None if 'variations' in self.request.GET: variation_filter = [int(pk.strip()) for pk in self.request.GET.get('variations').split(",") if pk.strip().isdigit()] qs = qs.filter( pk__in=ItemVariation.objects.filter( item__event=self.request.event, pk__in=variation_filter, ).values_list('item_id', flat=True) ) items, display_add_to_cart = get_grouped_items( self.request.event, subevent=self.subevent, voucher=self.voucher, channel=self.request.sales_channel, base_qs=qs, require_seat=None, memberships=( self.request.customer.usable_memberships( for_event=self.subevent or self.request.event, testmode=self.request.event.testmode ) if getattr(self.request, 'customer', None) else None ), ) grps = [] for cat, g in item_group_by_category([i for i in items if not i.requires_seat]): grps.append({ 'id': cat.pk if cat else None, 'name': str(cat.name) if cat else None, 'description': str(rich_text(cat.description, safelinks=False)) if cat and cat.description else None, 'items': [ { 'id': item.pk, 'name': str(item.name), 'picture': get_picture(self.request.event, item.picture, '60x60^') if item.picture else None, 'picture_fullsize': get_picture(self.request.event, item.picture) if item.picture else None, 'description': str(rich_text(item.description, safelinks=False)) if item.description else None, 'has_variations': item.has_variations, 'current_unavailability_reason': item.current_unavailability_reason, 'order_min': item.min_per_order, 'order_max': item.order_max if not item.has_variations else None, 'price': price_dict(item, item.display_price) if not item.has_variations else None, 'suggested_price': price_dict(item, item.suggested_price) if not item.has_variations else None, 'min_price': item.min_price if item.has_variations else None, 'max_price': item.max_price if item.has_variations else None, 'allow_waitinglist': item.allow_waitinglist, 'mandatory_priced_addons': item.mandatory_priced_addons, 'free_price': item.free_price, 'avail': [ item.cached_availability[0], item.cached_availability[1] if item.do_show_quota_left else None ] if not item.has_variations else None, 'original_price': ( (item.original_price.net if self.request.event.settings.display_net_prices else item.original_price.gross) if item.original_price else None ), 'variations': [ { 'id': var.id, 'value': str(var.value), 'order_max': var.order_max, 'description': str(rich_text(var.description, safelinks=False)) if var.description else None, 'price': price_dict(item, var.display_price), 'suggested_price': price_dict(item, var.suggested_price), 'original_price': ( ( var.original_price.net if self.request.event.settings.display_net_prices else var.original_price.gross ) if var.original_price else None ) or ( ( item.original_price.net if self.request.event.settings.display_net_prices else item.original_price.gross ) if item.original_price else None ), 'avail': [ var.cached_availability[0], var.cached_availability[1] if item.do_show_quota_left else None ], 'current_unavailability_reason': var.current_unavailability_reason, } for var in item.available_variations if (not variation_filter or var.id in variation_filter) ] } for item in g ] }) return grps, display_add_to_cart, len(items), items def post_process(self, data): data['poweredby'] = get_powered_by(self.request, safelink=False) def response(self, data): self.post_process(data) resp = JsonResponse(data) resp['Access-Control-Allow-Origin'] = '*' resp._csp_ignore = True return resp def get(self, request, *args, **kwargs): if not hasattr(request, 'event'): return self._get_event_list(request, **kwargs) if not request.event.live: return self.response({ 'error': gettext('This ticket shop is currently disabled.') }) if not request.event.all_sales_channels and request.sales_channel.identifier not in (s.identifier for s in request.event.limit_sales_channels.all()): return self.response({ 'error': gettext('Tickets for this event cannot be purchased on this sales channel.') }) self.subevent = None if request.event.has_subevents: if 'subevent' in kwargs: self.subevent = request.event.subevents.filter(pk=kwargs['subevent'], active=True).first() if not self.subevent: return self.response({ 'error': gettext('The selected date does not exist in this event series.') }) # Prevent direct access to subevents that are hidden by a plugin subevents = filter_subevents_with_plugins([self.subevent], request.sales_channel) if self.subevent not in subevents: return self.response({ 'error': gettext('The selected date is not available.') }) else: return self._get_event_list(request, **kwargs) else: if 'subevent' in kwargs: return self.response({ 'error': gettext('This is not an event series.') }) return self._get_event_view(request, **kwargs) def dispatch(self, request, *args, **kwargs): o = getattr(request, 'event', request.organizer) if 'lang' in request.GET and request.GET.get('lang') in [lc for lc, ll in settings.LANGUAGES]: with language(request.GET.get('lang'), o.settings.region): return self.get(request, **kwargs) else: return self.get(request, **kwargs) def _get_availability(self, ev, event, tz=None): availability = {} if ev.presale_is_running and event.settings.event_list_availability: if ev.best_availability_state == Quota.AVAILABILITY_OK: if ev.best_availability_is_low: availability['color'] = 'green' availability['text'] = gettext('Few tickets left') availability['reason'] = 'low' else: availability['color'] = 'green' if ev.has_paid_item: availability['text'] = pgettext('available_event_in_list', 'Buy now') else: availability['text'] = gettext('Book now') availability['reason'] = 'ok' elif ev.waiting_list_active and (ev.best_availability_state is not None and ev.best_availability_state >= 0): availability['color'] = 'orange' availability['text'] = gettext('Waiting list') availability['reason'] = 'waitinglist' elif ev.best_availability_state == Quota.AVAILABILITY_RESERVED: availability['color'] = 'red' availability['text'] = gettext('Reserved') availability['reason'] = 'reserved' elif ev.best_availability_state is not None and ev.best_availability_state < Quota.AVAILABILITY_RESERVED: availability['color'] = 'red' if ev.has_paid_item: availability['text'] = gettext('Sold out') else: availability['text'] = gettext('Fully booked') availability['reason'] = 'full' else: # unknown / no product availability['color'] = 'none' availability['text'] = gettext('More info') availability['reason'] = 'unknown' elif ev.presale_is_running: availability['color'] = 'green' availability['text'] = gettext('Book now') availability['reason'] = 'ok' elif ev.presale_has_ended: availability['color'] = 'red' availability['text'] = gettext('Sale over') availability['reason'] = 'over' elif event.settings.presale_start_show_date and ev.effective_presale_start: availability['color'] = 'orange' availability['text'] = gettext('from %(start_date)s') % { 'start_date': date_format(ev.effective_presale_start.astimezone(tz or event.timezone), "SHORT_DATE_FORMAT") } availability['reason'] = 'soon' else: availability['color'] = 'orange' availability['text'] = gettext('Soon') availability['reason'] = 'soon' return availability def _get_date_range(self, ev, event, tz=None): tz = tz or event.timezone dr = ev.get_date_range_display(tz) if event.settings.show_times: dr += " " + date_format(ev.date_from.astimezone(tz), "TIME_FORMAT") if event.settings.show_date_to and ev.date_to and ev.date_from.astimezone(tz).date() == ev.date_to.astimezone(tz).date(): dr += " – " + date_format(ev.date_to.astimezone(tz), "TIME_FORMAT") return dr def _serialize_events(self, ebd): events = [] for e in ebd: ev = e['event'] if isinstance(ev, SubEvent): event = ev.event else: event = ev tz = ZoneInfo(e['timezone']) time = date_format(ev.date_from.astimezone(tz), 'TIME_FORMAT') if e.get('time') and event.settings.show_times else None if time and ev.date_to and ev.date_from.astimezone(tz).date() == ev.date_to.astimezone(tz).date() and event.settings.show_date_to: time += ' – ' + date_format(ev.date_to.astimezone(tz), 'TIME_FORMAT') events.append({ 'name': str(ev.name), 'time': time, 'continued': e['continued'], 'location': str(ev.location), 'date_range': self._get_date_range(ev, event, tz=tz), 'availability': self._get_availability(ev, event, tz=tz), 'event_url': build_absolute_uri(event, 'presale:event.index'), 'subevent': ev.pk if isinstance(ev, SubEvent) else None, }) return events def _get_event_list(self, request, **kwargs): data = {} o = getattr(request, 'event', request.organizer) list_type = self.request.GET.get("style", o.settings.event_list_type) data['list_type'] = list_type data['meta_filter_fields'] = [ {**v, "key": k} for k, v in meta_filtersets(request.organizer, getattr(request, 'event', None)).items() ] if hasattr(self.request, 'event') and data['list_type'] not in ("calendar", "week"): # only allow list-view of more than 50 subevents if ordering is by data as this can be done in the database # ordering by name is currently not supported in database due to I18NField-JSON ordering = self.request.event.settings.get('frontpage_subevent_ordering', default='date_ascending', as_type=str) if ordering not in ("date_ascending", "date_descending") and self.request.event.subevents.filter(date_from__gt=now()).count() > 50: if self.request.event.settings.event_list_type not in ("calendar", "week"): self.request.event.settings.event_list_type = "calendar" data['list_type'] = list_type = 'calendar' if hasattr(self.request, 'event'): data['name'] = str(request.event.name) data['frontpage_text'] = str(rich_text(request.event.settings.frontpage_text, safelinks=False)) cache_key = ':'.join([ 'widget.py', 'eventlist', request.organizer.slug, request.event.slug if hasattr(request, 'event') else '-', list_type, request.GET.urlencode(), get_language(), ]) cached_data = cache.get(cache_key) if cached_data: return self.response(cached_data) if list_type == "calendar": self._set_month_year() _, ndays = calendar.monthrange(self.year, self.month) data['date'] = date(self.year, self.month, 1) if hasattr(self.request, 'event'): tz = self.request.event.timezone else: tz = self.request.organizer.timezone before = datetime(self.year, self.month, 1, 0, 0, 0, tzinfo=tz) - timedelta(days=1) after = datetime(self.year, self.month, ndays, 0, 0, 0, tzinfo=tz) + timedelta(days=1) if hasattr(self.request, 'event') and self.request.event.settings.event_calendar_future_only: limit_before = min(after, now().astimezone(tz)) else: limit_before = before ebd = defaultdict(list) if hasattr(self.request, 'event'): add_subevents_for_days( filter_qs_by_attr( self.request.event.subevents_annotated(self.request.sales_channel).filter( Q(event__all_sales_channels=True) | Q(event__limit_sales_channels=self.request.sales_channel), ), self.request ), before=limit_before, after=after, ebd=ebd, timezones=set(), event=self.request.event, cart_namespace=kwargs.get('cart_namespace'), sales_channel=self.request.sales_channel, ) else: timezones = set() add_events_for_days( self.request, filter_qs_by_attr( Event.annotated(self.request.organizer.events, self.request.sales_channel).filter( Q(all_sales_channels=True) | Q(limit_sales_channels=self.request.sales_channel), ), self.request ), before=limit_before, after=after, ebd=ebd, timezones=timezones, ) add_subevents_for_days( filter_qs_by_attr(SubEvent.annotated(SubEvent.objects.filter( Q(event__all_sales_channels=True) | Q(event__limit_sales_channels__identifier=self.request.sales_channel.identifier), event__organizer=self.request.organizer, event__is_public=True, event__live=True, ).prefetch_related( 'event___settings_objects', 'event__organizer___settings_objects' ), self.request.sales_channel), self.request), before=limit_before, after=after, ebd=ebd, timezones=timezones, sales_channel=self.request.sales_channel, ) data['weeks'] = weeks_for_template(ebd, self.year, self.month) for w in data['weeks']: for d in w: if not d: continue d['events'] = self._serialize_events(d['events'] or []) elif list_type == "week": self._set_week_year() if hasattr(self.request, 'event'): tz = self.request.event.timezone else: tz = self.request.organizer.timezone week = isoweek.Week(self.year, self.week) data['week'] = [self.year, self.week] before = datetime( week.monday().year, week.monday().month, week.monday().day, 0, 0, 0, tzinfo=tz ) - timedelta(days=1) after = datetime( week.sunday().year, week.sunday().month, week.sunday().day, 0, 0, 0, tzinfo=tz ) + timedelta(days=1) if hasattr(self.request, 'event') and self.request.event.settings.event_calendar_future_only: limit_before = now().astimezone(tz) else: limit_before = before ebd = defaultdict(list) if hasattr(self.request, 'event'): add_subevents_for_days( filter_qs_by_attr(self.request.event.subevents_annotated(self.request.sales_channel), self.request), before=limit_before, after=after, ebd=ebd, timezones=set(), event=self.request.event, cart_namespace=kwargs.get('cart_namespace'), sales_channel=self.request.sales_channel, ) else: timezones = set() add_events_for_days( self.request, filter_qs_by_attr(Event.annotated(self.request.organizer.events, self.request.sales_channel), self.request), limit_before, after, ebd, timezones ) add_subevents_for_days( filter_qs_by_attr(SubEvent.annotated(SubEvent.objects.filter( event__organizer=self.request.organizer, event__is_public=True, event__live=True, ).prefetch_related( 'event___settings_objects', 'event__organizer___settings_objects' ), self.request.sales_channel), self.request), before=limit_before, after=after, ebd=ebd, timezones=timezones, sales_channel=self.request.sales_channel, ) data['days'] = days_for_template(ebd, week) for d in data['days']: d['events'] = self._serialize_events(d['events'] or []) else: offset = int(self.request.GET.get("offset", 0)) limit = 50 if hasattr(self.request, 'event'): evs = filter_qs_by_attr( self.request.event.subevents_annotated(self.request.sales_channel), self.request, match_subevents_with_conditions=( Q(Q(date_to__isnull=True) & Q(date_from__gte=now() - timedelta(hours=24))) | Q(date_to__gte=now() - timedelta(hours=24)) ), ) evs = self.request.event.subevents_sorted(evs) ordering = self.request.event.settings.get('frontpage_subevent_ordering', default='date_ascending', as_type=str) data['has_more_events'] = False if ordering in ("date_ascending", "date_descending"): # fetch one more result than needed to check if more events exist evs = list(evs[offset:offset + limit + 1]) if len(evs) > limit: data['has_more_events'] = True evs = evs[:limit] tz = request.event.timezone if self.request.event.settings.event_list_available_only: evs = [ se for se in evs if not se.presale_has_ended and ( se.best_availability_state is not None and se.best_availability_state >= Quota.AVAILABILITY_RESERVED ) ] data['events'] = [ { 'name': str(ev.name), 'location': str(ev.location), 'date_range': self._get_date_range(ev, ev.event, tz), 'availability': self._get_availability(ev, ev.event, tz=tz), 'event_url': build_absolute_uri(ev.event, 'presale:event.index'), 'subevent': ev.pk, } for ev in evs ] else: data['events'] = [] qs = self._get_event_list_queryset() for event in qs: tz = ZoneInfo(event.cache.get_or_set('timezone', lambda: event.settings.timezone)) if event.has_subevents: dr = daterange( event.min_from.astimezone(tz), (event.max_fromto or event.max_to or event.max_from).astimezone(tz) ) avail = {'color': 'none', 'text': gettext('Event series')} else: dr = self._get_date_range(event, event, tz) avail = self._get_availability(event, event, tz=tz) data['events'].append({ 'name': str(event.name), 'location': str(event.location), 'date_range': dr, 'availability': avail, 'event_url': build_absolute_uri(event, 'presale:event.index'), }) cache.set(cache_key, data, 30) # These pages are cached for a really short duration – this should make them pretty accurate, while still # providing some protection against burst traffic. return self.response(data) def _get_event_view(self, request, **kwargs): cache_key = ':'.join([ 'widget.py', 'event', request.organizer.slug, request.event.slug, str(self.subevent.pk) if self.subevent else "", request.GET.urlencode(), get_language(), request.sales_channel.identifier, ]) if "cart_id" not in request.GET: cached_data = cache.get(cache_key) if cached_data: return self.response(cached_data) data = { 'target_url': build_absolute_uri(request.event, 'presale:event.index'), 'subevent': self.subevent.pk if self.subevent else None, 'currency': request.event.currency, 'display_net_prices': request.event.settings.display_net_prices, 'use_native_spinners': request.event.settings.widget_use_native_spinners, 'show_variations_expanded': request.event.settings.show_variations_expanded, 'waiting_list_enabled': (self.subevent or request.event).waiting_list_active, 'voucher_explanation_text': str(rich_text(request.event.settings.voucher_explanation_text, safelinks=False)), 'error': None, 'cart_exists': False } if 'cart_id' in request.GET and CartPosition.objects.filter(event=request.event, cart_id=request.GET.get('cart_id')).exists(): data['cart_exists'] = True ev = self.subevent or request.event data['name'] = str(ev.name) templating_context = PlaceholderContext(event_or_subevent=ev, event=request.event) if self.subevent: data['frontpage_text'] = str(rich_text(templating_context.format(str(self.subevent.frontpage_text)), safelinks=False)) data['location'] = str(rich_text(self.subevent.location, safelinks=False)) else: data['frontpage_text'] = str(rich_text(templating_context.format(str(request.event.settings.frontpage_text)), safelinks=False)) data['location'] = str(rich_text(request.event.location, safelinks=False)) data['date_range'] = self._get_date_range(ev, request.event) fail = False vouchers_exist = self.request.event.get_cache().get('vouchers_exist') if vouchers_exist is None: vouchers_exist = self.request.event.vouchers.exists() self.request.event.get_cache().set('vouchers_exist', vouchers_exist) data['vouchers_exist'] = vouchers_exist if not ev.presale_is_running: data['vouchers_exist'] = False if ev.presale_has_ended: if request.event.settings.presale_has_ended_text: data['error'] = str(request.event.settings.presale_has_ended_text) else: data['error'] = gettext('The booking period for this event is over.') elif request.event.settings.presale_start_show_date: data['error'] = gettext('The booking period for this event will start on %(date)s at %(time)s.') % { 'date': date_format(ev.effective_presale_start.astimezone(request.event.timezone), "SHORT_DATE_FORMAT"), 'time': date_format(ev.effective_presale_start.astimezone(request.event.timezone), "TIME_FORMAT"), } else: data['error'] = gettext('The booking period for this event has not yet started.') self.voucher = None if 'voucher' in request.GET: try: self.voucher = request.event.vouchers.get(code__iexact=request.GET.get('voucher').strip()) if self.voucher.redeemed >= self.voucher.max_usages: data['error'] = error_messages['voucher_redeemed'] fail = True if self.voucher.valid_until is not None and self.voucher.valid_until < now(): data['error'] = error_messages['voucher_expired'] fail = True cart_id = get_or_create_cart_id(request, create=False) if cart_id: redeemed_in_carts = CartPosition.objects.filter( Q(voucher=self.voucher) & Q(event=request.event) & (Q(expires__gte=now()) | Q(cart_id=get_or_create_cart_id(request))) ) else: redeemed_in_carts = CartPosition.objects.filter( Q(voucher=self.voucher) & Q(event=request.event) & Q(expires__gte=now()) ) v_avail = self.voucher.max_usages - self.voucher.redeemed - redeemed_in_carts.count() if v_avail < 1: data['error'] = error_messages['voucher_redeemed'] fail = True except Voucher.DoesNotExist: data['error'] = error_messages['voucher_invalid'] fail = True if not fail and (ev.presale_is_running or request.event.settings.show_items_outside_presale_period): data['items_by_category'], data['display_add_to_cart'], data['itemnum'], items = self._get_items() data['display_add_to_cart'] = data['display_add_to_cart'] and ev.presale_is_running else: items = [] data['items_by_category'] = [] data['display_add_to_cart'] = False data['itemnum'] = 0 data['vouchers_exist'] = False data['has_seating_plan'] = ev.seating_plan is not None data['has_seating_plan_waitinglist'] = False if ev.waiting_list_active and ev.presale_is_running: for i in items: if not i.allow_waitinglist or not i.requires_seat: continue if i.has_variations: for v in i.available_variations: if v.cached_availability[0] != Quota.AVAILABILITY_OK: data['has_seating_plan_waitinglist'] = True break else: if i.cached_availability[0] != Quota.AVAILABILITY_OK: data['has_seating_plan_waitinglist'] = True break if "cart_id" not in request.GET: cache.set(cache_key, data, 10) # These pages are cached for a really short duration – this should make them pretty accurate with # regards to availability display, while still providing some protection against burst traffic. return self.response(data)