mirror of
https://github.com/pretix/pretix.git
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511 lines
22 KiB
Python
511 lines
22 KiB
Python
import calendar
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import hashlib
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import json
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import logging
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from collections import defaultdict
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from datetime import date, datetime, timedelta
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from urllib.parse import urljoin
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import pytz
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from django.conf import settings
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from django.contrib.staticfiles import finders
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from django.core.cache import cache
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from django.core.files.base import ContentFile
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from django.core.files.storage import default_storage
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from django.db.models import Q
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from django.http import FileResponse, Http404, HttpResponse, JsonResponse
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from django.template import Context, Engine
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from django.template.loader import get_template
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from django.utils.formats import date_format
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from django.utils.timezone import now
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from django.utils.translation import get_language, ugettext
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from django.utils.translation.trans_real import DjangoTranslation
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from django.views import View
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from django.views.decorators.cache import cache_page
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from django.views.decorators.http import condition
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from django.views.i18n import (
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JavaScriptCatalog, get_formats, js_catalog_template,
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)
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from lxml import etree
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from pretix.base.i18n import language
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from pretix.base.models import CartPosition, Event, Quota, SubEvent, Voucher
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from pretix.base.services.cart import error_messages
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from pretix.base.settings import GlobalSettingsObject
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from pretix.base.templatetags.rich_text import rich_text
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from pretix.helpers.daterange import daterange
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from pretix.helpers.thumb import get_thumbnail
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from pretix.multidomain.urlreverse import build_absolute_uri
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from pretix.presale.views.cart import get_or_create_cart_id
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from pretix.presale.views.event import (
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get_grouped_items, item_group_by_category,
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)
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from pretix.presale.views.organizer import (
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EventListMixin, add_events_for_days, add_subevents_for_days,
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filter_qs_by_attr, weeks_for_template,
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)
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logger = logging.getLogger(__name__)
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def indent(s):
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return s.replace('\n', '\n ')
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def widget_css_etag(request, **kwargs):
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o = getattr(request, 'event', request.organizer)
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return o.settings.presale_widget_css_checksum or o.settings.presale_widget_css_checksum
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def widget_js_etag(request, lang, **kwargs):
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gs = GlobalSettingsObject()
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return gs.settings.get('widget_checksum_{}'.format(lang))
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@condition(etag_func=widget_css_etag)
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@cache_page(60)
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def widget_css(request, **kwargs):
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o = getattr(request, 'event', request.organizer)
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if o.settings.presale_widget_css_file:
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resp = FileResponse(default_storage.open(o.settings.presale_widget_css_file),
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content_type='text/css')
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return resp
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else:
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tpl = get_template('pretixpresale/widget_dummy.html')
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et = etree.fromstring(tpl.render({})).attrib['href'].replace(settings.STATIC_URL, '')
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f = finders.find(et)
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resp = FileResponse(open(f, 'rb'), content_type='text/css')
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return resp
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def generate_widget_js(lang):
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code = []
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with language(lang):
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# Provide isolation
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code.append('(function (siteglobals) {\n')
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code.append('var module = {}, exports = {};\n')
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code.append('var lang = "%s";\n' % lang)
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c = JavaScriptCatalog()
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c.translation = DjangoTranslation(lang, domain='djangojs')
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catalog, plural = c.get_catalog(), c.get_plural()
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str_wl = (
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'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su',
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'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August',
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'September', 'October', 'November', 'December'
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)
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catalog = dict((k, v) for k, v in catalog.items() if k.startswith('widget\u0004') or k in str_wl)
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template = Engine().from_string(js_catalog_template)
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context = Context({
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'catalog_str': indent(json.dumps(
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catalog, sort_keys=True, indent=2)) if catalog else None,
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'formats_str': indent(json.dumps(
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get_formats(), sort_keys=True, indent=2)),
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'plural': plural,
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})
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code.append(template.render(context))
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files = [
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'vuejs/vue.js' if settings.DEBUG else 'vuejs/vue.min.js',
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'vuejs/vue-resize.min.js',
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'pretixpresale/js/widget/docready.js',
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'pretixpresale/js/widget/floatformat.js',
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'pretixpresale/js/widget/widget.js',
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]
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for fname in files:
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f = finders.find(fname)
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with open(f, 'r') as fp:
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code.append(fp.read())
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if settings.DEBUG:
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code.append('})(this);\n')
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else:
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# Do not expose debugging variables
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code.append('})({});\n')
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return ''.join(code)
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@condition(etag_func=widget_js_etag)
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@cache_page(1 if settings.DEBUG else 60)
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def widget_js(request, lang, **kwargs):
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if lang not in [lc for lc, ll in settings.LANGUAGES]:
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raise Http404()
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gs = GlobalSettingsObject()
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fname = gs.settings.get('widget_file_{}'.format(lang))
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resp = None
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if fname and not settings.DEBUG:
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try:
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resp = HttpResponse(default_storage.open(fname).read(), content_type='text/javascript')
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except:
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logger.critical('Failed to open widget.js')
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if not resp:
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data = generate_widget_js(lang).encode()
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checksum = hashlib.sha1(data).hexdigest()
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if not settings.DEBUG:
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newname = default_storage.save(
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'widget/widget.{}.{}.js'.format(lang, checksum),
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ContentFile(data)
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)
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gs.settings.set('widget_file_{}'.format(lang), 'file://' + newname)
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gs.settings.set('widget_checksum_{}'.format(lang), checksum)
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resp = HttpResponse(data, content_type='text/javascript')
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return resp
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def price_dict(item, price):
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return {
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'gross': price.gross,
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'net': price.net,
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'tax': price.tax,
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'rate': price.rate,
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'name': str(price.name),
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'includes_mixed_tax_rate': item.includes_mixed_tax_rate,
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}
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def get_picture(event, picture):
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return urljoin(build_absolute_uri(event, 'presale:event.index'), get_thumbnail(picture.name, '60x60^').thumb.url)
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class WidgetAPIProductList(EventListMixin, View):
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def _get_items(self):
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items, display_add_to_cart = get_grouped_items(
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self.request.event, subevent=self.subevent, voucher=self.voucher, channel='web'
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)
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grps = []
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for cat, g in item_group_by_category(items):
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grps.append({
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'id': cat.pk if cat else None,
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'name': str(cat.name) if cat else None,
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'description': str(rich_text(cat.description, safelinks=False)) if cat and cat.description else None,
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'items': [
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{
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'id': item.pk,
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'name': str(item.name),
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'picture': get_picture(self.request.event, item.picture) if item.picture else None,
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'description': str(rich_text(item.description, safelinks=False)) if item.description else None,
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'has_variations': item.has_variations,
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'require_voucher': item.require_voucher,
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'order_min': item.min_per_order,
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'order_max': item.order_max if not item.has_variations else None,
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'price': price_dict(item, item.display_price) if not item.has_variations else None,
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'min_price': item.min_price if item.has_variations else None,
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'max_price': item.max_price if item.has_variations else None,
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'free_price': item.free_price,
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'avail': [
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item.cached_availability[0],
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item.cached_availability[1] if self.request.event.settings.show_quota_left else None
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] if not item.has_variations else None,
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'original_price': item.original_price,
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'variations': [
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{
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'id': var.id,
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'value': str(var.value),
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'order_max': var.order_max,
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'description': str(rich_text(var.description, safelinks=False)) if var.description else None,
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'price': price_dict(item, var.display_price),
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'original_price': getattr(var, 'original_price') or item.original_price,
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'avail': [
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var.cached_availability[0],
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var.cached_availability[1] if self.request.event.settings.show_quota_left else None
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],
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} for var in item.available_variations
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]
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} for item in g
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]
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})
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return grps, display_add_to_cart, len(items)
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def response(self, data):
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resp = JsonResponse(data)
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resp['Access-Control-Allow-Origin'] = '*'
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return resp
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def get(self, request, *args, **kwargs):
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if not hasattr(request, 'event'):
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return self._get_event_list(request, **kwargs)
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if not request.event.live:
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return self.response({
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'error': ugettext('This ticket shop is currently disabled.')
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})
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self.subevent = None
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if request.event.has_subevents:
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if 'subevent' in kwargs:
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self.subevent = request.event.subevents.filter(pk=kwargs['subevent'], active=True).first()
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if not self.subevent:
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return self.response({
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'error': ugettext('The selected date does not exist in this event series.')
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})
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else:
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return self._get_event_list(request, **kwargs)
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else:
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if 'subevent' in kwargs:
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return self.response({
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'error': ugettext('This is not an event series.')
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})
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return self._get_event_view(request, **kwargs)
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def dispatch(self, request, *args, **kwargs):
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if 'lang' in request.GET and request.GET.get('lang') in [lc for lc, ll in settings.LANGUAGES]:
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with language(request.GET.get('lang')):
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return self.get(request, **kwargs)
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else:
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return self.get(request, **kwargs)
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def _get_availability(self, ev, event):
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availability = {}
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if ev.presale_is_running and event.settings.event_list_availability and ev.best_availability_state is not None:
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if ev.best_availability_state == Quota.AVAILABILITY_OK:
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availability['color'] = 'green'
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availability['text'] = ugettext('Tickets on sale')
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elif event.settings.waiting_list_enabled and ev.best_availability_state >= 0:
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availability['color'] = 'orange'
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availability['text'] = ugettext('Waiting list')
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elif ev.best_availability_state == Quota.AVAILABILITY_RESERVED:
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availability['color'] = 'orange'
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availability['text'] = ugettext('Reserved')
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elif ev.best_availability_state < Quota.AVAILABILITY_RESERVED:
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availability['color'] = 'red'
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availability['text'] = ugettext('Sold out')
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elif ev.presale_is_running:
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availability['color'] = 'green'
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availability['text'] = ugettext('Tickets on sale')
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elif ev.presale_has_ended:
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availability['color'] = 'red'
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availability['text'] = ugettext('Sale over')
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elif event.settings.presale_start_show_date and ev.presale_start:
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availability['color'] = 'orange'
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availability['text'] = ugettext('from %(start_date)s') % {'start_date': date_format(ev.presale_start, "SHORT_DATE_FORMAT")}
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else:
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availability['color'] = 'orange'
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availability['text'] = ugettext('Sale Soon')
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return availability
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def _serialize_events(self, ebd):
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events = []
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for e in ebd:
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ev = e['event']
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if isinstance(ev, SubEvent):
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event = ev.event
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else:
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event = ev
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tz = pytz.timezone(e['timezone'])
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events.append({
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'name': str(ev.name),
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'time': date_format(ev.date_from.astimezone(tz), 'TIME_FORMAT') if e.get('time') and event.settings.show_times else
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None,
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'continued': e['continued'],
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'date_range': ev.get_date_range_display() + (
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" " + date_format(ev.date_from.astimezone(tz), "TIME_FORMAT") if event.settings.show_times else ""
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),
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'availability': self._get_availability(ev, event),
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'event_url': build_absolute_uri(event, 'presale:event.index'),
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'subevent': ev.pk if isinstance(ev, SubEvent) else None,
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})
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return events
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def _get_event_list(self, request, **kwargs):
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data = {}
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o = getattr(request, 'event', request.organizer)
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list_type = self.request.GET.get("style", o.settings.event_list_type)
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data['list_type'] = list_type
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cache_key = ':'.join([
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'widget.py',
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'eventlist',
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request.organizer.slug,
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request.event.slug if hasattr(request, 'event') else '-',
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list_type,
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request.GET.get("year") or "-",
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request.GET.get("month") or "-",
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request.GET.get("old") or "-",
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get_language(),
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])
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cached_data = cache.get(cache_key)
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if cached_data:
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return self.response(cached_data)
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if list_type == "calendar":
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self._set_month_year()
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_, ndays = calendar.monthrange(self.year, self.month)
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data['date'] = date(self.year, self.month, 1)
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if hasattr(self.request, 'event'):
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tz = pytz.timezone(self.request.event.settings.timezone)
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else:
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tz = pytz.UTC
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before = datetime(self.year, self.month, 1, 0, 0, 0, tzinfo=tz) - timedelta(days=1)
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after = datetime(self.year, self.month, ndays, 0, 0, 0, tzinfo=tz) + timedelta(days=1)
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ebd = defaultdict(list)
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if hasattr(self.request, 'event'):
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add_subevents_for_days(
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self.request.event.subevents_annotated('web'),
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before, after, ebd, set(), self.request.event,
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kwargs.get('cart_namespace')
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)
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else:
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timezones = set()
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add_events_for_days(self.request, Event.annotated(self.request.organizer.events, 'web'), before, after, ebd, timezones)
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add_subevents_for_days(filter_qs_by_attr(SubEvent.annotated(SubEvent.objects.filter(
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event__organizer=self.request.organizer,
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event__is_public=True,
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event__live=True,
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).prefetch_related(
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'event___settings_objects', 'event__organizer___settings_objects'
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)), self.request), before, after, ebd, timezones)
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data['weeks'] = weeks_for_template(ebd, self.year, self.month)
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for w in data['weeks']:
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for d in w:
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if not d:
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continue
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d['events'] = self._serialize_events(d['events'] or [])
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else:
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if hasattr(self.request, 'event'):
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evs = self.request.event.subevents_sorted(
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self.request.event.subevents_annotated(self.request.sales_channel)
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)
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tz = pytz.timezone(request.event.settings.timezone)
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data['events'] = [
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{
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'name': str(ev.name),
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'date_range': ev.get_date_range_display(tz) + (
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(" " + ev.get_time_from_display(tz)) if ev.event.settings.show_times else ""
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),
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'availability': self._get_availability(ev, ev.event),
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'event_url': build_absolute_uri(ev.event, 'presale:event.index'),
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'subevent': ev.pk,
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} for ev in evs
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]
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else:
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data['events'] = []
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qs = self._get_event_queryset()
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for event in qs:
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tz = pytz.timezone(event.cache.get_or_set('timezone', lambda: event.settings.timezone))
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if event.has_subevents:
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dr = daterange(
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event.min_from.astimezone(tz),
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(event.max_fromto or event.max_to or event.max_from).astimezone(tz)
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)
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avail = {'color': 'none', 'text': ugettext('Event series')}
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else:
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dr = event.get_date_range_display(tz) + (
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" " + event.get_time_from_display(tz) if event.settings.show_times else ""
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)
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avail = self._get_availability(event, event)
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data['events'].append({
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'name': str(event.name),
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'date_range': dr,
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'availability': avail,
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'event_url': build_absolute_uri(event, 'presale:event.index'),
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})
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cache.set(cache_key, data, 30)
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# These pages are cached for a really short duration – this should make them pretty accurate, while still
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# providing some protection against burst traffic.
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return self.response(data)
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def _get_event_view(self, request, **kwargs):
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cache_key = ':'.join([
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'widget.py',
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'event',
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request.organizer.slug,
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request.event.slug,
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str(self.subevent.pk) if self.subevent else "",
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request.GET.get("voucher") or "-",
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get_language(),
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])
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if "cart_id" not in request.GET:
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cached_data = cache.get(cache_key)
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if cached_data:
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return self.response(cached_data)
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data = {
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'currency': request.event.currency,
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'display_net_prices': request.event.settings.display_net_prices,
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'show_variations_expanded': request.event.settings.show_variations_expanded,
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'waiting_list_enabled': request.event.settings.waiting_list_enabled,
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'error': None,
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'cart_exists': False
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}
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if 'cart_id' in request.GET and CartPosition.objects.filter(event=request.event, cart_id=request.GET.get('cart_id')).exists():
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data['cart_exists'] = True
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ev = self.subevent or request.event
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data['name'] = str(ev.name)
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fail = False
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if not ev.presale_is_running:
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if ev.presale_has_ended:
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if request.event.settings.presale_has_ended_text:
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data['error'] = str(request.event.settings.presale_has_ended_text)
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else:
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data['error'] = ugettext('The presale period for this event is over.')
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elif request.event.settings.presale_start_show_date:
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data['error'] = ugettext('The presale for this event will start on %(date)s at %(time)s.') % {
|
||
'date': date_format(ev.presale_start.astimezone(request.event.timezone), "SHORT_DATE_FORMAT"),
|
||
'time': date_format(ev.presale_start.astimezone(request.event.timezone), "TIME_FORMAT"),
|
||
}
|
||
else:
|
||
data['error'] = ugettext('The presale 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'] = self._get_items()
|
||
data['display_add_to_cart'] = data['display_add_to_cart'] and ev.presale_is_running
|
||
else:
|
||
data['items_by_category'] = []
|
||
data['display_add_to_cart'] = False
|
||
data['itemnum'] = 0
|
||
|
||
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 "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)
|