harmonize date-format for checkin CSV-export

Currently translated at 100.0% (5093 of 5093 strings)

Translation: pretix/pretix
Translate-URL: https://translate.pretix.eu/projects/pretix/pretix/de_Informal/

powered by weblate

.github/workflows/docs.yml

@@ -26,10 +26,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip

.github/workflows/strings.yml

@@ -24,10 +24,10 @@ jobs:
     name: Check gettext syntax
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -50,10 +50,10 @@ jobs:
     name: Spellcheck
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip

.github/workflows/style.yml

@@ -24,10 +24,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -45,10 +45,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - uses: actions/cache@v1
         with:
           path: ~/.cache/pip
@@ -66,10 +66,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@v1
         with:
-          python-version: 3.9
+          python-version: 3.11
       - name: Install Dependencies
         run: pip3 install licenseheaders
       - name: Run licenseheaders

.github/workflows/tests.yml

@@ -24,22 +24,22 @@ jobs:
     name: Tests
     strategy:
       matrix:
-        python-version: ["3.7", "3.9", "3.10"]
+        python-version: ["3.9", "3.10", "3.11"]
         database: [sqlite, postgres, mysql]
         exclude:
-          - database: mysql
-            python-version: "3.10"
           - database: mysql
             python-version: "3.9"
+          - database: mysql
+            python-version: "3.11"
           - database: sqlite
-            python-version: "3.7"
+            python-version: "3.9"
           - database: sqlite
             python-version: "3.10"
     steps:
       - uses: actions/checkout@v2
       - uses: getong/mariadb-action@v1.1
         with:
-          mariadb version: '10.4'
+          mariadb version: '10.10'
           mysql database: 'pretix'
           mysql root password: ''
         if: matrix.database == 'mysql'
@@ -83,4 +83,4 @@ jobs:
           file: src/coverage.xml
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true
-        if: matrix.database == 'postgres' && matrix.python-version == '3.10'
+        if: matrix.database == 'postgres' && matrix.python-version == '3.11'

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9-bullseye
+FROM python:3.11-bullseye
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \

doc/admin/installation/manual_smallscale.rst

@@ -23,7 +23,7 @@ installation guides):
 
 * A SMTP server to send out mails, e.g. `Postfix`_ on your machine or some third-party server you have credentials for
 * A HTTP reverse proxy, e.g. `nginx`_ or Apache to allow HTTPS connections
-* A `PostgreSQL`_ 9.6+ database server
+* A `PostgreSQL`_ 11+ database server
 * A `redis`_ server
 * A `nodejs`_ installation
 
@@ -127,7 +127,7 @@ We now install pretix, its direct dependencies and gunicorn::
 
     (venv)$ pip3 install pretix gunicorn
 
-Note that you need Python 3.7 or newer. You can find out your Python version using ``python -V``.
+Note that you need Python 3.9 or newer. You can find out your Python version using ``python -V``.
 
 We also need to create a data directory::
 

src/pretix/__init__.py

@@ -19,4 +19,4 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-__version__ = "4.16.0"
+__version__ = "4.17.0.dev0"

src/pretix/base/models/event.py

@@ -36,7 +36,7 @@ import logging
 import os
 import string
 import uuid
-from collections import OrderedDict
+from collections import Counter, OrderedDict, defaultdict
 from datetime import datetime, time, timedelta
 from operator import attrgetter
 from urllib.parse import urljoin
@@ -340,64 +340,104 @@ class EventMixin:
             )
         )
 
-    @cached_property
+    @property
     def best_availability_state(self):
+        return self.best_availability[0]
+
+    @property
+    def best_availability_is_low(self):
+        """
+        Returns ``True`` if the availability of tickets in this event is lower than the percentage
+        given in setting ``low_availability_percentage``.
+        """
+        if not self.settings.low_availability_percentage:
+            return False
+        ba = self.best_availability
+        if ba[1] is None or not ba[2]:
+            return False
+
+        percentage = ba[1] / ba[2] * 100
+        return percentage < self.settings.low_availability_percentage
+
+    @cached_property
+    def best_availability(self):
+        """
+        Returns a 3-tuple of
+
+        - The availability state of this event (one of the ``Quota.AVAILABILITY_*`` constants)
+        - The number of tickets currently available (or ``None``)
+        - The number of tickets "originally" available (or ``None``)
+
+        This can only be called on objects obtained through a queryset that has been passed through ``.annotated()``.
+        """
         from .items import Quota
 
         if not hasattr(self, 'active_quotas'):
             raise TypeError("Call this only if you fetched the subevents via Event/SubEvent.annotated()")
-        items_available = set()
-        vars_available = set()
-        items_reserved = set()
-        vars_reserved = set()
-        items_gone = set()
-        vars_gone = set()
-        items_disabled = set()
-        vars_disabled = set()
 
         if hasattr(self, 'disabled_items'):  # SubEventItem
             items_disabled = set(self.disabled_items.split(","))
+        else:
+            items_disabled = set()
 
         if hasattr(self, 'disabled_vars'):  # SubEventItemVariation
             vars_disabled = set(self.disabled_vars.split(","))
+        else:
+            vars_disabled = set()
 
+        # Compute the availability of all quotas and build a item→quotas mapping with all non-disabled items
         r = getattr(self, '_quota_cache', {})
+        quotas_for_item = defaultdict(list)
+        quotas_for_variation = defaultdict(list)
         for q in self.active_quotas:
-            res = r[q] if q in r else q.availability(allow_cache=True)
+            if q not in r:
+                r[q] = q.availability(allow_cache=True)
 
-            if res[0] == Quota.AVAILABILITY_OK:
+            if q.active_items:
-                if q.active_items:
+                for item_id in q.active_items.split(","):
-                    items_available.update(q.active_items.split(","))
+                    if item_id not in items_disabled:
-                if q.active_variations:
+                        quotas_for_item[item_id].append(q)
-                    vars_available.update(q.active_variations.split(","))
+            if q.active_variations:
-            elif res[0] == Quota.AVAILABILITY_RESERVED:
+                for var_id in q.active_variations.split(","):
-                if q.active_items:
+                    if var_id not in vars_disabled:
-                    items_reserved.update(q.active_items.split(","))
+                        quotas_for_variation[var_id].append(q)
-                if q.active_variations:
-                    vars_reserved.update(q.active_variations.split(","))
-            elif res[0] < Quota.AVAILABILITY_RESERVED:
-                if q.active_items:
-                    items_gone.update(q.active_items.split(","))
-                if q.active_variations:
-                    vars_gone.update(q.active_variations.split(","))
 
-        items_available -= items_disabled
+        if not self.active_quotas or (not quotas_for_item and not quotas_for_variation):
-        items_reserved -= items_disabled
+            # No item is enabled for this event, treat the event as "unknown"
-        items_gone -= items_disabled
+            return None, None, None
-        vars_available -= vars_disabled
-        vars_reserved -= vars_disabled
-        vars_gone -= vars_disabled
 
-        if not self.active_quotas or (
+        # We iterate over all items and variations and keep track of
-            not items_available and not items_reserved and not items_gone and not vars_gone and not vars_available and not vars_reserved
+        # - `best_state_found` - the best availability state we have seen so far. If one item is available, the event is available!
-        ):
+        # - `num_tickets_found` - the number of tickets currently available in total. We sum up all the items and variations, but keep
-            return None
+        #   track of them per-quota in `quota_used_for_found_tickets` to make sure we don't count the same tickets twice if two or more
+        #   items share the same quota
+        # - `num_tickets_possible` - basically the same thing, just with the total size of quotas instead of their currently availability
+        #   since we need that for the percentage calculation
+        best_state_found = Quota.AVAILABILITY_GONE
+        num_tickets_found = 0
+        num_tickets_possible = 0
+        quota_used_for_found_tickets = Counter()
+        quota_used_for_possible_tickets = Counter()
+        for quota_list in list(quotas_for_item.values()) + list(quotas_for_variation.values()):
+            worst_state_for_ticket = min(r[q][0] for q in quota_list)
+            quotas_that_are_not_unlimited = [q for q in quota_list if q.size is not None]
+            if not quotas_that_are_not_unlimited:
+                # We found an unlimited ticket, no more need to do anything else
+                return Quota.AVAILABILITY_OK, None, None
 
-        if items_available - items_reserved - items_gone or vars_available - vars_reserved - vars_gone:
+            if worst_state_for_ticket == Quota.AVAILABILITY_OK:
-            return Quota.AVAILABILITY_OK
+                availability_of_this = min(max(0, r[q][1] - quota_used_for_found_tickets[q]) for q in quotas_that_are_not_unlimited)
-        if items_reserved - items_gone or vars_reserved - vars_gone:
+                num_tickets_found += availability_of_this
-            return Quota.AVAILABILITY_RESERVED
+                for q in quota_list:
-        return Quota.AVAILABILITY_GONE
+                    quota_used_for_found_tickets[q] += availability_of_this
+
+            possible_of_this = min(max(0, q.size - quota_used_for_possible_tickets[q]) for q in quotas_that_are_not_unlimited)
+            num_tickets_possible += possible_of_this
+            for q in quota_list:
+                quota_used_for_possible_tickets[q] += possible_of_this
+
+            best_state_found = max(best_state_found, worst_state_for_ticket)
+        return best_state_found, num_tickets_found, num_tickets_possible
 
     def free_seats(self, ignore_voucher=None, sales_channel='web', include_blocked=False):
         qs_annotated = self._seats(ignore_voucher=ignore_voucher)
@@ -591,6 +631,7 @@ class Event(EventMixin, LoggedModel):
         self.settings.invoice_email_attachment = True
         self.settings.name_scheme = 'given_family'
         self.settings.payment_banktransfer_invoice_immediately = True
+        self.settings.low_availability_percentage = 10
 
     @property
     def social_image(self):

src/pretix/base/models/orders.py

@@ -1635,7 +1635,7 @@ class OrderPayment(models.Model):
                 logger.info('Failed payment {} but ignored due to likely race condition.'.format(
                     self.full_id,
                 ))
-                return
+                return False
 
             if isinstance(info, str):
                 locked_instance.info = info
@@ -1651,6 +1651,7 @@ class OrderPayment(models.Model):
             'info': info,
             'data': log_data,
         }, user=user, auth=auth)
+        return True
 
     def confirm(self, count_waitinglist=True, send_mail=True, force=False, user=None, auth=None, mail_text='',
                 ignore_date=False, lock=True, payment_date=None, generate_invoice=True):

src/pretix/base/pdf.py

@@ -862,6 +862,10 @@ class Renderer:
             self._get_text_content(op, order, o) or "",
         ).replace("\n", "<br/>\n").replace("-", "-&hairsp;")
 
+        # reportlab does not support unicode combination characters
+        # It's important we do this before we use ArabicReshaper
+        text = unicodedata.normalize("NFKC", text)
+
         # reportlab does not support RTL, ligature-heavy scripts like Arabic. Therefore, we use ArabicReshaper
         # to resolve all ligatures and python-bidi to switch RTL texts.
         try:
@@ -869,9 +873,6 @@ class Renderer:
         except:
             logger.exception('Reshaping/Bidi fixes failed on string {}'.format(repr(text)))
 
-        # reportlab does not support unicode combination characters
-        text = unicodedata.normalize("NFKC", text)
-
         p = Paragraph(text, style=style)
         w, h = p.wrapOn(canvas, float(o['width']) * mm, 1000 * mm)
         # p_size = p.wrap(float(o['width']) * mm, 1000 * mm)

src/pretix/base/services/cart.py

@@ -43,7 +43,9 @@ from django.db import DatabaseError, transaction
 from django.db.models import Count, Exists, IntegerField, OuterRef, Q, Value
 from django.dispatch import receiver
 from django.utils.timezone import make_aware, now
-from django.utils.translation import gettext as _, pgettext_lazy
+from django.utils.translation import (
+    gettext as _, gettext_lazy, ngettext_lazy, pgettext_lazy,
+)
 from django_scopes import scopes_disabled
 
 from pretix.base.channels import get_all_sales_channels
@@ -81,74 +83,119 @@ class CartError(Exception):
         if msgargs:
             msg = _(msg) % msgargs
         else:
-            msg = _(msg)
+            # force msg to string to make sure lazy-translation is done in current locale-context
+            # otherwise translation might happen in celery-context, which uses default-locale
+            # also translate with _/gettext to keep it backwards compatible
+            msg = _(str(msg))
         super().__init__(msg)
 
 
 error_messages = {
-    'busy': _('We were not able to process your request completely as the '
+    'busy': gettext_lazy(
-              'server was too busy. Please try again.'),
+        'We were not able to process your request completely as the '
-    'empty': _('You did not select any products.'),
+        'server was too busy. Please try again.'
-    'unknown_position': _('Unknown cart position.'),
+    ),
+    'empty': gettext_lazy('You did not select any products.'),
+    'unknown_position': gettext_lazy('Unknown cart position.'),
     'subevent_required': pgettext_lazy('subevent', 'No date was specified.'),
-    'not_for_sale': _('You selected a product which is not available for sale.'),
+    'not_for_sale': gettext_lazy('You selected a product which is not available for sale.'),
-    'unavailable': _('Some of the products you selected are no longer available. '
+    'unavailable': gettext_lazy(
-                     'Please see below for details.'),
+        'Some of the products you selected are no longer available. '
-    'in_part': _('Some of the products you selected are no longer available in '
+        'Please see below for details.'
-                 'the quantity you selected. Please see below for details.'),
+    ),
-    'max_items': _("You cannot select more than %s items per order."),
+    'in_part': gettext_lazy(
-    'max_items_per_product': _("You cannot select more than %(max)s items of the product %(product)s."),
+        'Some of the products you selected are no longer available in '
-    'min_items_per_product': _("You need to select at least %(min)s items of the product %(product)s."),
+        'the quantity you selected. Please see below for details.'
-    'min_items_per_product_removed': _("We removed %(product)s from your cart as you can not buy less than "
+    ),
-                                       "%(min)s items of it."),
+    'max_items': ngettext_lazy(
-    'not_started': _('The booking period for this event has not yet started.'),
+        "You cannot select more than %s item per order.",
-    'ended': _('The booking period for this event has ended.'),
+        "You cannot select more than %s items per order."
-    'payment_ended': _('All payments for this event need to be confirmed already, so no new orders can be created.'),
+    ),
-    'some_subevent_not_started': _('The booking period for this event has not yet started. The affected positions '
+    'max_items_per_product': ngettext_lazy(
-                                   'have been removed from your cart.'),
+        "You cannot select more than %(max)s item of the product %(product)s.",
-    'some_subevent_ended': _('The booking period for one of the events in your cart has ended. The affected '
+        "You cannot select more than %(max)s items of the product %(product)s.",
-                             'positions have been removed from your cart.'),
+        "max"
-    'price_too_high': _('The entered price is to high.'),
+    ),
-    'voucher_invalid': _('This voucher code is not known in our database.'),
+    'min_items_per_product': ngettext_lazy(
-    'voucher_min_usages': _('The voucher code "%(voucher)s" can only be used if you select at least %(number)s '
+        "You need to select at least %(min)s item of the product %(product)s.",
-                            'matching products.'),
+        "You need to select at least %(min)s items of the product %(product)s.",
-    'voucher_min_usages_removed': _('The voucher code "%(voucher)s" can only be used if you select at least '
+        "min"
-                                    '%(number)s matching products. We have therefore removed some positions from '
+    ),
-                                    'your cart that can no longer be purchased like this.'),
+    'min_items_per_product_removed': ngettext_lazy(
-    'voucher_redeemed': _('This voucher code has already been used the maximum number of times allowed.'),
+        "We removed %(product)s from your cart as you can not buy less than %(min)s item of it.",
-    'voucher_redeemed_cart': _('This voucher code is currently locked since it is already contained in a cart. This '
+        "We removed %(product)s from your cart as you can not buy less than %(min)s items of it.",
-                               'might mean that someone else is redeeming this voucher right now, or that you tried '
+        "min"
-                               'to redeem it before but did not complete the checkout process. You can try to use it '
+    ),
-                               'again in %d minutes.'),
+    'not_started': gettext_lazy('The booking period for this event has not yet started.'),
-    'voucher_redeemed_partial': _('This voucher code can only be redeemed %d more times.'),
+    'ended': gettext_lazy('The booking period for this event has ended.'),
-    'voucher_double': _('You already used this voucher code. Remove the associated line from your '
+    'payment_ended': gettext_lazy('All payments for this event need to be confirmed already, so no new orders can be created.'),
-                        'cart if you want to use it for a different product.'),
+    'some_subevent_not_started': gettext_lazy(
-    'voucher_expired': _('This voucher is expired.'),
+        'The booking period for this event has not yet started. The affected positions '
-    'voucher_invalid_item': _('This voucher is not valid for this product.'),
+        'have been removed from your cart.'),
-    'voucher_invalid_seat': _('This voucher is not valid for this seat.'),
+    'some_subevent_ended': gettext_lazy(
-    'voucher_no_match': _('We did not find any position in your cart that we could use this voucher for. If you want '
+        'The booking period for one of the events in your cart has ended. The affected '
-                          'to add something new to your cart using that voucher, you can do so with the voucher '
+        'positions have been removed from your cart.'),
-                          'redemption option on the bottom of the page.'),
+    'price_too_high': gettext_lazy('The entered price is to high.'),
-    'voucher_item_not_available': _(
+    'voucher_invalid': gettext_lazy('This voucher code is not known in our database.'),
+    'voucher_min_usages': gettext_lazy(
+        'The voucher code "%(voucher)s" can only be used if you select at least %(number)s '
+        'matching products.'
+    ),
+    'voucher_min_usages_removed': ngettext_lazy(
+        'The voucher code "%(voucher)s" can only be used if you select at least %(number)s matching products. '
+        'We have therefore removed some positions from your cart that can no longer be purchased like this.',
+        'The voucher code "%(voucher)s" can only be used if you select at least %(number)s matching products. '
+        'We have therefore removed some positions from your cart that can no longer be purchased like this.',
+        'number'
+    ),
+    'voucher_redeemed': gettext_lazy('This voucher code has already been used the maximum number of times allowed.'),
+    'voucher_redeemed_cart': gettext_lazy(
+        'This voucher code is currently locked since it is already contained in a cart. This '
+        'might mean that someone else is redeeming this voucher right now, or that you tried '
+        'to redeem it before but did not complete the checkout process. You can try to use it '
+        'again in %d minutes.'
+    ),
+    'voucher_redeemed_partial': gettext_lazy('This voucher code can only be redeemed %d more times.'),
+    'voucher_whole_cart_not_combined': gettext_lazy('Applying a voucher to the whole cart should not be combined with other operations.'),
+    'voucher_double': gettext_lazy(
+        'You already used this voucher code. Remove the associated line from your '
+        'cart if you want to use it for a different product.'
+    ),
+    'voucher_expired': gettext_lazy('This voucher is expired.'),
+    'voucher_invalid_item': gettext_lazy('This voucher is not valid for this product.'),
+    'voucher_invalid_seat': gettext_lazy('This voucher is not valid for this seat.'),
+    'voucher_no_match': gettext_lazy(
+        'We did not find any position in your cart that we could use this voucher for. If you want '
+        'to add something new to your cart using that voucher, you can do so with the voucher '
+        'redemption option on the bottom of the page.'
+    ),
+    'voucher_item_not_available': gettext_lazy(
         'Your voucher is valid for a product that is currently not for sale.'),
     'voucher_invalid_subevent': pgettext_lazy('subevent', 'This voucher is not valid for this event date.'),
-    'voucher_required': _('You need a valid voucher code to order this product.'),
+    'voucher_required': gettext_lazy('You need a valid voucher code to order this product.'),
     'inactive_subevent': pgettext_lazy('subevent', 'The selected event date is not active.'),
-    'addon_invalid_base': _('You can not select an add-on for the selected product.'),
+    'addon_invalid_base': gettext_lazy('You can not select an add-on for the selected product.'),
-    'addon_duplicate_item': _('You can not select two variations of the same add-on product.'),
+    'addon_duplicate_item': gettext_lazy('You can not select two variations of the same add-on product.'),
-    'addon_max_count': _('You can select at most %(max)s add-ons from the category %(cat)s for the product %(base)s.'),
+    'addon_max_count': ngettext_lazy(
-    'addon_min_count': _('You need to select at least %(min)s add-ons from the category %(cat)s for the '
+        'You can select at most %(max)s add-on from the category %(cat)s for the product %(base)s.',
-                         'product %(base)s.'),
+        'You can select at most %(max)s add-ons from the category %(cat)s for the product %(base)s.',
-    'addon_no_multi': _('You can select every add-ons from the category %(cat)s for the product %(base)s at most once.'),
+        'max'
-    'addon_only': _('One of the products you selected can only be bought as an add-on to another product.'),
+    ),
-    'bundled_only': _('One of the products you selected can only be bought part of a bundle.'),
+    'addon_min_count': ngettext_lazy(
-    'seat_required': _('You need to select a specific seat.'),
+        'You need to select at least %(min)s add-on from the category %(cat)s for the product %(base)s.',
-    'seat_invalid': _('Please select a valid seat.'),
+        'You need to select at least %(min)s add-ons from the category %(cat)s for the product %(base)s.',
-    'seat_forbidden': _('You can not select a seat for this position.'),
+        'min'
-    'seat_unavailable': _('The seat you selected has already been taken. Please select a different seat.'),
+    ),
-    'seat_multiple': _('You can not select the same seat multiple times.'),
+    'addon_no_multi': gettext_lazy('You can select every add-ons from the category %(cat)s for the product %(base)s at most once.'),
-    'gift_card': _("You entered a gift card instead of a voucher. Gift cards can be entered later on when you're asked for your payment details."),
+    'addon_only': gettext_lazy('One of the products you selected can only be bought as an add-on to another product.'),
-    'country_blocked': _('One of the selected products is not available in the selected country.'),
+    'bundled_only': gettext_lazy('One of the products you selected can only be bought part of a bundle.'),
+    'seat_required': gettext_lazy('You need to select a specific seat.'),
+    'seat_invalid': gettext_lazy('Please select a valid seat.'),
+    'seat_forbidden': gettext_lazy('You can not select a seat for this position.'),
+    'seat_unavailable': gettext_lazy('The seat you selected has already been taken. Please select a different seat.'),
+    'seat_multiple': gettext_lazy('You can not select the same seat multiple times.'),
+    'gift_card': gettext_lazy("You entered a gift card instead of a voucher. Gift cards can be entered later on when you're asked for your payment details."),
+    'country_blocked': gettext_lazy('One of the selected products is not available in the selected country.'),
 }
 
 
@@ -320,8 +367,7 @@ class CartManager:
             cartsize -= len([1 for op in self._operations if isinstance(op, self.RemoveOperation) if
                              not op.position.addon_to_id])
             if cartsize > int(self.event.settings.max_items_per_order):
-                # TODO: i18n plurals
+                raise CartError(error_messages['max_items'] % self.event.settings.max_items_per_order)
-                raise CartError(_(error_messages['max_items']) % (self.event.settings.max_items_per_order,))
 
     def _check_item_constraints(self, op, current_ops=[]):
         if isinstance(op, (self.AddOperation, self.ExtendOperation)):
@@ -494,7 +540,7 @@ class CartManager:
 
     def apply_voucher(self, voucher_code: str):
         if self._operations:
-            raise CartError('Applying a voucher to the whole cart should not be combined with other operations.')
+            raise CartError(error_messages['voucher_whole_cart_not_combined'])
         try:
             voucher = self.event.vouchers.get(code__iexact=voucher_code.strip())
         except Voucher.DoesNotExist:
@@ -539,7 +585,7 @@ class CartManager:
         for voucher, cnt in list(voucher_use_diff.items()):
             if 0 < cnt < voucher.min_usages_remaining:
                 raise CartError(
-                    _(error_messages['voucher_min_usages']) % {
+                    error_messages['voucher_min_usages'] % {
                         'voucher': voucher.code,
                         'number': voucher.min_usages_remaining,
                     }
@@ -843,22 +889,16 @@ class CartManager:
                 for (i, v), c in selected.items():
                     n_per_i[i] += c
                 if sum(selected.values()) > iao.max_count:
-                    # TODO: Proper i18n
-                    # TODO: Proper pluralization
                     raise CartError(
-                        error_messages['addon_max_count'],
+                        error_messages['addon_max_count'] % {
-                        {
                             'base': str(item.name),
                             'max': iao.max_count,
                             'cat': str(iao.addon_category.name),
                         }
                     )
                 elif sum(selected.values()) < iao.min_count:
-                    # TODO: Proper i18n
-                    # TODO: Proper pluralization
                     raise CartError(
-                        error_messages['addon_min_count'],
+                        error_messages['addon_min_count'] % {
-                        {
                             'base': str(item.name),
                             'min': iao.min_count,
                             'cat': str(iao.addon_category.name),
@@ -866,8 +906,7 @@ class CartManager:
                     )
                 elif any(v > 1 for v in n_per_i.values()) and not iao.multi_allowed:
                     raise CartError(
-                        error_messages['addon_no_multi'],
+                        error_messages['addon_no_multi'] % {
-                        {
                             'base': str(item.name),
                             'cat': str(iao.addon_category.name),
                         }
@@ -931,7 +970,7 @@ class CartManager:
 
             if item.max_per_order and count > item.max_per_order:
                 raise CartError(
-                    _(error_messages['max_items_per_product']) % {
+                    error_messages['max_items_per_product'] % {
                         'max': item.max_per_order,
                         'product': item.name
                     }
@@ -945,13 +984,13 @@ class CartManager:
                 for p in self.positions:
                     if p.item_id == item.pk and p.pk not in removals:
                         self._operations.append(self.RemoveOperation(position=p))
-                        err = _(error_messages['min_items_per_product_removed']) % {
+                        err = error_messages['min_items_per_product_removed'] % {
                             'min': item.min_per_order,
                             'product': item.name
                         }
                 if not err:
                     raise CartError(
-                        _(error_messages['min_items_per_product']) % {
+                        error_messages['min_items_per_product'] % {
                             'min': item.min_per_order,
                             'product': item.name
                         }
@@ -980,13 +1019,13 @@ class CartManager:
                 for p in self.positions:
                     if p.voucher_id == voucher.pk and p.pk not in removals:
                         self._operations.append(self.RemoveOperation(position=p))
-                        err = _(error_messages['voucher_min_usages_removed']) % {
+                        err = error_messages['voucher_min_usages_removed'] % {
                             'voucher': voucher.code,
                             'number': voucher.min_usages_remaining,
                         }
                 if not err:
                     raise CartError(
-                        _(error_messages['voucher_min_usages']) % {
+                        error_messages['voucher_min_usages'] % {
                             'voucher': voucher.code,
                             'number': voucher.min_usages_remaining,
                         }
@@ -1034,11 +1073,11 @@ class CartManager:
 
                 if voucher_available_count < 1:
                     if op.voucher in self._voucher_depend_on_cart:
-                        err = err or _(error_messages['voucher_redeemed_cart']) % self.event.settings.reservation_time
+                        err = err or (error_messages['voucher_redeemed_cart'] % self.event.settings.reservation_time)
                     else:
                         err = err or error_messages['voucher_redeemed']
                 elif voucher_available_count < requested_count:
-                    err = err or _(error_messages['voucher_redeemed_partial']) % voucher_available_count
+                    err = err or (error_messages['voucher_redeemed_partial'] % voucher_available_count)
 
                 available_count = min(quota_available_count, voucher_available_count)
 

src/pretix/base/services/orders.py

@@ -54,15 +54,13 @@ from django.db.transaction import get_connection
 from django.dispatch import receiver
 from django.utils.functional import cached_property
 from django.utils.timezone import make_aware, now
-from django.utils.translation import gettext as _
+from django.utils.translation import gettext as _, gettext_lazy, ngettext_lazy
 from django_scopes import scopes_disabled
 
 from pretix.api.models import OAuthApplication
 from pretix.base.channels import get_all_sales_channels
 from pretix.base.email import get_email_context
-from pretix.base.i18n import (
+from pretix.base.i18n import get_language_without_region, language
-    LazyLocaleException, get_language_without_region, language,
-)
 from pretix.base.models import (
     CartPosition, Device, Event, GiftCard, Item, ItemVariation, Membership,
     Order, OrderPayment, OrderPosition, Quota, Seat, SeatCategoryMapping, User,
@@ -101,47 +99,94 @@ from pretix.helpers import OF_SELF
 from pretix.helpers.models import modelcopy
 from pretix.helpers.periodic import minimum_interval
 
+
+class OrderError(Exception):
+    def __init__(self, *args):
+        msg = args[0]
+        msgargs = args[1] if len(args) > 1 else None
+        self.args = args
+        if msgargs:
+            msg = _(msg) % msgargs
+        else:
+            # force msg to string to make sure lazy-translation is done in current locale-context
+            # otherwise translation might happen in celery-context, which uses default-locale
+            # also translate with _/gettext to keep it backwards compatible
+            msg = _(str(msg))
+        super().__init__(msg)
+
+
 error_messages = {
-    'unavailable': _('Some of the products you selected were no longer available. '
+    'unavailable': gettext_lazy(
-                     'Please see below for details.'),
+        'Some of the products you selected were no longer available. '
-    'in_part': _('Some of the products you selected were no longer available in '
+        'Please see below for details.'
-                 'the quantity you selected. Please see below for details.'),
+    ),
-    'price_changed': _('The price of some of the items in your cart has changed in the '
+    'in_part': gettext_lazy(
-                       'meantime. Please see below for details.'),
+        'Some of the products you selected were no longer available in '
-    'internal': _("An internal error occurred, please try again."),
+        'the quantity you selected. Please see below for details.'
-    'empty': _("Your cart is empty."),
+    ),
-    'max_items_per_product': _("You cannot select more than %(max)s items of the product %(product)s. We removed the "
+    'price_changed': gettext_lazy(
-                               "surplus items from your cart."),
+        'The price of some of the items in your cart has changed in the '
-    'busy': _('We were not able to process your request completely as the '
+        'meantime. Please see below for details.'
-              'server was too busy. Please try again.'),
+    ),
-    'not_started': _('The booking period for this event has not yet started.'),
+    'internal': gettext_lazy("An internal error occurred, please try again."),
-    'ended': _('The booking period has ended.'),
+    'empty': gettext_lazy("Your cart is empty."),
-    'voucher_min_usages': _('The voucher code "%(voucher)s" can only be used if you select at least %(number)s '
+    'max_items_per_product': ngettext_lazy(
-                            'matching products.'),
+        "You cannot select more than %(max)s item of the product %(product)s. We removed the surplus items from your cart.",
-    'voucher_invalid': _('The voucher code used for one of the items in your cart is not known in our database.'),
+        "You cannot select more than %(max)s items of the product %(product)s. We removed the surplus items from your cart.",
-    'voucher_redeemed': _('The voucher code used for one of the items in your cart has already been used the maximum '
+        "max"
-                          'number of times allowed. We removed this item from your cart.'),
+    ),
-    'voucher_budget_used': _('The voucher code used for one of the items in your cart has already been too often. We '
+    'busy': gettext_lazy(
-                             'adjusted the price of the item in your cart.'),
+        'We were not able to process your request completely as the '
-    'voucher_expired': _('The voucher code used for one of the items in your cart is expired. We removed this item '
+        'server was too busy. Please try again.'
-                         'from your cart.'),
+    ),
-    'voucher_invalid_item': _('The voucher code used for one of the items in your cart is not valid for this item. We '
+    'not_started': gettext_lazy('The booking period for this event has not yet started.'),
-                              'removed this item from your cart.'),
+    'ended': gettext_lazy('The booking period has ended.'),
-    'voucher_required': _('You need a valid voucher code to order one of the products.'),
+    'voucher_min_usages': ngettext_lazy(
-    'some_subevent_not_started': _('The booking period for one of the events in your cart has not yet started. The '
+        'The voucher code "%(voucher)s" can only be used if you select at least %(number)s matching products.',
-                                   'affected positions have been removed from your cart.'),
+        'The voucher code "%(voucher)s" can only be used if you select at least %(number)s matching products.',
-    'some_subevent_ended': _('The booking period for one of the events in your cart has ended. The affected '
+        'number'
-                             'positions have been removed from your cart.'),
+    ),
-    'seat_invalid': _('One of the seats in your order was invalid, we removed the position from your cart.'),
+    'voucher_invalid': gettext_lazy('The voucher code used for one of the items in your cart is not known in our database.'),
-    'seat_unavailable': _('One of the seats in your order has been taken in the meantime, we removed the position from your cart.'),
+    'voucher_redeemed': gettext_lazy(
-    'country_blocked': _('One of the selected products is not available in the selected country.'),
+        'The voucher code used for one of the items in your cart has already been used the maximum '
-    'not_for_sale': _('You selected a product which is not available for sale.'),
+        'number of times allowed. We removed this item from your cart.'
-    'addon_invalid_base': _('You can not select an add-on for the selected product.'),
+    ),
-    'addon_duplicate_item': _('You can not select two variations of the same add-on product.'),
+    'voucher_budget_used': gettext_lazy(
-    'addon_max_count': _('You can select at most %(max)s add-ons from the category %(cat)s for the product %(base)s.'),
+        'The voucher code used for one of the items in your cart has already been too often. We '
-    'addon_min_count': _('You need to select at least %(min)s add-ons from the category %(cat)s for the '
+        'adjusted the price of the item in your cart.'
-                         'product %(base)s.'),
+    ),
-    'addon_no_multi': _('You can select every add-ons from the category %(cat)s for the product %(base)s at most once.'),
+    'voucher_expired': gettext_lazy(
+        'The voucher code used for one of the items in your cart is expired. We removed this item from your cart.'
+    ),
+    'voucher_invalid_item': gettext_lazy(
+        'The voucher code used for one of the items in your cart is not valid for this item. We removed this item from your cart.'
+    ),
+    'voucher_required': gettext_lazy('You need a valid voucher code to order one of the products.'),
+    'some_subevent_not_started': gettext_lazy(
+        'The booking period for one of the events in your cart has not yet started. The '
+        'affected positions have been removed from your cart.'
+    ),
+    'some_subevent_ended': gettext_lazy(
+        'The booking period for one of the events in your cart has ended. The affected '
+        'positions have been removed from your cart.'
+    ),
+    'seat_invalid': gettext_lazy('One of the seats in your order was invalid, we removed the position from your cart.'),
+    'seat_unavailable': gettext_lazy('One of the seats in your order has been taken in the meantime, we removed the position from your cart.'),
+    'country_blocked': gettext_lazy('One of the selected products is not available in the selected country.'),
+    'not_for_sale': gettext_lazy('You selected a product which is not available for sale.'),
+    'addon_invalid_base': gettext_lazy('You can not select an add-on for the selected product.'),
+    'addon_duplicate_item': gettext_lazy('You can not select two variations of the same add-on product.'),
+    'addon_max_count': ngettext_lazy(
+        'You can select at most %(max)s add-on from the category %(cat)s for the product %(base)s.',
+        'You can select at most %(max)s add-ons from the category %(cat)s for the product %(base)s.',
+        'max'
+    ),
+    'addon_min_count': ngettext_lazy(
+        'You need to select at least %(min)s add-on from the category %(cat)s for the product %(base)s.',
+        'You need to select at least %(min)s add-ons from the category %(cat)s for the product %(base)s.',
+        'min'
+    ),
+    'addon_no_multi': gettext_lazy('You can select every add-ons from the category %(cat)s for the product %(base)s at most once.'),
 }
 
 logger = logging.getLogger(__name__)
@@ -157,7 +202,7 @@ def reactivate_order(order: Order, force: bool=False, user: User=None, auth=None
     enough quota.
     """
     if order.status != Order.STATUS_CANCELED:
-        raise OrderError('The order was not canceled.')
+        raise OrderError(_('The order was not canceled.'))
 
     with order.event.lock() as now_dt:
         is_available = order._is_still_available(now_dt, count_waitinglist=False, check_voucher_usage=True,
@@ -538,18 +583,6 @@ def _cancel_order(order, user=None, send_mail: bool=True, api_token=None, device
     return order.pk
 
 
-class OrderError(LazyLocaleException):
-    def __init__(self, *args):
-        msg = args[0]
-        msgargs = args[1] if len(args) > 1 else None
-        self.args = args
-        if msgargs:
-            msg = _(msg) % msgargs
-        else:
-            msg = _(msg)
-        super().__init__(msg)
-
-
 def _check_date(event: Event, now_dt: datetime):
     if event.presale_start and now_dt < event.presale_start:
         raise OrderError(error_messages['not_started'])
@@ -570,7 +603,6 @@ def _check_date(event: Event, now_dt: datetime):
 def _check_positions(event: Event, now_dt: datetime, positions: List[CartPosition], address: InvoiceAddress=None,
                      sales_channel='web', customer=None):
     err = None
-    errargs = None
     _check_date(event, now_dt)
 
     products_seen = Counter()
@@ -607,9 +639,10 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
 
         products_seen[cp.item] += 1
         if cp.item.max_per_order and products_seen[cp.item] > cp.item.max_per_order:
-            err = error_messages['max_items_per_product']
+            err = error_messages['max_items_per_product'] % {
-            errargs = {'max': cp.item.max_per_order,
+                'max': cp.item.max_per_order,
-                       'product': cp.item.name}
+                'product': cp.item.name
+            }
             delete(cp)
             break
 
@@ -728,7 +761,7 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
 
     for voucher, cnt in v_usages.items():
         if 0 < cnt < voucher.min_usages_remaining:
-            raise OrderError(error_messages['voucher_min_usages'], {
+            raise OrderError(error_messages['voucher_min_usages'] % {
                 'voucher': voucher.code,
                 'number': voucher.min_usages_remaining,
             })
@@ -791,7 +824,7 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
         cp.save()
 
     if err:
-        raise OrderError(err, errargs)
+        raise OrderError(err)
 
 
 def _get_fees(positions: List[CartPosition], payment_requests: List[dict], address: InvoiceAddress,
@@ -1344,22 +1377,26 @@ def notify_user_changed_order(order, user=None, auth=None, invoices=[]):
 
 class OrderChangeManager:
     error_messages = {
-        'product_without_variation': _('You need to select a variation of the product.'),
+        'product_without_variation': gettext_lazy('You need to select a variation of the product.'),
-        'quota': _('The quota {name} does not have enough capacity left to perform the operation.'),
+        'quota': gettext_lazy('The quota {name} does not have enough capacity left to perform the operation.'),
-        'quota_missing': _('There is no quota defined that allows this operation.'),
+        'quota_missing': gettext_lazy('There is no quota defined that allows this operation.'),
-        'product_invalid': _('The selected product is not active or has no price set.'),
+        'product_invalid': gettext_lazy('The selected product is not active or has no price set.'),
-        'complete_cancel': _('This operation would leave the order empty. Please cancel the order itself instead.'),
+        'complete_cancel': gettext_lazy('This operation would leave the order empty. Please cancel the order itself instead.'),
-        'paid_to_free_exceeded': _('This operation would make the order free and therefore immediately paid, however '
+        'paid_to_free_exceeded': gettext_lazy(
-                                   'no quota is available.'),
+            'This operation would make the order free and therefore immediately paid, however '
-        'addon_to_required': _('This is an add-on product, please select the base position it should be added to.'),
+            'no quota is available.'
-        'addon_invalid': _('The selected base position does not allow you to add this product as an add-on.'),
+        ),
-        'subevent_required': _('You need to choose a subevent for the new position.'),
+        'addon_to_required': gettext_lazy('This is an add-on product, please select the base position it should be added to.'),
-        'seat_unavailable': _('The selected seat "{seat}" is not available.'),
+        'addon_invalid': gettext_lazy('The selected base position does not allow you to add this product as an add-on.'),
-        'seat_subevent_mismatch': _('You selected seat "{seat}" for a date that does not match the selected ticket date. Please choose a seat again.'),
+        'subevent_required': gettext_lazy('You need to choose a subevent for the new position.'),
-        'seat_required': _('The selected product requires you to select a seat.'),
+        'seat_unavailable': gettext_lazy('The selected seat "{seat}" is not available.'),
-        'seat_forbidden': _('The selected product does not allow to select a seat.'),
+        'seat_subevent_mismatch': gettext_lazy(
-        'tax_rule_country_blocked': _('The selected country is blocked by your tax rule.'),
+            'You selected seat "{seat}" for a date that does not match the selected ticket date. Please choose a seat again.'
-        'gift_card_change': _('You cannot change the price of a position that has been used to issue a gift card.'),
+        ),
+        'seat_required': gettext_lazy('The selected product requires you to select a seat.'),
+        'seat_forbidden': gettext_lazy('The selected product does not allow to select a seat.'),
+        'tax_rule_country_blocked': gettext_lazy('The selected country is blocked by your tax rule.'),
+        'gift_card_change': gettext_lazy('You cannot change the price of a position that has been used to issue a gift card.'),
     }
     ItemOperation = namedtuple('ItemOperation', ('position', 'item', 'variation'))
     SubeventOperation = namedtuple('SubeventOperation', ('position', 'subevent'))
@@ -1766,22 +1803,16 @@ class OrderChangeManager:
                 for (i, v), c in selected.items():
                     n_per_i[i] += c
                 if sum(selected.values()) > iao.max_count:
-                    # TODO: Proper i18n
-                    # TODO: Proper pluralization
                     raise OrderError(
-                        error_messages['addon_max_count'],
+                        error_messages['addon_max_count'] % {
-                        {
                             'base': str(item.name),
                             'max': iao.max_count,
                             'cat': str(iao.addon_category.name),
                         }
                     )
                 elif sum(selected.values()) < iao.min_count:
-                    # TODO: Proper i18n
-                    # TODO: Proper pluralization
                     raise OrderError(
-                        error_messages['addon_min_count'],
+                        error_messages['addon_min_count'] % {
-                        {
                             'base': str(item.name),
                             'min': iao.min_count,
                             'cat': str(iao.addon_category.name),
@@ -1789,8 +1820,7 @@ class OrderChangeManager:
                     )
                 elif any(v > 1 for v in n_per_i.values()) and not iao.multi_allowed:
                     raise OrderError(
-                        error_messages['addon_no_multi'],
+                        error_messages['addon_no_multi'] % {
-                        {
                             'base': str(item.name),
                             'cat': str(iao.addon_category.name),
                         }
@@ -2471,7 +2501,7 @@ def perform_order(self, event: Event, payments: List[dict], positions: List[str]
             except LockTimeoutException:
                 self.retry()
         except (MaxRetriesExceededError, LockTimeoutException):
-            raise OrderError(str(error_messages['busy']))
+            raise OrderError(error_messages['busy'])
 
 
 _unset = object()

src/pretix/base/settings.py

@@ -1308,6 +1308,25 @@ DEFAULTS = {
                         "the email. Does not affect orders performed through other sales channels."),
         )
     },
+    'low_availability_percentage': {
+        'default': None,
+        'type': int,
+        'serializer_class': serializers.IntegerField,
+        'form_class': forms.IntegerField,
+        'serializer_kwargs': dict(
+            min_value=0,
+            max_value=100,
+        ),
+        'form_kwargs': dict(
+            label=_('Low availability threshold'),
+            help_text=_('If the availability of tickets falls below this percentage, the event (or a date, if it is an '
+                        'event series) will be highlighted to have low availability in the event list or calendar. If '
+                        'you keep this option empty, low availability will not be shown publicly.'),
+            min_value=0,
+            max_value=100,
+            required=False
+        )
+    },
     'event_list_availability': {
         'default': 'True',
         'type': bool,

src/pretix/control/forms/event.py

@@ -507,6 +507,7 @@ class EventSettingsForm(SettingsForm):
         'meta_noindex',
         'redirect_to_checkout_directly',
         'frontpage_subevent_ordering',
+        'low_availability_percentage',
         'event_list_type',
         'event_list_available_only',
         'frontpage_text',

src/pretix/control/templates/pretixcontrol/event/settings.html

@@ -314,7 +314,8 @@
                 {% if sform.event_list_available_only %}
                     {% bootstrap_field sform.event_list_available_only layout="control" %}
                 {% endif %}
-                
+                {% bootstrap_field sform.low_availability_percentage layout="control" %}
+
                 {% url "control:organizer.edit" organizer=request.organizer.slug as org_url %}
                 {% propagated request.event org_url "meta_noindex" %}
                     {% bootstrap_field sform.meta_noindex layout="control" %}

src/pretix/control/views/event.py

@@ -42,6 +42,7 @@ from itertools import groupby
 from urllib.parse import urlsplit
 
 import bleach
+from django.apps import apps
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.contenttypes.models import ContentType
@@ -1025,9 +1026,27 @@ class EventDelete(RecentAuthenticationRequiredMixin, EventPermissionRequiredMixi
                 self.request.event.delete()
             messages.success(self.request, _('The event has been deleted.'))
             return redirect(self.get_success_url())
-        except ProtectedError:
+        except ProtectedError as e:
-            messages.error(self.request, _('The event could not be deleted as some constraints (e.g. data created by '
+            err = gettext('The event could not be deleted as some constraints (e.g. data created by plug-ins) do not allow it.')
-                                           'plug-ins) do not allow it.'))
+
+            app_labels = set()
+            for e in e.protected_objects:
+                app_labels.add(type(e)._meta.app_label)
+
+            plugin_names = []
+            for app_label in app_labels:
+                app = apps.get_app_config(app_label)
+                if hasattr(app, 'PretixPluginMeta'):
+                    plugin_names.append(str(app.PretixPluginMeta.name))
+                else:
+                    plugin_names.append(str(app.verbose_name))
+
+            if plugin_names:
+                err += ' ' + gettext(
+                    'Specifically, the following plugins still contain data depends on this event: {plugin_names}'
+                ).format(plugin_names=', '.join(plugin_names))
+
+            messages.error(self.request, err)
             return self.get(self.request, *self.args, **self.kwargs)
 
     def get_success_url(self) -> str:

src/pretix/control/views/main.py

@@ -280,7 +280,9 @@ class EventWizard(SafeSessionWizardView):
                 elif event.organizer.settings.event_team_provisioning:
                     t = Team.objects.create(
                         organizer=event.organizer,
-                        name=_('Team {event}').format(event=str(event.name)[:188] + "…" if len(str(event.name)) > 190 else str(event.name)),
+                        name=_('Team {event}').format(
+                            event=str(event.name)[:100] + "…" if len(str(event.name)) > 100 else str(event.name)
+                        ),
                         can_change_event_settings=True, can_change_items=True,
                         can_view_orders=True, can_change_orders=True, can_view_vouchers=True,
                         can_change_vouchers=True

src/pretix/control/views/organizer.py

@@ -393,9 +393,23 @@ class OrganizerDelete(AdministratorPermissionRequiredMixin, FormView):
                 self.request.organizer.delete()
             messages.success(self.request, _('The organizer has been deleted.'))
             return redirect(self.get_success_url())
-        except ProtectedError:
+        except ProtectedError as e:
-            messages.error(self.request, _('The organizer could not be deleted as some constraints (e.g. data created by '
+            err = gettext('The organizer could not be deleted as some constraints (e.g. data created by plug-ins) do not allow it.')
-                                           'plug-ins) do not allow it.'))
+
+            # Unlike deleting events (which is done by regular backend users), this feature can only be used by sysadmins,
+            # so we expose more technical / less polished information.
+            affected_models = set()
+            for m in e.protected_objects:
+                affected_models.add(type(m)._meta.label)
+
+            if affected_models:
+                err += ' ' + gettext(
+                    'The following database models still contain data that cannot be deleted automatically: {affected_models}'
+                ).format(
+                    affected_models=', '.join(list(affected_models))
+                )
+
+            messages.error(self.request, err)
             return self.get(self.request, *self.args, **self.kwargs)
 
     def get_success_url(self) -> str:

src/pretix/control/views/typeahead.py

@@ -556,7 +556,7 @@ def itemvarquota_select2(request, **kwargs):
 
     if not request.event.has_subevents:
         # We are very unlikely to need pagination
-        itemqs = request.event.items.prefetch_related('variations').filter(name__icontains=i18ncomp(query))
+        itemqs = request.event.items.prefetch_related('variations').filter(Q(name__icontains=i18ncomp(query)) | Q(internal_name__icontains=query))
         quotaqs = request.event.quotas.filter(name__icontains=query)
         more = False
     else:

src/pretix/locale/ar/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-09-15 11:22+0000\n"
 "Last-Translator: Mohamed Tawfiq <mtawfiq@wafyapp.com>\n"
 "Language-Team: Arabic <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/ca/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2020-12-19 07:00+0000\n"
 "Last-Translator: albert <albert.serra.monner@gmail.com>\n"
 "Language-Team: Catalan <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/cs/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2023-01-13 08:00+0000\n"
 "Last-Translator: tree <jan.stransky@arnal.cz>\n"
 "Language-Team: Czech <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/da/LC_MESSAGES/djangojs.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-12-01 17:00+0000\n"
 "Last-Translator: Mie Frydensbjerg <mif@aarhus.dk>\n"
 "Language-Team: Danish <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/de/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-07-26 08:58+0000\n"
 "Last-Translator: Raphael Michel <michel@rami.io>\n"
 "Language-Team: German <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/de/wordlist.txt

@@ -48,6 +48,7 @@ BezahlCode
 Bezahlmethode
 Blackberry
 BLIK
+Blogpost
 BN
 Branding
 Browsereinstellungen
@@ -165,6 +166,7 @@ Linktext
 loszulegen
 Ltd
 max
+MariaDB
 MapQuest
 Mercado
 Merchandise
@@ -206,6 +208,7 @@ Plugin
 Plugins
 POS
 Postfix
+PostgreSQL
 prefix
 pretix
 pretixdesk

src/pretix/locale/de_Informal/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-07-26 08:58+0000\n"
 "Last-Translator: Raphael Michel <michel@rami.io>\n"
 "Language-Team: German (informal) <https://translate.pretix.eu/projects/"

src/pretix/locale/de_Informal/wordlist.txt

@@ -48,6 +48,7 @@ BezahlCode
 Bezahlmethode
 Blackberry
 BLIK
+Blogpost
 BN
 Branding
 Browsereinstellungen
@@ -165,6 +166,7 @@ Linktext
 loszulegen
 Ltd
 max
+MariaDB
 MapQuest
 Mercado
 Merchandise
@@ -206,6 +208,7 @@ Plugin
 Plugins
 POS
 Postfix
+PostgreSQL
 prefix
 pretix
 pretixdesk

src/pretix/locale/djangojs.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"

src/pretix/locale/el/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2019-10-03 19:00+0000\n"
 "Last-Translator: Chris Spy <chrispiropoulou@hotmail.com>\n"
 "Language-Team: Greek <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/es/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-11-25 21:00+0000\n"
 "Last-Translator: Ismael Menéndez Fernández <ismael.menendez@balidea.com>\n"
 "Language-Team: Spanish <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/fi/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-11-10 05:00+0000\n"
 "Last-Translator: Jaakko Rinta-Filppula <jaakko@r-f.fi>\n"
 "Language-Team: Finnish <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/fr/LC_MESSAGES/djangojs.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: French\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2023-01-17 01:00+0000\n"
 "Last-Translator: Maurice Kaag <maurice@kaag.me>\n"
 "Language-Team: French <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/gl/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-02-22 22:00+0000\n"
 "Last-Translator: Ismael Menéndez Fernández <ismael.menendez@balidea.com>\n"
 "Language-Team: Galician <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/he/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-09-24 13:54+0000\n"
 "Last-Translator: ofirtro <ofir.tro@gmail.com>\n"
 "Language-Team: Hebrew <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/hr/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"

src/pretix/locale/hu/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2020-01-24 08:00+0000\n"
 "Last-Translator: Prokaj Miklós <mixolid0@gmail.com>\n"
 "Language-Team: Hungarian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/it/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-05-08 19:00+0000\n"
 "Last-Translator: Emanuele Signoretta <signorettae@gmail.com>\n"
 "Language-Team: Italian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/ja/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-03-15 00:00+0000\n"
 "Last-Translator: Yuriko Matsunami <y.matsunami@enobyte.com>\n"
 "Language-Team: Japanese <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/lv/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-04-06 03:00+0000\n"
 "Last-Translator: Liga V <lerning_by_dreaming@gmx.de>\n"
 "Language-Team: Latvian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/nb_NO/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-06-20 02:00+0000\n"
 "Last-Translator: fyksen <fredrik@fyksen.me>\n"
 "Language-Team: Norwegian Bokmål <https://translate.pretix.eu/projects/pretix/"

src/pretix/locale/nl/LC_MESSAGES/djangojs.po

@@ -6,7 +6,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 1\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-10-29 02:00+0000\n"
 "Last-Translator: Maarten van den Berg <maartenberg1@gmail.com>\n"
 "Language-Team: Dutch <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/nl_BE/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"

src/pretix/locale/nl_Informal/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-08-05 04:00+0000\n"
 "Last-Translator: Maarten van den Berg <maartenberg1@gmail.com>\n"
 "Language-Team: Dutch (informal) <https://translate.pretix.eu/projects/pretix/"

src/pretix/locale/pl/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2019-09-24 19:00+0000\n"
 "Last-Translator: Serge Bazanski <q3k@hackerspace.pl>\n"
 "Language-Team: Polish <https://translate.pretix.eu/projects/pretix/pretix-js/"

src/pretix/locale/pl_Informal/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"

src/pretix/locale/pt/LC_MESSAGES/djangojs.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"

src/pretix/locale/pt_BR/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2019-03-19 09:00+0000\n"
 "Last-Translator: Vitor Reis <vitor.reis7@gmail.com>\n"
 "Language-Team: Portuguese (Brazil) <https://translate.pretix.eu/projects/"

src/pretix/locale/pt_PT/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-11-16 16:12+0000\n"
 "Last-Translator: David Vaz <davidmgvaz@gmail.com>\n"
 "Language-Team: Portuguese (Portugal) <https://translate.pretix.eu/projects/"

src/pretix/locale/ro/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-04-29 04:00+0000\n"
 "Last-Translator: Edd28 <chitu_edy@yahoo.com>\n"
 "Language-Team: Romanian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/ru/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-08-09 13:10+0000\n"
 "Last-Translator: Svyatoslav <slava@digitalarthouse.eu>\n"
 "Language-Team: Russian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/si/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"

src/pretix/locale/sl/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2019-08-27 08:00+0000\n"
 "Last-Translator: Bostjan Marusic <bostjan@brokenbones.si>\n"
 "Language-Team: Slovenian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/sv/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-03-03 07:00+0000\n"
 "Last-Translator: MaLund13 <mart.lund13@gmail.com>\n"
 "Language-Team: Swedish <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/tr/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2018-09-03 06:36+0000\n"
 "Last-Translator: Yunus Fırat Pişkin <firat.piskin@idvlabs.com>\n"
 "Language-Team: Turkish <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/uk/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2022-05-10 02:00+0000\n"
 "Last-Translator: Iryna N <in380@nyu.edu>\n"
 "Language-Team: Ukrainian <https://translate.pretix.eu/projects/pretix/pretix-"

src/pretix/locale/vi/LC_MESSAGES/djangojs.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"

src/pretix/locale/wordlist.txt

@@ -70,6 +70,7 @@ Lead
 Leaflet
 LLC
 MapQuest
+MariaDB
 Mercado
 MOTO
 Multibanco
@@ -90,6 +91,7 @@ percentual
 personalization
 POS
 postfix
+PostgreSQL
 prepended
 presale
 pretix

src/pretix/locale/zh_Hans/LC_MESSAGES/djangojs.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-01-30 11:33+0000\n"
+"POT-Creation-Date: 2023-02-01 13:31+0000\n"
 "PO-Revision-Date: 2021-12-03 08:37+0000\n"
 "Last-Translator: ExtremeX-BB <qq754163444@gmail.com>\n"
 "Language-Team: Chinese (Simplified) <https://translate.pretix.eu/projects/"

src/pretix/plugins/banktransfer/api.py

@@ -100,7 +100,7 @@ class BankImportJobViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
 
         if BankImportJob.objects.filter(Q(organizer=request.organizer)).filter(
             state=BankImportJob.STATE_RUNNING,
-            created__lte=now() - timedelta(minutes=30)  # safety timeout
+            created__gte=now() - timedelta(minutes=30)  # safety timeout
         ).exists():
             return Response({'error': ['A job is currently running.']}, status=status.HTTP_409_CONFLICT)
 

src/pretix/plugins/checkinlists/exporters.py

@@ -521,9 +521,9 @@ class CSVCheckinList(CheckInListMixin, ListExporter):
             row += [
                 str(op.item) + (" – " + str(op.variation.value) if op.variation else ""),
                 op.price,
-                date_format(last_checked_in.astimezone(self.event.timezone), 'SHORT_DATETIME_FORMAT')
+                last_checked_in.astimezone(self.event.timezone).strftime('%Y-%m-%d %H:%M')
                 if last_checked_in else '',
-                date_format(last_checked_out.astimezone(self.event.timezone), 'SHORT_DATETIME_FORMAT')
+                last_checked_out.astimezone(self.event.timezone).strftime('%Y-%m-%d %H:%M')
                 if last_checked_out else '',
                 _('Yes') if op.auto_checked_in else _('No'),
             ]
@@ -535,10 +535,10 @@ class CSVCheckinList(CheckInListMixin, ListExporter):
             row.append(str(op.order.phone) if op.order.phone else '')
             if self.event.has_subevents:
                 row.append(str(op.subevent.name))
-                row.append(date_format(op.subevent.date_from.astimezone(self.event.timezone), 'SHORT_DATETIME_FORMAT'))
+                row.append(op.subevent.date_from.astimezone(self.event.timezone).strftime('%Y-%m-%d %H:%M'))
                 if op.subevent.date_to:
                     row.append(
-                        date_format(op.subevent.date_to.astimezone(self.event.timezone), 'SHORT_DATETIME_FORMAT')
+                        op.subevent.date_to.astimezone(self.event.timezone).strftime('%Y-%m-%d %H:%M')
                     )
                 else:
                     row.append('')

src/pretix/presale/checkoutflow.py

@@ -631,35 +631,30 @@ class AddOnsStep(CartMixin, AsyncAction, TemplateFlowStep):
                     selected[i, None] = val, price
 
         if sum(a[0] for a in selected.values()) > category['max_count']:
-            # TODO: Proper pluralization
             raise ValidationError(
-                _(error_messages['addon_max_count']),
+                error_messages['addon_max_count'] % {
-                'addon_max_count',
-                {
                     'base': str(form['item'].name),
                     'max': category['max_count'],
                     'cat': str(category['category'].name),
-                }
+                },
+                'addon_max_count'
             )
         elif sum(a[0] for a in selected.values()) < category['min_count']:
-            # TODO: Proper pluralization
             raise ValidationError(
-                _(error_messages['addon_min_count']),
+                error_messages['addon_min_count'] % {
-                'addon_min_count',
-                {
                     'base': str(form['item'].name),
                     'min': category['min_count'],
                     'cat': str(category['category'].name),
-                }
+                },
+                'addon_min_count',
             )
         elif any(sum(v[0] for k, v in selected.items() if k[0] == i) > 1 for i in category['items']) and not category['multi_allowed']:
             raise ValidationError(
-                _(error_messages['addon_no_multi']),
+                error_messages['addon_no_multi'] % {
-                'addon_no_multi',
-                {
                     'base': str(form['item'].name),
                     'cat': str(category['category'].name),
-                }
+                },
+                'addon_no_multi',
             )
         try:
             validate_cart_addons.send(

src/pretix/presale/templates/pretixpresale/event/fragment_subevent_list.html

@@ -21,11 +21,15 @@
             <div class="col-md-2 text-right flip">
                 {% if subev.presale_is_running and event.settings.event_list_availability %}
                     {% if subev.best_availability_state == 100 %}
-                        <span class="label label-success">{% trans "Book now" %}</span>
+                        {% if subev.best_availability_is_low %}
+                            <span class="label label-success-warning">{% trans "Few tickets left" %}</span>
+                        {% else %}
+                            <span class="label label-success">{% trans "Book now" %}</span>
+                        {% endif %}
                     {% elif event.settings.waiting_list_enabled and subev.best_availability_state >= 0 %}
                         <span class="label label-warning">{% trans "Waiting list" %}</span>
                     {% elif subev.best_availability_state == 20 %}
-                        <span class="label label-warning">{% trans "Reserved" %}</span>
+                        <span class="label label-danger">{% trans "Reserved" %}</span>
                     {% elif subev.best_availability_state < 20 %}
                         {% if subev.has_paid_item %}
                             <span class="label label-danger">{% trans "Sold out" %}</span>

src/pretix/presale/templates/pretixpresale/fragment_calendar.html

@@ -27,7 +27,7 @@
                                     <li><a class="event {% if event.continued %}continued{% endif %} {% spaceless %}
     {% if event.event.presale_is_running and show_avail %}
         {% if event.event.best_availability_state == 100 %}
-            available
+            available {% if event.event.best_availability_is_low %} low {% endif %}
         {% elif event.event.settings.waiting_list_enabled and event.event.best_availability_state >= 0 %}
             waitinglist
         {% elif event.event.best_availability_state == 20 %}
@@ -68,7 +68,11 @@
                                             <span class="event-status">
                                                 {% if event.event.presale_is_running and show_avail %}
                                                     {% if event.event.best_availability_state == 100 %}
-                                                        <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Book now" %}
+                                                        {% if event.event.best_availability_is_low %}
+                                                            <span class="fa fa-exclamation-circle" aria-hidden="true"></span> {% trans "Few tickets left" %}
+                                                        {% else %}
+                                                            <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Book now" %}
+                                                        {% endif %}
                                                     {% elif event.event.settings.waiting_list_enabled and event.event.best_availability_state >= 0 %}
                                                         <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Waiting list" %}
                                                     {% elif event.event.best_availability_state == 20 %}

src/pretix/presale/templates/pretixpresale/fragment_day_calendar.html

@@ -40,7 +40,7 @@
                 <a class="event {% if event.continued %}continued{% endif %} {% spaceless %}
     {% if event.event.presale_is_running and show_avail %}
         {% if event.event.best_availability_state == 100 %}
-            available
+            available {% if event.event.best_availability_is_low %} low {% endif %}
         {% elif event.event.settings.waiting_list_enabled and event.event.best_availability_state >= 0 %}
             waitinglist
         {% elif event.event.best_availability_state == 20 %}
@@ -89,12 +89,16 @@
                         <span class="event-status">
                             {% if event.event.presale_is_running and show_avail %}
                                 {% if event.event.best_availability_state == 100 %}
-                                    <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Book now" %}
+                                    {% if event.event.best_availability_is_low %}
-                                    {% elif event.event.settings.waiting_list_enabled and event.event.best_availability_state >= 0 %}
+                                        <span class="fa fa-exclamation-circle" aria-hidden="true"></span> {% trans "Few tickets left" %}
+                                    {% else %}
+                                        <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Book now" %}
+                                    {% endif %}
+                                {% elif event.event.settings.waiting_list_enabled and event.event.best_availability_state >= 0 %}
                                     <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Waiting list" %}
-                                    {% elif event.event.best_availability_state == 20 %}
+                                {% elif event.event.best_availability_state == 20 %}
                                     <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Reserved" %}
-                                    {% elif event.event.best_availability_state < 20 %}
+                                {% elif event.event.best_availability_state < 20 %}
                                     {% if event.event.has_paid_item %}
                                         <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Sold out" %}
                                     {% else %}
@@ -104,9 +108,9 @@
                                 {% endif %}
                             {% elif event.event.presale_is_running %}
                                 <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Book now" %}
-                                {% elif event.event.presale_has_ended %}
+                            {% elif event.event.presale_has_ended %}
                                 <span class="fa fa-ticket" aria-hidden="true"></span> {% trans "Sale over" %}
-                                {% elif event.event.settings.presale_start_show_date and event.event.presale_start %}
+                            {% elif event.event.settings.presale_start_show_date and event.event.presale_start %}
                                 <span class="fa fa-ticket" aria-hidden="true"></span>
                                 {% blocktrans with start_date=event.event.presale_start|date:"SHORT_DATE_FORMAT" %}
                                     from {{ start_date }}