Bump to 3.11.1

Currently translated at 100.0% (3756 of 3756 strings)

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

powered by weblate

.github/workflows/docs.yml

@@ -0,0 +1,42 @@
+name: Documentation
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - 'src/pretix/locale/**'
+      - 'src/pretix/static/**'
+      - 'src/tests/**'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - 'src/pretix/locale/**'
+      - 'src/pretix/static/**'
+      - 'src/tests/**'
+
+jobs:
+  spelling:
+    name: Spellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install system packages
+        run: sudo apt update && sudo apt install enchant hunspell aspell-en
+      - name: Install Dependencies
+        run: pip3 install --no-use-pep517 -Ur doc/requirements.txt
+      - name: Spellcheck docs
+        run: make spelling
+        working-directory: ./doc
+      - name:
+        run: '[ ! -s _build/spelling/output.txt ]'
+        working-directory: ./doc

.github/workflows/strings.yml

@@ -0,0 +1,62 @@
+name: Strings
+
+on:
+  push:
+    branches: [ master ]
+    paths:
+      - 'doc/**'
+      - 'src/pretix/locale/**'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'doc/**'
+      - 'src/pretix/locale/**'
+
+jobs:
+  compile:
+    runs-on: ubuntu-latest
+    name: Check gettext syntax
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install system packages
+        run: sudo apt update && sudo apt install gettext
+      - name: Install Dependencies
+        run: pip3 install --no-use-pep517 -Ur src/requirements.txt
+      - name: Compile messages
+        run: python manage.py compilemessages
+        working-directory: ./src
+      - name: Compile jsi18n
+        run: python manage.py compilejsi18n
+        working-directory: ./src
+  spelling:
+    runs-on: ubuntu-latest
+    name: Spellcheck
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install system packages
+        run: sudo apt update && sudo apt install enchant hunspell hunspell-de-de aspell-en aspell-de
+      - name: Install Dependencies
+        run: pip3 install --no-use-pep517 -Ur src/requirements/dev.txt
+      - name: Spellcheck translations
+        run: potypo
+        working-directory: ./src

.github/workflows/style.yml

@@ -0,0 +1,55 @@
+name: Code Style
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - 'src/pretix/locale/**'
+      - 'src/pretix/static/**'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - 'src/pretix/locale/**'
+      - 'src/pretix/static/**'
+
+jobs:
+  isort:
+    name: isort
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install Dependencies
+        run: pip3 install --no-use-pep517 -Ur src/requirements/dev.txt
+      - name: Run isort
+        run: isort -c .
+        working-directory: ./src
+  flake:
+    name: flake8
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v1
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install Dependencies
+        run: pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt
+      - name: Run flake8
+        run: flake8 .
+        working-directory: ./src

.github/workflows/tests.yml

@@ -0,0 +1,75 @@
+name: Tests
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - 'doc/**'
+      - 'src/pretix/locale/**'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - 'doc/**'
+      - 'src/pretix/locale/**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Tests
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8]
+        database: [sqlite, postgres, mysql]
+        exclude:
+          - database: mysql
+            python-version: 3.7
+          - database: sqlite
+            python-version: 3.7
+          - database: mysql
+            python-version: 3.6
+          - database: sqlite
+            python-version: 3.6
+    steps:
+      - uses: actions/checkout@v2
+      - uses: getong/mariadb-action@v1.1
+        with:
+          mariadb version: '10.4'
+          mysql database: 'pretix'
+          mysql root password: ''
+        if: matrix.database == 'mysql'
+      - uses: harmon758/postgresql-action@v1
+        with:
+          postgresql version: '11'
+          postgresql db: 'pretix'
+          postgresql user: 'postgres'
+          postgresql password: 'postgres'
+        if: matrix.database == 'postgres'
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install system dependencies
+        run: sudo apt update && sudo apt install gettext mysql-client
+      - name: Install Python dependencies
+        run: pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt mysqlclient psycopg2-binary
+      - name: Run checks
+        run: python manage.py check
+        working-directory: ./src
+      - name: Compile
+        working-directory: ./src
+        run: make all compress
+      - name: Run tests
+        working-directory: ./src
+        run: PRETIX_CONFIG_FILE=tests/travis_${{ matrix.database }}.cfg py.test -n 3 -p no:sugar --cov=./ --cov-report=xml --reruns 3 tests --maxfail=100
+      - name: Upload coverage
+        uses: codecov/codecov-action@v1
+        with:
+          file: src/coverage.xml
+          fail_ci_if_error: true
+        if: matrix.database == 'postgres' && matrix.python-version == '3.8'

.gitlab-ci.yml

@@ -5,7 +5,11 @@ tests:
         - virtualenv env
         - source env/bin/activate
         - pip install -U pip wheel setuptools
-        - XDG_CACHE_HOME=/cache bash .travis.sh tests
+        - XDG_CACHE_HOME=/cache pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt
+        - cd src
+        - python manage.py check
+        - make all compress
+        - py.test --reruns 3 -n 3 tests
     tags:
         - python3
     except:
@@ -16,15 +20,17 @@ pypi:
         - cp /keys/.pypirc ~/.pypirc
         - virtualenv env
         - source env/bin/activate
-        - pip install -U pip wheel setuptools
+        - pip install -U pip wheel setuptools check-manifest twine
         - XDG_CACHE_HOME=/cache pip3 install -Ur src/requirements.txt -r src/requirements/dev.txt
         - cd src
         - python setup.py sdist
         - pip install dist/pretix-*.tar.gz
         - python -m pretix migrate
         - python -m pretix check
-        - python setup.py sdist upload
-        - python setup.py bdist_wheel upload
+        - check-manifest
+        - python setup.py sdist bdist_wheel
+        - twine check dist/*
+        - twine upload dist/*
     tags:
         - python3
     only:

.travis.sh

@@ -1,68 +0,0 @@
-#!/bin/bash
-set -e
-set -x
-
-echo "Executing job $1"
-
-if [ "$PRETIX_CONFIG_FILE" == "tests/travis_mysql.cfg" ]; then
-    mysql -u root -e 'CREATE DATABASE pretix DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;'
-    pip3 install -Ur src/requirements/mysql.txt
-fi
-
-if [ "$PRETIX_CONFIG_FILE" == "tests/travis_postgres.cfg" ]; then
-    psql -c 'create database travis_ci_test;' -U postgres
-fi
-
-if [ "$1" == "style" ]; then
-	XDG_CACHE_HOME=/cache pip3 install --no-use-pep517 -Ur src/requirements.txt -r src/requirements/dev.txt
-	cd src
-    flake8 .
-    isort -c -rc -df .
-fi
-if [ "$1" == "doctests" ]; then
-	XDG_CACHE_HOME=/cache pip3 install --no-use-pep517 -Ur doc/requirements.txt
-	cd doc
-	make doctest
-fi
-if [ "$1" == "doc-spelling" ]; then
-	XDG_CACHE_HOME=/cache pip3 install --no-use-pep517 -Ur doc/requirements.txt
-	cd doc
-	make spelling
-	if [ -s _build/spelling/output.txt ]; then
-		exit 1
-	fi
-fi
-if [ "$1" == "translation-spelling" ]; then
-	XDG_CACHE_HOME=/cache pip3 install --no-use-pep517 -Ur src/requirements/dev.txt
-	cd src
-	potypo
-fi
-if [ "$1" == "tests" ]; then
-	pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt
-	cd src
-	python manage.py check
-	make all compress
-	py.test --reruns 5 -n 3 tests
-fi
-if [ "$1" == "tests-cov" ]; then
-	pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt
-	cd src
-	python manage.py check
-	make all compress
-	coverage run -m py.test --reruns 5 tests && codecov
-fi
-if [ "$1" == "plugins" ]; then
-	pip3 install -r src/requirements.txt --no-use-pep517 -Ur src/requirements/dev.txt
-	cd src
-	python setup.py develop
-	make all compress
-
-	pushd ~
-    git clone --depth 1 https://github.com/pretix/pretix-cartshare.git
-    cd pretix-cartshare
-    python setup.py develop
-    make
-	py.test --reruns 5 tests
-    popd
-
-fi

.travis.yml

@@ -1,45 +0,0 @@
-language: python
-dist: xenial
-sudo: false
-install:
-  - pip install -U pip wheel setuptools
-script:
-  - bash .travis.sh $JOB
-cache:
-  directories:
-    - $HOME/.cache/pip
-services:
-  - mysql
-  - postgresql
-matrix:
-  include:
-    - python: 3.7
-      env: JOB=tests PRETIX_CONFIG_FILE=tests/travis_sqlite.cfg
-    - python: 3.7
-      env: JOB=tests-cov PRETIX_CONFIG_FILE=tests/travis_postgres.cfg
-    - python: 3.7
-      env: JOB=style
-    - python: 3.7
-      env: JOB=tests PRETIX_CONFIG_FILE=tests/travis_mysql.cfg
-    - python: 3.7
-      env: JOB=tests PRETIX_CONFIG_FILE=tests/travis_postgres.cfg
-    - python: 3.5
-      env: JOB=tests PRETIX_CONFIG_FILE=tests/travis_postgres.cfg
-    - python: 3.7
-      env: JOB=doc-spelling
-    - python: 3.7
-      env: JOB=translation-spelling
-addons:
-  postgresql: "9.4"
-  mariadb: '10.3'
-  apt:
-      packages:
-          - enchant
-          - myspell-de-de
-          - aspell-en
-          - sqlite3
-  sources:
-    - travis-ci/sqlite3
-branches:
-  except:
-  - /^weblate-.*/

Dockerfile

@@ -29,7 +29,7 @@ RUN apt-get update && \
     mkdir /etc/pretix && \
     mkdir /data && \
     useradd -ms /bin/bash -d /pretix -u 15371 pretixuser && \
-    echo 'pretixuser ALL=(ALL) NOPASSWD: /usr/bin/supervisord' >> /etc/sudoers && \
+    echo 'pretixuser ALL=(ALL) NOPASSWD:SETENV: /usr/bin/supervisord' >> /etc/sudoers && \
     mkdir /static
 
 ENV LC_ALL=C.UTF-8 \

README.rst

@@ -4,11 +4,10 @@ pretix
 .. image:: https://img.shields.io/pypi/v/pretix.svg
    :target: https://pypi.python.org/pypi/pretix
 
-.. image:: https://readthedocs.org/projects/pretix/badge/?version=latest
+.. image:: https://github.com/pretix/pretix/workflows/Documentation/badge.svg
    :target: https://docs.pretix.eu/en/latest/
 
-.. image:: https://travis-ci.org/pretix/pretix.svg?branch=master
-   :target: https://travis-ci.org/pretix/pretix
+.. image:: https://github.com/pretix/pretix/workflows/Tests/badge.svg
 
 .. image:: https://codecov.io/gh/pretix/pretix/branch/master/graph/badge.svg
    :target: https://codecov.io/gh/pretix/pretix
@@ -20,9 +19,8 @@ Reinventing ticket presales, one ticket at a time.
 Project status & release cycle
 ------------------------------
 
-While there is always a lot to do and improve on, pretix by now has been in use for more than a dozen
-conferences that sold over ten thousand tickets combined without major problems. We therefore think of
-pretix as being stable and ready to use.
+While there is always a lot to do and improve on, pretix by now has been in use for thousands of events
+conferences that sold millions of tickets combined. We therefore think of pretix as being stable and ready to use.
 
 If you want to use or extend pretix, we strongly recommend to follow our `blog`_. We will announce all
 releases there. You can always find the latest stable version on PyPI or in the ``release/X.Y`` branch of
@@ -31,9 +29,13 @@ the sense that it does not break your data,  but its APIs might change without p
 
 To get started using pretix on your own server, look at the `installation guide`_ in our documentation.
 
-This project is 100 percent free and open source software. If you are interested in commercial support,
-hosting services or supporting this project financially, please go to `pretix.eu`_ or contact us at
-support@pretix.eu.
+Support
+-------
+
+This project is 100 percent free and open source software. You are welcome to ask questions in the GitHub
+repository. Private support via email or phone is only offered to customers of our pretix Hosted or pretix
+Enterprise offerings. If you are interested in commercial support, hosting services or supporting this project
+financially, please go to `pretix.eu`_ or contact us at support@pretix.eu.
 
 Contributing
 ------------
@@ -53,8 +55,8 @@ License
 The code in this repository is published under the terms of the Apache License. 
 See the LICENSE file for the complete license text.
 
-This project is maintained by Raphael Michel <mail@raphaelmichel.de>. See the
-AUTHORS file for a list of all the awesome folks who contributed to this project.
+This project is maintained by Raphael Michel. See the AUTHORS file for a list of all
+the awesome folks who contributed to this project.
 
 .. _installation guide: https://docs.pretix.eu/en/latest/admin/installation/index.html
 .. _developer documentation: https://docs.pretix.eu/en/latest/development/index.html

deployment/docker/pretix.bash

@@ -19,7 +19,7 @@ fi
 python3 -m pretix migrate --noinput
 
 if [ "$1" == "all" ]; then
-    exec sudo /usr/bin/supervisord -n -c /etc/supervisord.conf
+    exec sudo -E /usr/bin/supervisord -n -c /etc/supervisord.conf
 fi
 
 if [ "$1" == "webworker" ]; then

doc/admin/config.rst

@@ -92,9 +92,11 @@ Example::
 
 ``trust_x_forwarded_proto``
     Specifies whether the ``X-Forwarded-Proto`` header can be trusted. Only set to ``on`` if you have a reverse
-    proxy that actively removes and re-adds the header to make sure the correct client IP is the first value.
+    proxy that actively removes and re-adds the header to make sure the correct value is set.
     Defaults to ``off``.
 
+``csp_log``
+    Log violations of the Content Security Policy (CSP). Defaults to ``on``.
 
 Locale settings
 ---------------
@@ -337,6 +339,15 @@ application. If you want to use sentry, you need to set a DSN in the configurati
     You will be given this value by your sentry installation.
 
 
+Caching
+-------
+
+You can adjust some caching settings to control how much storage pretix uses::
+
+    [cache]
+    tickets=48  ; Number of hours tickets (PDF, passbook, …) are cached
+
+
 Secret length
 -------------
 

doc/admin/index.rst

@@ -12,3 +12,4 @@ This documentation is for everyone who wants to install pretix on a server.
    config
    maintainance
    scaling
+   indexes

doc/admin/indexes.rst

@@ -0,0 +1,73 @@
+Additional database indices
+===========================
+
+If you have a large pretix database, some features such as search for orders or events might turn pretty slow.
+For PostgreSQL, we have compiled a list of additional database indexes that you can add to speed things up.
+Just like any index, they in turn make write operations insignificantly slower and cause the database to use
+more disk space.
+
+The indexes aren't automatically created by pretix since Django does not allow us to do so only on PostgreSQL
+(and they won't work on other databases). Also, they're really not necessary if you're not having tens of
+thousands of records in your database.
+
+However, this also means they won't automatically adapt if some of the referred fields change in future updates of pretix
+and you might need to re-check this page and change them manually.
+
+Here is the currently recommended set of commands::
+
+    CREATE EXTENSION pg_trgm;
+
+    CREATE INDEX CONCURRENTLY pretix_addidx_event_slug
+        ON pretixbase_event
+        USING gin (upper("slug") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_event_name
+        ON pretixbase_event
+        USING gin (upper("name") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_order_code
+        ON pretixbase_order
+        USING gin (upper("code") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_voucher_code
+        ON pretixbase_voucher
+        USING gin (upper("code") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_invoice_nu1
+        ON "pretixbase_invoice" (UPPER("invoice_no"));
+    CREATE INDEX CONCURRENTLY pretix_addidx_invoice_nu2
+        ON "pretixbase_invoice" (UPPER("full_invoice_no"));
+    CREATE INDEX CONCURRENTLY pretix_addidx_organizer_name
+        ON pretixbase_organizer
+        USING gin (upper("name") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_organizer_slug
+        ON pretixbase_organizer
+        USING gin (upper("slug") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_order_email
+        ON pretixbase_order
+        USING gin (upper("email") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_order_comment
+        ON pretixbase_order
+        USING gin (upper("comment") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_orderpos_name
+        ON pretixbase_orderposition
+        USING gin (upper("attendee_name_cached") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_orderpos_scret
+        ON pretixbase_orderposition
+        USING gin (upper("secret") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_orderpos_email
+        ON pretixbase_orderposition
+        USING gin (upper("attendee_email") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_ia_name
+        ON pretixbase_invoiceaddress
+        USING gin (upper("name_cached") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_ia_company
+        ON pretixbase_invoiceaddress
+        USING gin (upper("company") gin_trgm_ops);
+
+
+Also, if you use our ``pretix-shipping`` plugin::
+
+    CREATE INDEX CONCURRENTLY pretix_addidx_sa_name
+        ON pretix_shipping_shippingaddress
+        USING gin (upper("name") gin_trgm_ops);
+    CREATE INDEX CONCURRENTLY pretix_addidx_sa_company
+        ON pretix_shipping_shippingaddress
+        USING gin (upper("company") gin_trgm_ops);
+

doc/admin/installation/docker_smallscale.rst

@@ -26,7 +26,7 @@ installation guides):
 * `Docker`_
 * 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`_, `MySQL`_ 5.7+, or MariaDB 10.2.7+ database server
+* A `PostgreSQL`_ 9.5+, `MySQL`_ 5.7+, or MariaDB 10.2.7+ database server
 * A `redis`_ server
 
 We also recommend that you use a firewall, although this is not a pretix-specific recommendation. If you're new to
@@ -182,7 +182,7 @@ named ``/etc/systemd/system/pretix.service`` with the following content::
         -v /var/pretix-data:/data \
         -v /etc/pretix:/etc/pretix \
         -v /var/run/redis:/var/run/redis \
-        --sysctl net.core.somaxconn=4096
+        --sysctl net.core.somaxconn=4096 \
         pretix/standalone:stable all
     ExecStop=/usr/bin/docker stop %n
 
@@ -290,7 +290,7 @@ to re-build your custom image after you pulled ``pretix/standalone`` if you want
 .. _Let's Encrypt: https://letsencrypt.org/
 .. _pretix.eu: https://pretix.eu/
 .. _MySQL: https://dev.mysql.com/doc/refman/5.7/en/linux-installation-apt-repo.html
-.. _PostgreSQL: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-9-4-on-debian-8
+.. _PostgreSQL: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-on-ubuntu-20-04
 .. _redis: https://blog.programster.org/debian-8-install-redis-server/
 .. _ufw: https://en.wikipedia.org/wiki/Uncomplicated_Firewall
 .. _redis website: https://redis.io/topics/security

doc/admin/installation/manual_smallscale.rst

@@ -12,7 +12,7 @@ solution with many things readily set-up, look at :ref:`dockersmallscale`.
              get it right. If you're not feeling comfortable managing a Linux server, check out our hosting and service
              offers at `pretix.eu`_.
 
-We tested this guide on the Linux distribution **Debian 8.0** but it should work very similar on other
+We tested this guide on the Linux distribution **Debian 10.0** but it should work very similar on other
 modern distributions, especially on all systemd-based ones.
 
 Requirements
@@ -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`_, `MySQL`_ 5.7+, or MariaDB 10.2.7+ database server
+* A `PostgreSQL`_ 9.5+, `MySQL`_ 5.7+, or MariaDB 10.2.7+ database server
 * A `redis`_ server
 
 We also recommend that you use a firewall, although this is not a pretix-specific recommendation. If you're new to
@@ -133,7 +133,7 @@ command if you're running MySQL::
 
     (venv)$ pip3 install "pretix[postgres]" gunicorn
 
-Note that you need Python 3.5 or newer. You can find out your Python version using ``python -V``.
+Note that you need Python 3.6 or newer. You can find out your Python version using ``python -V``.
 
 We also need to create a data directory::
 
@@ -308,7 +308,7 @@ example::
 .. _Let's Encrypt: https://letsencrypt.org/
 .. _pretix.eu: https://pretix.eu/
 .. _MySQL: https://dev.mysql.com/doc/refman/5.7/en/linux-installation-apt-repo.html
-.. _PostgreSQL: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-9-4-on-debian-8
+.. _PostgreSQL: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-on-ubuntu-20-04
 .. _redis: https://blog.programster.org/debian-8-install-redis-server/
 .. _ufw: https://en.wikipedia.org/wiki/Uncomplicated_Firewall
 .. _strong encryption settings: https://mozilla.github.io/server-side-tls/ssl-config-generator/

doc/admin/maintainance.rst

@@ -92,7 +92,8 @@ pretix_task_duration_seconds
 
 pretix_model_instances
     Gauge. Measures number of instances of a certain model within the database, labeled with
-    the ``model`` name.
+    the ``model`` name. Starting with pretix 3.11, these numbers might only be approximate for
+    most tables when running on PostgreSQL to mitigate performance impact.
 
 .. _metric types: https://prometheus.io/docs/concepts/metric_types/
 .. _Prometheus: https://prometheus.io/

doc/api/index.rst

@@ -7,9 +7,6 @@ This part of the documentation contains information about the REST-style API
 exposed by pretix since version 1.5 that can be used by third-party programs
 to interact with pretix and its data structures.
 
-Currently, the API provides mostly read-only capabilities, but it will be extended
-in functionality over time.
-
 .. toctree::
    :maxdepth: 2
 

doc/api/resources/checkinlists.rst

@@ -30,6 +30,9 @@ position_count                        integer                    Number of ticke
 checkin_count                         integer                    Number of check-ins performed on this list (read-only).
 include_pending                       boolean                    If ``true``, the check-in list also contains tickets from orders in pending state.
 auto_checkin_sales_channels           list of strings            All items on the check-in list will be automatically marked as checked-in when purchased through any of the listed sales channels.
+allow_multiple_entries                boolean                    If ``true``, subsequent scans of a ticket on this list should not show a warning but instead be stored as an additional check-in.
+allow_entry_after_exit                boolean                    If ``true``, subsequent scans of a ticket on this list are valid if the last scan of the ticket was an exit scan.
+rules                                 object                     Custom check-in logic. The contents of this field are currently not considered a stable API and modifications through the API are highly discouraged.
 ===================================== ========================== =======================================================
 
 .. versionchanged:: 1.10
@@ -48,6 +51,15 @@ auto_checkin_sales_channels           list of strings            All items on th
 
     The ``auto_checkin_sales_channels`` field has been added.
 
+.. versionchanged:: 3.9
+
+    The ``subevent`` attribute may now be ``null`` inside event series. The ``allow_multiple_entries``,
+    ``allow_entry_after_exit``, and ``rules`` attributes have been added.
+
+.. versionchanged:: 3.11
+
+    The ``subevent_match`` and ``exclude`` query parameters have been added.
+
 Endpoints
 ---------
 
@@ -89,6 +101,9 @@ Endpoints
             "limit_products": [],
             "include_pending": false,
             "subevent": null,
+            "allow_multiple_entries": false,
+            "allow_entry_after_exit": true,
+            "rules": {},
             "auto_checkin_sales_channels": [
               "pretixpos"
             ]
@@ -98,6 +113,8 @@ Endpoints
 
    :query integer page: The page number in case of a multi-page result set, default is 1
    :query integer subevent: Only return check-in lists of the sub-event with the given ID
+   :query integer subevent_match: Only return check-in lists that are valid for the sub-event with the given ID (i.e. also lists valid for all subevents)
+   :query string exclude: Exclude a field from the output, e.g. ``checkin_count``. Can be used as a performance optimization. Can be passed multiple times.
    :param organizer: The ``slug`` field of the organizer to fetch
    :param event: The ``slug`` field of the event to fetch
    :statuscode 200: no error
@@ -133,6 +150,9 @@ Endpoints
         "limit_products": [],
         "include_pending": false,
         "subevent": null,
+        "allow_multiple_entries": false,
+        "allow_entry_after_exit": true,
+        "rules": {},
         "auto_checkin_sales_channels": [
           "pretixpos"
         ]
@@ -229,6 +249,8 @@ Endpoints
         "all_products": false,
         "limit_products": [1, 2],
         "subevent": null,
+        "allow_multiple_entries": false,
+        "allow_entry_after_exit": true,
         "auto_checkin_sales_channels": [
           "pretixpos"
         ]
@@ -251,6 +273,8 @@ Endpoints
         "limit_products": [1, 2],
         "include_pending": false,
         "subevent": null,
+        "allow_multiple_entries": false,
+        "allow_entry_after_exit": true,
         "auto_checkin_sales_channels": [
           "pretixpos"
         ]
@@ -303,6 +327,8 @@ Endpoints
         "limit_products": [1, 2],
         "include_pending": false,
         "subevent": null,
+        "allow_multiple_entries": false,
+        "allow_entry_after_exit": true,
         "auto_checkin_sales_channels": [
           "pretixpos"
         ]
@@ -582,6 +608,7 @@ Order position endpoints
    :<json datetime datetime: Specifies the datetime of the check-in. If not supplied, the current time will be used.
    :<json boolean force: Specifies that the check-in should succeed regardless of previous check-ins or required
                          questions that have not been filled. Defaults to ``false``.
+   :<json string type: Send ``"exit"`` for an exit and ``"entry"`` (default) for an entry.
    :<json boolean ignore_unpaid: Specifies that the check-in should succeed even if the order is in pending state.
                                  Defaults to ``false`` and only works when ``include_pending`` is set on the check-in
                                  list.
@@ -696,6 +723,7 @@ Order position endpoints
      ``canceled_supported`` to ``true``, otherwise these orders return ``unpaid``.
    * ``already_redeemed`` - Ticket already has been redeemed
    * ``product`` - Tickets with this product may not be scanned at this device
+   * ``rules`` - Check-in prevented by a user-defined rule
 
    :param organizer: The ``slug`` field of the organizer to fetch
    :param event: The ``slug`` field of the event to fetch

doc/api/resources/events.rst

@@ -526,7 +526,7 @@ information about the properties.
 
    Get current values of event settings.
 
-   Permission required: "Can change event settings"
+   Permission required: "Can change event settings" (Exception: with device auth, *some* settings can always be *read*.)
 
    **Example request**:
 

doc/api/resources/giftcards.rst

@@ -18,6 +18,8 @@ secret                                string                     Gift card code
 value                                 money (string)             Current gift card value
 currency                              string                     Currency of the value (can not be modified later)
 testmode                              boolean                    Whether this is a test gift card
+expires                               datetime                   Expiry date (or ``null``)
+conditions                            string                     Special terms and conditions for this card (or ``null``)
 ===================================== ========================== =======================================================
 
 Endpoints
@@ -53,6 +55,8 @@ Endpoints
             "secret": "HLBYVELFRC77NCQY",
             "currency": "EUR",
             "testmode": false,
+            "expires": null,
+            "conditions": null,
             "value": "13.37"
           }
         ]
@@ -92,6 +96,8 @@ Endpoints
         "secret": "HLBYVELFRC77NCQY",
         "currency": "EUR",
         "testmode": false,
+        "expires": null,
+        "conditions": null,
         "value": "13.37"
       }
 
@@ -134,6 +140,8 @@ Endpoints
         "secret": "HLBYVELFRC77NCQY",
         "testmode": false,
         "currency": "EUR",
+        "expires": null,
+        "conditions": null,
         "value": "13.37"
       }
 
@@ -180,6 +188,8 @@ Endpoints
         "secret": "HLBYVELFRC77NCQY",
         "testmode": false,
         "currency": "EUR",
+        "expires": null,
+        "conditions": null,
         "value": "14.00"
       }
 
@@ -222,6 +232,8 @@ Endpoints
         "secret": "HLBYVELFRC77NCQY",
         "currency": "EUR",
         "testmode": false,
+        "expires": null,
+        "conditions": null,
         "value": "15.37"
       }
 

doc/api/resources/item_add-ons.rst

@@ -24,6 +24,7 @@ addon_category                        integer                    Internal ID of
 min_count                             integer                    The minimal number of add-ons that need to be chosen.
 max_count                             integer                    The maximal number of add-ons that can be chosen.
 position                              integer                    An integer, used for sorting
+multi_allowed                         boolean                    Adding the same item multiple times is allowed
 price_included                        boolean                    Adding this add-on to the item is free
 ===================================== ========================== =======================================================
 
@@ -65,6 +66,7 @@ Endpoints
             "min_count": 0,
             "max_count": 10,
             "position": 0,
+            "multi_allowed": false,
             "price_included": true
           },
           {
@@ -73,6 +75,7 @@ Endpoints
             "min_count": 0,
             "max_count": 10,
             "position": 1,
+            "multi_allowed": false,
             "price_included": true
           }
         ]
@@ -112,6 +115,7 @@ Endpoints
         "min_count": 0,
         "max_count": 10,
         "position": 1,
+        "multi_allowed": false,
         "price_included": true
       }
 
@@ -141,6 +145,7 @@ Endpoints
         "min_count": 0,
         "max_count": 10,
         "position": 1,
+        "multi_allowed": false,
         "price_included": true
       }
 
@@ -158,6 +163,7 @@ Endpoints
         "min_count": 0,
         "max_count": 10,
         "position": 1,
+        "multi_allowed": false,
         "price_included": true
       }
 
@@ -206,6 +212,7 @@ Endpoints
         "min_count": 0,
         "max_count": 10,
         "position": 1,
+        "multi_allowed": false,
         "price_included": true
       }
 

doc/api/resources/items.rst

@@ -104,6 +104,7 @@ addons                                list of objects            Definition of a
 ├ min_count                           integer                    The minimal number of add-ons that need to be chosen.
 ├ max_count                           integer                    The maximal number of add-ons that can be chosen.
 ├ position                            integer                    An integer, used for sorting
+├ multi_allowed                       boolean                    Adding the same item multiple times is allowed
 └ price_included                      boolean                    Adding this add-on to the item is free
 bundles                               list of objects            Definition of bundles that are included in this item.
                                                                  Only writable during creation,
@@ -159,6 +160,10 @@ meta_data                             object                     Values set for
 
    The attribute ``meta_data`` has been added.
 
+.. versionchanged:: 3.10
+
+   The attribute ``multi_allowed`` has been added to ``addons``.
+
 Notes
 -----
 

doc/api/resources/orders.rst

@@ -151,6 +151,18 @@ last_modified                         datetime                   Last modificati
 
    The ``order.fees.canceled`` attribute has been added.
 
+.. versionchanged:: 3.8
+
+   The ``reactivate`` operation has been added.
+
+.. versionchanged:: 3.10
+
+   The ``search`` query parameter has been added.
+
+.. versionchanged:: 3.11
+
+   The ``exclude`` and ``subevent_after`` query parameter has been added.
+
 
 .. _order-position-resource:
 
@@ -173,6 +185,13 @@ price                                 money (string)             Price of this p
 attendee_name                         string                     Specified attendee name for this position (or ``null``)
 attendee_name_parts                   object of strings          Decomposition of attendee name (i.e. given name, family name)
 attendee_email                        string                     Specified attendee email address for this position (or ``null``)
+company                               string                     Attendee company name (or ``null``)
+street                                string                     Attendee street (or ``null``)
+zipcode                               string                     Attendee ZIP code (or ``null``)
+city                                  string                     Attendee city (or ``null``)
+country                               string                     Attendee country code (or ``null``)
+state                                 string                     Attendee state (ISO 3166-2 code). Only supported in
+                                                                 AU, BR, CA, CN, MY, MX, and US, otherwise ``null``.
 voucher                               integer                    Internal ID of the voucher used for this position (or ``null``)
 tax_rate                              decimal (string)           VAT rate applied for this position
 tax_value                             money (string)             VAT included in this position
@@ -184,6 +203,7 @@ pseudonymization_id                   string                     A random ID, e.
 checkins                              list of objects            List of check-ins with this ticket
 ├ list                                integer                    Internal ID of the check-in list
 ├ datetime                            datetime                   Time of check-in
+├ type                                string                     Type of scan (defaults to ``entry``)
 └ auto_checked_in                     boolean                    Indicates if this check-in been performed automatically by the system
 downloads                             list of objects            List of ticket download options
 ├ output                              string                     Ticket output provider (e.g. ``pdf``, ``passbook``)
@@ -236,6 +256,14 @@ pdf_data                              object                     Data object req
 
   The attribute ``canceled`` has been added.
 
+.. versionchanged:: 3.8
+
+  The attributes ``company``, ``street``, ``zipcode``, ``city``, ``country``, and ``state`` have been added.
+
+.. versionchanged:: 3.9
+
+  The ``checkin.type`` attribute has been added.
+
 .. _order-payment-resource:
 
 Order payment resource
@@ -380,6 +408,12 @@ List of all orders
                   "full_name": "Peter",
                 },
                 "attendee_email": null,
+                "company": "Sample company",
+                "street": "Test street 12",
+                "zipcode": "12345",
+                "city": "Testington",
+                "country": "DE",
+                "state": null,
                 "voucher": null,
                 "tax_rate": "0.00",
                 "tax_value": "0.00",
@@ -392,6 +426,7 @@ List of all orders
                 "checkins": [
                   {
                     "list": 44,
+                    "type": "entry",
                     "datetime": "2017-12-25T12:45:23Z",
                     "auto_checked_in": false
                   }
@@ -441,6 +476,7 @@ List of all orders
                            ``last_modified``, and ``status``. Default: ``datetime``
    :query string code: Only return orders that match the given order code
    :query string status: Only return orders in the given order status (see above)
+   :query string search: Only return orders matching a given search query
    :query boolean testmode: Only return orders with ``testmode`` set to ``true`` or ``false``
    :query boolean require_approval: If set to ``true`` or ``false``, only categories with this value for the field
                                     ``require_approval`` will be returned.
@@ -453,6 +489,8 @@ List of all orders
        recommend using this in combination with ``testmode=false``, since test mode orders can vanish at any time and
        you will not notice it using this method.
    :query datetime created_since: Only return orders that have been created since the given date.
+   :query datetime subevent_after: Only return orders that contain a ticket for a subevent taking place after the given date.
+   :query string exclude: Exclude a field from the output, e.g. ``fees`` or ``positions.downloads``. Can be used as a performance optimization. Can be passed multiple times.
    :param organizer: The ``slug`` field of the organizer to fetch
    :param event: The ``slug`` field of the event to fetch
    :resheader X-Page-Generated: The server time at the beginning of the operation. If you're using this API to fetch
@@ -536,6 +574,12 @@ Fetching individual orders
               "full_name": "Peter",
             },
             "attendee_email": null,
+            "company": "Sample company",
+            "street": "Test street 12",
+            "zipcode": "12345",
+            "city": "Testington",
+            "country": "DE",
+            "state": null,
             "voucher": null,
             "tax_rate": "0.00",
             "tax_rule": null,
@@ -548,6 +592,7 @@ Fetching individual orders
             "checkins": [
               {
                 "list": 44,
+                "type": "entry",
                 "datetime": "2017-12-25T12:45:23Z",
                 "auto_checked_in": false
               }
@@ -816,9 +861,9 @@ Creating orders
    * ``consume_carts`` (optional) – A list of cart IDs. All cart positions with these IDs will be deleted if the
      order creation is successful. Any quotas or seats that become free by this operation will be credited to your order
      creation.
-   * ``email``
+   * ``email`` (optional)
    * ``locale``
-   * ``sales_channel``
+   * ``sales_channel`` (optional)
    * ``payment_provider`` (optional) – The identifier of the payment provider set for this order. This needs to be an
      existing payment provider. You should use ``"free"`` for free orders, and we strongly advise to use ``"manual"``
      for all orders you create as paid. This field is optional when the order status is ``"n"`` or the order total is
@@ -851,15 +896,21 @@ Creating orders
 
       * ``positionid`` (optional, see below)
       * ``item``
-      * ``variation``
+      * ``variation`` (optional)
       * ``price`` (optional, if set to ``null`` or missing the price will be computed from the given product)
       * ``seat`` (The ``seat_guid`` attribute of a seat. Required when the specified ``item`` requires a seat, otherwise must be ``null``.)
-      * ``attendee_name`` **or** ``attendee_name_parts``
+      * ``attendee_name`` **or** ``attendee_name_parts`` (optional)
       * ``voucher`` (optional, the ``code`` attribute of a valid voucher)
-      * ``attendee_email``
+      * ``attendee_email`` (optional)
+      * ``company`` (optional)
+      * ``street`` (optional)
+      * ``zipcode`` (optional)
+      * ``city`` (optional)
+      * ``country`` (optional)
+      * ``state`` (optional)
       * ``secret`` (optional)
       * ``addon_to`` (optional, see below)
-      * ``subevent``
+      * ``subevent`` (optional)
       * ``answers``
 
         * ``question``
@@ -883,7 +934,8 @@ Creating orders
         during order generation and is not respected automatically when the order changes later.)
 
    * ``force`` (optional). If set to ``true``, quotas will be ignored.
-   * ``send_mail`` (optional). If set to ``true``, the same emails will be sent as for a regular order. Defaults to
+   * ``send_mail`` (optional). If set to ``true``, the same emails will be sent as for a regular order, regardless of
+     whether these emails are enabled for certain sales channels. Defaults to
      ``false``.
 
    If you want to use add-on products, you need to set the ``positionid`` fields of all positions manually
@@ -1057,6 +1109,42 @@ Order state operations
    :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
    :statuscode 404: The requested order does not exist.
 
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/reactivate/
+
+   Reactivates a canceled order. This will set the order to pending or paid state. Only possible if all products are
+   still available.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/orders/ABC12/reactivate/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "code": "ABC12",
+        "status": "n",
+        ...
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param code: The ``code`` field of the order to modify
+   :statuscode 200: no error
+   :statuscode 400: The order cannot be reactivated
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested order does not exist.
+
 .. http:post:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/mark_pending/
 
    Marks a paid order as unpaid.
@@ -1402,6 +1490,7 @@ List of all order positions
             "checkins": [
               {
                 "list": 44,
+                "type": "entry",
                 "datetime": "2017-12-25T12:45:23Z",
                 "auto_checked_in": false
               }
@@ -1507,6 +1596,7 @@ Fetching individual positions
         "checkins": [
           {
             "list": 44,
+            "type": "entry",
             "datetime": "2017-12-25T12:45:23Z",
             "auto_checked_in": false
           }

doc/api/resources/quotas.rst

@@ -26,6 +26,8 @@ close_when_sold_out                   boolean                    If ``true``, th
                                                                  again.
 closed                                boolean                    Whether the quota is currently closed (see above
                                                                  field).
+release_after_exit                    boolean                    Whether the quota regains capacity as soon as some tickets
+                                                                 have been scanned at an exit.
 ===================================== ========================== =======================================================
 
 .. versionchanged:: 1.10
@@ -36,6 +38,10 @@ closed                                boolean                    Whether the quo
 
    The attributes ``close_when_sold_out`` and ``closed`` have been added.
 
+.. versionchanged:: 3.10
+
+   The attribute ``release_after_exit`` has been added.
+
 
 Endpoints
 ---------
@@ -283,6 +289,7 @@ Endpoints
         "total_size": 1000,
         "pending_orders": 25,
         "paid_orders": 423,
+        "exited_orders": 0,
         "cart_positions": 7,
         "blocking_vouchers": 126,
         "waiting_list": 0

doc/api/resources/subevents.rst

@@ -39,10 +39,12 @@ geo_lon                               float                      Longitude of th
 item_price_overrides                  list of objects            List of items for which this sub-event overrides the
                                                                  default price
 ├ item                                integer                    The internal item ID
+├ disabled                            boolean                    If ``true``, item should not be available for this sub-event
 └ price                               money (string)             The price or ``null`` for the default price
 variation_price_overrides             list of objects            List of variations for which this sub-event overrides
                                                                  the default price
 ├ variation                           integer                    The internal variation ID
+├ disabled                            boolean                    If ``true``, variation should not be available for this sub-event
 └ price                               money (string)             The price or ``null`` for the default price
 meta_data                             object                     Values set for organizer-specific meta data parameters.
 seating_plan                          integer                    If reserved seating is in use, the ID of a seating
@@ -74,6 +76,10 @@ seat_category_mapping                 object                     An object mappi
 
    The attributes ``geo_lat`` and ``geo_lon`` have been added.
 
+.. versionchanged:: 3.10
+
+   The ``disabled`` attribute has been added to ``item_price_overrides`` and ``variation_price_overrides``.
+
 Endpoints
 ---------
 
@@ -125,6 +131,7 @@ Endpoints
             "item_price_overrides": [
               {
                 "item": 2,
+                "disabled": false,
                 "price": "12.00"
               }
             ],
@@ -182,6 +189,7 @@ Endpoints
         "item_price_overrides": [
           {
             "item": 2,
+            "disabled": false,
             "price": "12.00"
           }
         ],
@@ -216,6 +224,7 @@ Endpoints
         "item_price_overrides": [
           {
             "item": 2,
+            "disabled": false,
             "price": "12.00"
           }
         ],
@@ -271,6 +280,7 @@ Endpoints
         "item_price_overrides": [
           {
             "item": 2,
+            "disabled": false,
             "price": "12.00"
           }
         ],
@@ -307,6 +317,7 @@ Endpoints
         "item_price_overrides": [
           {
             "item": 2,
+            "disabled": false,
             "price": "23.42"
           }
         ],
@@ -339,6 +350,7 @@ Endpoints
         "item_price_overrides": [
           {
             "item": 2,
+            "disabled": false,
             "price": "23.42"
           }
         ],
@@ -427,6 +439,7 @@ Endpoints
             "item_price_overrides": [
               {
                 "item": 2,
+                "disabled": false,
                 "price": "12.00"
               }
             ],

doc/api/webhooks.rst

@@ -70,6 +70,9 @@ and ``checkin_list``.
              only include the minimum amount of data necessary for you to fetch the changed objects from our
              :ref:`rest-api` in an authenticated way.
 
+.. warning:: In very rare cases, you could receive the same webhook notification twice. We try to avoid it, but we
+             prefer it over missing a notification.
+
 If you want to further prevent others from accessing your webhook URL, you can also use `Basic authentication`_ and
 supply the URL to us in the format of ``https://username:password@domain.com/path/``.
 We recommend that you use HTTPS for your webhook URL and might require it in the future. If HTTPS is used, we require

doc/development/api/customview.rst

@@ -66,7 +66,7 @@ event-related views, there is also a signal that allows you to add the view to t
 
     from django.urls import resolve, reverse
     from django.dispatch import receiver
-    from django.utils.translation import ugettext_lazy as _
+    from django.utils.translation import gettext_lazy as _
     from pretix.control.signals import nav_event
 
 

doc/development/api/exporter.rst

@@ -29,6 +29,22 @@ that we'll provide in this plugin::
         from .exporter import MyExporter
         return MyExporter
 
+Some exporters might also prove to be useful, when provided on an organizer-level. In order to declare your
+exporter as capable of providing exports spanning multiple events, your plugin should listen for this signal
+and return the subclass of ``pretix.base.exporter.BaseExporter`` that we'll provide in this plugin::
+
+    from django.dispatch import receiver
+
+    from pretix.base.signals import register_multievent_data_exporters
+
+
+    @receiver(register_multievent_data_exporters, dispatch_uid="multieventexporter_myexporter")
+    def register_multievent_data_exporter(sender, **kwargs):
+        from .exporter import MyExporter
+        return MyExporter
+
+If your exporter supports both event-level and multi-event level exports, you will need to listen for both
+signals.
 
 The exporter class
 ------------------

doc/development/api/general.rst

@@ -20,7 +20,7 @@ Order events
 There are multiple signals that will be sent out in the ordering cycle:
 
 .. automodule:: pretix.base.signals
-   :members: validate_cart, validate_cart_addons, validate_order, order_fee_calculation, order_paid, order_placed, order_canceled, order_expired, order_modified, order_changed, order_approved, order_denied, order_fee_type_name, allow_ticket_download, order_split, order_gracefully_delete, invoice_line_text
+   :members: validate_cart, validate_cart_addons, validate_order, order_fee_calculation, order_paid, order_placed, order_canceled, order_reactivated, order_expired, order_modified, order_changed, order_approved, order_denied, order_fee_type_name, allow_ticket_download, order_split, order_gracefully_delete, invoice_line_text
 
 Check-ins
 """""""""
@@ -33,11 +33,11 @@ Frontend
 --------
 
 .. automodule:: pretix.presale.signals
-   :members: html_head, html_footer, footer_link, front_page_top, front_page_bottom, front_page_bottom_widget, fee_calculation_for_cart, contact_form_fields, question_form_fields, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, sass_preamble, sass_postamble, render_seating_plan, checkout_flow_steps, position_info, item_description
+   :members: html_head, html_footer, footer_link, front_page_top, front_page_bottom, front_page_bottom_widget, fee_calculation_for_cart, contact_form_fields, question_form_fields, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, sass_preamble, sass_postamble, render_seating_plan, checkout_flow_steps, position_info, position_info_top, item_description, global_html_head, global_html_footer, global_html_page_header
 
 
 .. automodule:: pretix.presale.signals
-   :members: order_info, order_meta_from_request
+   :members: order_info, order_info_top, order_meta_from_request
 
 Request flow
 """"""""""""
@@ -66,19 +66,13 @@ Vouchers
 """"""""
 
 .. automodule:: pretix.control.signals
-   :members: item_forms
-
-Vouchers
-""""""""
-
-.. automodule:: pretix.control.signals
-   :members: voucher_form_class, voucher_form_html, voucher_form_validation
+   :members: item_forms, voucher_form_class, voucher_form_html, voucher_form_validation
 
 Dashboards
 """"""""""
 
 .. automodule:: pretix.control.signals
-   :members: event_dashboard_widgets, user_dashboard_widgets
+   :members: event_dashboard_widgets, user_dashboard_widgets, event_dashboard_top
 
 Ticket designs
 """"""""""""""

doc/development/api/payment.rst

@@ -126,6 +126,8 @@ The provider class
 
    .. autoattribute:: test_mode_message
 
+   .. autoattribute:: requires_invoice_immediately
+
 
 Additional views
 ----------------

doc/development/api/plugins.rst

@@ -61,7 +61,7 @@ A working example would be::
         from pretix.base.plugins import PluginConfig
     except ImportError:
         raise RuntimeError("Please use pretix 2.7 or above to run this plugin!")
-    from django.utils.translation import ugettext_lazy as _
+    from django.utils.translation import gettext_lazy as _
 
 
     class PaypalApp(PluginConfig):

doc/development/api/ticketoutput.rst

@@ -72,6 +72,10 @@ The output class
 
    .. autoattribute:: download_button_icon
 
+   .. autoattribute:: multi_download_button_text
+
+   .. autoattribute:: long_download_button_text
+
    .. autoattribute:: preview_allowed
 
    .. autoattribute:: javascript_required

doc/development/contribution/style.rst

@@ -7,7 +7,7 @@ Coding style and quality
   for more information. Use four spaces for indentation.
 
 * We sort our imports by a certain schema, but you don't have to do this by hand. Again, ``setup.cfg`` contains
-  some definitions that allow the command ``isort -rc <directory>`` to automatically sort the imports in your source
+  some definitions that allow the command ``isort <directory>`` to automatically sort the imports in your source
   files.
 
 * For templates and models, please take a look at the `Django Coding Style`_. We like Django's `class-based views`_ and
@@ -18,7 +18,7 @@ Coding style and quality
 * We expect all new code to come with proper tests. When writing new tests, please write them using `pytest-style`_
   test functions and raw ``assert`` statements. Use `fixtures`_ to prevent repetitive code. Some old parts of pretix'
   test suite are in the style of Python's unit test module. If you extend those files, you might continue in this style,
-  but please use pytest style for any new test files.
+  but please use ``pytest`` style for any new test files.
 
 * Please keep the first line of your commit messages short. When referencing an issue, please phrase it like
   ``Fix #123 -- Problems with order creation`` or ``Refs #123 -- Fix this part of that bug``.

doc/development/implementation/logging.rst

@@ -69,7 +69,7 @@ We now need a way to translate the action codes like ``pretix.event.changed`` in
 strings. The :py:attr:`pretix.base.signals.logentry_display` signals allows you to do so. A simple
 implementation could look like::
 
-    from django.utils.translation import ugettext as _
+    from django.utils.translation import gettext as _
     from pretix.base.signals import logentry_display
 
     @receiver(signal=logentry_display)

doc/development/setup.rst

@@ -98,7 +98,7 @@ pull request nevertheless and ask us for help, we are happy to assist you.
 Execute the following commands to check for code style errors::
 
     flake8 .
-    isort -c -rc .
+    isort -c .
     python manage.py check
 
 Execute the following command to run pretix' test suite (might take a couple of minutes)::
@@ -121,7 +121,7 @@ for example, to check for any errors in any staged files when committing::
     do
       echo $file
       git show ":$file" | flake8 - --stdin-display-name="$file" || exit 1 # we only want to lint the staged changes, not any un-staged changes
-      git show ":$file" | isort -df --check-only - | grep ERROR && exit 1 || true
+      git show ":$file" | isort -c - | grep ERROR && exit 1 || true
     done
 
 

doc/plugins/digital.rst

@@ -0,0 +1,356 @@
+Digital content
+===============
+
+URL interpolation and JWT authentication
+----------------------------------------
+
+In the simplest case, you can use the digital content module to point users to a specific piece of content on some
+platform after their ticket purchase, or show them an embedded video or live stream. However, the full power of the
+module can be utilized by passing additional information to the target system to automatically authenticate the user
+or pre-fill some fields with their data. For example, you could use an URL like this::
+
+    https://webinars.example.com/join?as={attendee_name}&userid={order_code}-{positionid}
+
+While this is already useful, it does not provide much security – anyone could guess a valid combination for that URL.
+Therefore, the module allows you to pass information as a `JSON Web Token`_, which isn't encrypted, but signed with a
+shared secret such that nobody can create their own tokens or modify the contents. To use a token, set up a URL like this::
+
+    https://webinars.example.com/join?with_token={token}
+
+Additionally, you will need to set a JWT secret and a token template, either through the pretix interface or through the
+API (see below). pretix currently only supports tokens signed with ``HMAC-SHA256`` (``HS256``). Your token template can contain
+whatever JSON you'd like to pass on based on the same variables, for example::
+
+    {
+        "iss": "pretix.eu",
+        "aud": "webinars.example.com",
+        "user": {
+            "id": "{order_code}-{positionid}",
+            "product": "{product_id}",
+            "variation": "{variation_id}",
+            "name": "{attendee_name}"
+        }
+    }
+
+Variables can only be used in strings inside the JSON structure.
+pretix will automatically add an ``iat`` claim with the current timestamp and an ``exp`` claim with an expiration timestamp
+based on your configuration.
+
+
+List of variables
+"""""""""""""""""
+
+The following variables are currently supported:
+
+.. rst-class:: rest-resource-table
+
+=================================== ====================================================================
+Variable                            Description
+=================================== ====================================================================
+``order_code``                      Order code (alphanumerical, unique per order, not per ticket)
+``positionid``                      ID of the ticket within the order (integer, starting at 1)
+``order_email``                     E-mail address of the ticket purchaser
+``product_id``                      Internal ID of the purchased product
+``product_variation``               Internal ID of the purchased product variation (or empty)
+``attendee_name``                   Full name of the ticket holder (or empty)
+``attendee_name_*``                 Name parts of the ticket holder, depending on configuration, e.g. ``attendee_name_given_name`` or ``attendee_name_family_name``
+``attendee_email``                  E-mail address of the ticket holder (or empty)
+``attendee_company``                Company of the ticket holder (or empty)
+``attendee_street``                 Street of the ticket holder's address (or empty)
+``attendee_zipcode``                ZIP code of the ticket holder's address (or empty)
+``attendee_city``                   City of the ticket holder's address (or empty)
+``attendee_country``                Country code of the ticket holder's address (or empty)
+``attendee_state``                  State of the ticket holder's address (or empty)
+``answer[XYZ]``                     Answer to the custom question with identifier ``XYZ``
+``invoice_name``                    Full name of the invoice address (or empty)
+``invoice_name_*``                  Name parts of the invoice address, depending on configuration, e.g. ``invoice_name_given_name`` or ``invoice_name_family_name``
+``invoice_company``                 Company of the invoice address (or empty)
+``invoice_street``                  Street of the invoice address (or empty)
+``invoice_zipcode``                 ZIP code of the invoice address (or empty)
+``invoice_city``                    City of the invoice address (or empty)
+``invoice_country``                 Country code of the invoice address (or empty)
+``invoice_state``                   State of the invoice address (or empty)
+``meta_XYZ``                        Value of the event's ``XYZ`` meta property
+``token``                           Signed JWT (only to be used in URLs, not in tokens)
+=================================== ====================================================================
+
+
+API Resource description
+-------------------------
+
+The digital content plugin provides a HTTP API that allows you to create new digital content for your ticket holders,
+such as live streams, videos, or material downloads.
+
+The digital content resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal content ID
+title                                 multi-lingual string       The content title (required)
+content_type                          string                     The type of content, valid values are ``webinar``, ``video``, ``livestream``, ``link``, ``file``
+url                                   string                     The location of the digital content
+description                           multi-lingual string       A public description of the item. May contain Markdown
+                                                                 syntax and is not required.
+available_from                        datetime                   The first date time at which this content will be shown
+                                                                 (or ``null``).
+available_until                       datetime                   The last date time at which this content will b e shown
+                                                                 (or ``null``).
+all_products                          boolean                    If ``true``, the content is available to all buyers of tickets for this event. The ``limit_products`` field is ignored in this case.
+limit_products                        list of integers           List of product/item IDs. This content is only shown to buyers of these ticket types.
+position                              integer                    An integer, used for sorting
+subevent                              integer                    Date in an event series this content should be shown for. Should be ``null`` if this is not an event series or if this should be shown to all customers.
+jwt_template                          string                     Template for JWT token generation
+jwt_secret                            string                     Secret for JWT token generation
+jwt_validity                          integer                    JWT validity in days
+===================================== ========================== =======================================================
+
+API Endpoints
+-------------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/digitalcontents/
+
+   Returns a list of all digital content configured for an event.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/digitalcontents/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "subevent": null,
+            "title": {
+                "en": "Concert livestream"
+            },
+            "content_type": "link",
+            "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
+            "description": {
+                "en": "Watch our event live here on YouTube!"
+            },
+            "all_products": true,
+            "limit_products": [],
+            "available_from": "2020-03-22T23:00:00Z",
+            "available_until": null,
+            "position": 1
+          }
+        ]
+      }
+
+   :query page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of the event to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to view it.
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/digitalcontents/(id)/
+
+   Returns information on one content item, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/digitalcontents/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "subevent": null,
+        "title": {
+            "en": "Concert livestream"
+        },
+        "content_type": "link",
+        "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
+        "description": {
+            "en": "Watch our event live here on YouTube!"
+        },
+        "all_products": true,
+        "limit_products": [],
+        "available_from": "2020-03-22T23:00:00Z",
+        "available_until": null,
+        "position": 1
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param id: The ``id`` field of the content to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/content does not exist **or** you have no permission to view it.
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/digitalcontents/
+
+   Create a new digital content.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/digitalcontents/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 166
+
+      {
+        "subevent": null,
+        "title": {
+            "en": "Concert livestream"
+        },
+        "content_type": "link",
+        "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
+        "description": {
+            "en": "Watch our event live here on YouTube!"
+        },
+        "all_products": true,
+        "limit_products": [],
+        "available_from": "2020-03-22T23:00:00Z",
+        "available_until": null,
+        "position": 1
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 2,
+        "subevent": null,
+        "title": {
+            "en": "Concert livestream"
+        },
+        "content_type": "link",
+        "url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
+        "description": {
+            "en": "Watch our event live here on YouTube!"
+        },
+        "all_products": true,
+        "limit_products": [],
+        "available_from": "2020-03-22T23:00:00Z",
+        "available_until": null,
+        "position": 1
+      }
+
+   :param organizer: The ``slug`` field of the organizer to create new content for
+   :param event: The ``slug`` field of the event to create new content for
+   :statuscode 201: no error
+   :statuscode 400: The content could not be created due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to create digital contents.
+
+
+.. http:patch:: /api/v1/organizers/(organizer)/events/(event)/digitalcontents/(id)/
+
+   Update a content. You can also use ``PUT`` instead of ``PATCH``. With ``PUT``, you have to provide all fields of
+   the resource, other fields will be reset to default. With ``PATCH``, you only need to provide the fields that you
+   want to change.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/events/sampleconf/digitalcontents/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 34
+
+      {
+        "url": "https://mywebsite.com"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: text/javascript
+
+      {
+        "id": 2,
+        "subevent": null,
+        "title": {
+            "en": "Concert livestream"
+        },
+        "content_type": "link",
+        "url": "https://mywebsite.com",
+        "description": {
+            "en": "Watch our event live here on YouTube!"
+        },
+        "all_products": true,
+        "limit_products": [],
+        "available_from": "2020-03-22T23:00:00Z",
+        "available_until": null,
+        "position": 1
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the content to modify
+   :statuscode 200: no error
+   :statuscode 400: The content could not be modified due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/content does not exist **or** you have no permission to change it.
+
+
+.. http:delete:: /api/v1/organizers/(organizer)/events/(event)/digitalcontents/(id)/
+
+   Delete a digital content.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/events/sampleconf/digitalcontents/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+      Vary: Accept
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the content to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/content does not exist **or** you have no permission to change it
+
+.. _JSON Web Token: https://en.wikipedia.org/wiki/JSON_Web_Token

doc/plugins/index.rst

@@ -15,3 +15,5 @@ If you want to **create** a plugin, please go to the
    ticketoutputpdf
    badges
    campaigns
+   digital
+   webinar

doc/plugins/webinar.rst

@@ -0,0 +1,43 @@
+pretix Webinar
+==============
+
+Fetch host URLs
+---------------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/webinars/
+
+   Returns a list of all currently available webinar calls configured for an event.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/webinars/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      [
+        {
+          "name": "Webinar B – Sept. 8th, 2020",
+          "hosturl": "http://pretix.eu/demo/museum/webinar/host/a9aded3d7bd4df60/30611a34f9fee5d3/"
+        },
+        {
+          "name": "Webinar A – Sept. 8, 2020",
+          "hosturl": "http://pretix.eu/demo/museum/webinar/host/e714x7d4a4a36a04/b9cc444665xxx757/"
+        }
+      ]
+
+   :query subevent: Limit the result to the webinar(s) for a specific subevent.
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of the event to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to view it.

doc/spelling_wordlist.txt

@@ -47,6 +47,7 @@ gunicorn
 guid
 hardcoded
 hostname
+ics
 idempotency
 iframe
 incrementing
@@ -54,6 +55,8 @@ inofficial
 invalidations
 iterable
 Jimdo
+jwt
+JWT
 libpretixprint
 libsass
 linters

doc/user/events/email.rst

@@ -26,6 +26,9 @@ Sender address
     we strongly recommend to use the SMTP settings below as well, otherwise your e-mails might be detected as spam
     due to the `Sender Policy Framework`_ and similar mechanisms.
 
+Sender name
+    This is the name associated with the sender address. By default, this is your event name.
+
 Signature
     This text will be appended to all e-mails in form of a signature. This might be useful e.g. to add your contact
     details or any legal information that needs to be included with the e-mails.
@@ -33,6 +36,15 @@ Signature
 Bcc address
     This email address will receive a copy of every event-related email.
 
+Attach calendar files
+    With this option, every order confirmation mail will include an ics file with name, date and location of
+    your event. It can be imported into many digital calendars.
+
+Sales Channels for Checkout Emails
+    When you are using multiple sales channel, you may want to decide that mails for order and payment confirmation
+    are only to be sent for some sales channels. For orders created through the default online shop, these emails
+    must always be send. A similar option is available for ticket download reminders.
+
 E-mail design
 -------------
 

doc/user/events/guides/timeslots.rst

@@ -0,0 +1,94 @@
+.. _timeslots:
+
+Use case: Time slots
+====================
+
+A more advanced use case of pretix is using pretix for time-slot-based access to an area with a limited visitor
+capacity, such as a museum or other attraction. This guide will show you the quickest way to set up such an event
+with pretix.
+
+First of all, when creating your event, you need to select that your event represents an "event series":
+
+
+.. thumbnail:: ../../../screens/event/create_step1.png
+   :align: center
+   :class: screenshot
+
+You can click :ref:`here <subevents>` for a more general description of event series with pretix, but everything you
+need to know is in this chapter as well.
+
+General event setup
+-------------------
+
+Before you go further, set up your products that you want to sell for each time slot, such as different types of entry.
+
+Creating slots
+--------------
+
+To create the time slots, you need to create a number of "dates" in the event series. Select "Dates" in the navigation
+menu on the left side and click "Create many new dates". Then, first enter the pattern of your opening days. In the
+example, the museum is open week Tuesday to Sunday. We recommend to create the slots for a few weeks at a time, but not
+e.g. for a full year, since it will be more complicated to change things later.
+
+.. thumbnail:: ../../../screens/event/timeslots_create.png
+   :align: center
+   :class: screenshot
+
+Then, scroll to the times section and create your time slots. You can do any interval you like. If you have different
+opening times on different week days, you will need to go through the creation process multiple times.
+
+.. thumbnail:: ../../../screens/event/timeslots_create_2.png
+   :align: center
+   :class: screenshot
+
+Scroll further down and create one or multiple quotas that define how many people can book a ticket for that time slot.
+In this example, 50 people in total are allowed to enter within every slot:
+
+.. thumbnail:: ../../../screens/event/timeslots_create_3.png
+   :align: center
+   :class: screenshot
+
+Do **not** create a check-in list at this point. We will deal with this further below in the guide.
+Now, press "Save" to create your slots.
+
+.. warning:: If you create a lot of time slots at once, the server might need a few minutes to create them all in our
+             system. If you receive an error page because it took too long, please do not try again immediately but wait
+             for a few minutes. Most likely, the slots will be created successfully even though you saw an error.
+
+Event settings
+--------------
+
+We recommend that you navigate to "Settings" > "General" > "Display" and set the settings "Default overview style"
+to "Week calendar":
+
+.. thumbnail:: ../../../screens/event/timeslots_settings_1.png
+   :align: center
+   :class: screenshot
+
+Now, your ticket shop should give users a nice weekly overview over all time slots and their availability:
+
+.. thumbnail:: ../../../screens/event/timeslots_presale.png
+   :align: center
+   :class: screenshot
+
+Check-in
+--------
+
+If you want to scan people at the entrance of your event and only admit them at their designated time, we recommend
+the following setup: Go to "Check-in" in the main navigation on the left and create a new check-in list. Give it a name
+and do *not* choose a specific data. We will use one check-in list for all dates. Then, go to the "Advanced" tab at
+the top and set up two restrictions to make sure people can only get in during the time slot they registered for.
+You can create the rules exactly like shown in the following screenshot:
+
+.. thumbnail:: ../../../screens/event/timeslots_checkinlists.png
+   :align: center
+   :class: screenshot
+
+If you want, you can enter a tolerance of e.g. "10" if you want to be a little bit more relaxed and admit people up to
+10 minutes before or after their time slot.
+
+Now, download our `Android or Desktop app`_ and register it to your account. The app will ask you to select one the
+time slots, but it does not matter, you can select any one of them and then select your newly created check-in list.
+That's it, you're good to go!
+
+.. _Android or Desktop app: https://pretix.eu/about/en/scan

doc/user/events/structureguide.rst

@@ -292,6 +292,8 @@ Flexible group sizes
 
 If you want to give out discounted tickets to groups starting at a given size, but still billed per person, you can do so by creating a special **Group ticket** at the per-person price and set the **Minimum amount per order** option of the ticket to the minimal group size.
 
+For more complex use cases, you can also use add-on products that can be chosen multiple times.
+
 This way, your ticket can be bought an arbitrary number of times – but no less than the given minimal amount per order.
 
 Fixed group sizes
@@ -344,3 +346,13 @@ In addition to your normal conference quota, you need to create an unlimited quo
 Then, head to the **Bundled products** tab of the "conference ticket" and add the "conference food" as a bundled product with a **designated price** of € 150.
 
 Once a customer tries to buy the € 450 conference ticket, a sub-product will be added and the price will automatically be split into the two components, leading to a correct computation of taxes.
+
+You can find more use cases in these specialized guides:
+
+More use cases
+--------------
+
+.. toctree::
+   :maxdepth: 1
+
+   guides/timeslots

doc/user/events/widget.rst

@@ -136,10 +136,15 @@ If you want to include all your public events, you can just reference your organ
 
    <pretix-widget event="https://pretix.eu/demo/"></pretix-widget>
 
-There is an optional ``style`` parameter that let's you choose between a calendar view and a list view. If you do not set it, the choice will be taken from your organizer settings::
+There is an optional ``style`` parameter that let's you choose between a monthly calendar view, a week view and a list
+view. If you do not set it, the choice will be taken from your organizer settings::
 
    <pretix-widget event="https://pretix.eu/demo/series/" style="list"></pretix-widget>
    <pretix-widget event="https://pretix.eu/demo/series/" style="calendar"></pretix-widget>
+   <pretix-widget event="https://pretix.eu/demo/series/" style="week"></pretix-widget>
+
+If you have more than 100 events, the system might refuse to show a list view and always show a calendar for performance
+reasons instead.
 
 You can see an example here:
 

doc/user/faq.rst

@@ -58,28 +58,6 @@ method without creating a new order. If payment deadlines were dependent on the
 forth could either allow someone to extend their deadline forever, or render someones order invalid by moving the date
 back in the past.
 
-How can I revert a check-in?
-----------------------------
-
-Neither our apps nor our web interface can currently undo the check-in of a tickets. We know that this is
-inconvenient for some of you, but we have a good reason for it:
-
-Our Desktop and Android apps both support an asynchronous mode in which they can scan tickets while staying
-independent of their internet connection. When scanning with multiple devices, it can of course happen that two
-devices scan the same ticket without knowing of the other scan. As soon as one of the devices regains connectivity, it
-will upload its activity and the server marks the ticket as checked in -- regardless of the order in which the two
-scans were made and uploaded (which could be two different orders).
-
-If we'd provide a "check out" feature, it would not only be used to fix an accidental scan, but scan at entry and
-exit to count the current number of people inside etc. In this case, the order of operations matters very much for them
-to make sense and provide useful results. This makes implementing an asynchronous mode much more complicated.
-
-In this trade off, we chose offline-capabilities over the check out feature. We plan on solving this problem in the
-future, but we're not there yet.
-
-If you're just *testing* the check-in capabilities and want to clean out everything for the real process, you can just
-delete and re-create the check-in list.
-
 Why does pretix not support any 1D (linear) bar codes?
 ------------------------------------------------------
 

doc/user/organizers/domain.rst

@@ -14,30 +14,23 @@ and with pretix, you can do this. On this page, you find out the necessary steps
 With the pretix.eu hosted service
 ---------------------------------
 
-Step 1: DNS Configuration
-#########################
+Go to "Organizers" in the backend and select your organizer account. Then, go to "Settings" and "Custom Domain".
+
+This page will show you instructions on how to set up your own domain. Basically, it works like this:
 
 Go to the website of the provider you registered your domain name with. Look for the "DNS" settings page in their
 interface. Unfortunately, we can't tell you exactly how that is named and how it looks, since it is different for every
 domain provider.
 
 Use this interface to add a new subdomain record, e.g. ``tickets`` of the type ``CNAME`` (might also be called "alias").
-The value of the record should be ``www.pretix.eu``.
-
-Step 2: Wait for the DNS entry to propagate
-###########################################
+The value of the record should be the one shown on the "Custom Domain" page in pretix' backend.
 
 Submit your changes and wait a bit, it can regularly take up to three hours for DNS changes to propagate to the caches
 of all DNS servers. You can try checking by accessing your new subdomain, ``http://tickets.awesomepartycorp.com``.
 If DNS was changed successfully, you should see a SSL certificate error. If you ignore the error and access the page
 anyways, you should get a pretix-themed error page with the headline "Unknown domain".
 
-Step 3: Tell us
-###############
-
-Write an email to support@pretix.eu, naming your new domain and your organizer account. We will then generate a SSL
-certificate for you (for free!) and configure the domain.
-
+Now, tell us about your domain on the "Custom Domain" page to get started.
 
 With a custom pretix installation
 ---------------------------------

doc/user/payments/settings.rst

@@ -1,8 +1,8 @@
 General settings
 ================
 
-At "Settings" → "Payment", you can configure every aspect related to the payments you want to accept. The upper part
-of the page shows a number of general settings that affect all payment methods:
+At "Settings" → "Payment", you can configure every aspect related to the payments you want to accept. The "Deadline"
+and "Advanced" tabs of the page show a number of general settings that affect all payment methods:
 
 .. thumbnail:: ../../screens/event/settings_payment.png
    :align: center

src/MANIFEST.in

@@ -3,6 +3,7 @@ include README.rst
 recursive-include pretix/static *
 recursive-include pretix/static.dist *
 recursive-include pretix/locale *
+recursive-include pretix/helpers/locale *
 recursive-include pretix/base/templates *
 recursive-include pretix/control/templates *
 recursive-include pretix/presale/templates *

src/pretix/__init__.py

@@ -1 +1 @@
-__version__ = "3.7.0"
+__version__ = "3.11.1"

src/pretix/api/models.py

@@ -3,7 +3,7 @@ from datetime import timedelta
 from django.db import models
 from django.urls import reverse
 from django.utils.timezone import now
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from oauth2_provider.generators import (
     generate_client_id, generate_client_secret,
 )

src/pretix/api/serializers/cart.py

@@ -2,7 +2,7 @@ from datetime import timedelta
 
 from django.utils.crypto import get_random_string
 from django.utils.timezone import now
-from django.utils.translation import ugettext_lazy
+from django.utils.translation import gettext_lazy
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
@@ -56,7 +56,7 @@ class CartPositionCreateSerializer(I18nAwareModelSerializer):
                           else validated_data.get('item').quotas.filter(subevent=validated_data.get('subevent')))
             if len(new_quotas) == 0:
                 raise ValidationError(
-                    ugettext_lazy('The product "{}" is not assigned to a quota.').format(
+                    gettext_lazy('The product "{}" is not assigned to a quota.').format(
                         str(validated_data.get('item'))
                     )
                 )
@@ -64,8 +64,8 @@ class CartPositionCreateSerializer(I18nAwareModelSerializer):
                 avail = quota.availability()
                 if avail[0] != Quota.AVAILABILITY_OK or (avail[1] is not None and avail[1] < 1):
                     raise ValidationError(
-                        ugettext_lazy('There is not enough quota available on quota "{}" to perform '
-                                      'the operation.').format(
+                        gettext_lazy('There is not enough quota available on quota "{}" to perform '
+                                     'the operation.').format(
                             quota.name
                         )
                     )
@@ -88,7 +88,7 @@ class CartPositionCreateSerializer(I18nAwareModelSerializer):
                 else:
                     validated_data['seat'] = seat
                     if not seat.is_available(sales_channel=validated_data.get('sales_channel', 'web')):
-                        raise ValidationError(ugettext_lazy('The selected seat "{seat}" is not available.').format(seat=seat.name))
+                        raise ValidationError(gettext_lazy('The selected seat "{seat}" is not available.').format(seat=seat.name))
             elif seated:
                 raise ValidationError('The specified product requires to choose a seat.')
 

src/pretix/api/serializers/checkin.py

@@ -1,4 +1,4 @@
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
@@ -14,7 +14,19 @@ class CheckinListSerializer(I18nAwareModelSerializer):
     class Meta:
         model = CheckinList
         fields = ('id', 'name', 'all_products', 'limit_products', 'subevent', 'checkin_count', 'position_count',
-                  'include_pending', 'auto_checkin_sales_channels')
+                  'include_pending', 'auto_checkin_sales_channels', 'allow_multiple_entries', 'allow_entry_after_exit',
+                  'rules')
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        for exclude_field in self.context['request'].query_params.getlist('exclude'):
+            p = exclude_field.split('.')
+            if p[0] in self.fields:
+                if len(p) == 1:
+                    del self.fields[p[0]]
+                elif len(p) == 2:
+                    self.fields[p[0]].child.fields.pop(p[1])
 
     def validate(self, data):
         data = super().validate(data)
@@ -28,9 +40,7 @@ class CheckinListSerializer(I18nAwareModelSerializer):
                 raise ValidationError(_('One or more items do not belong to this event.'))
 
         if event.has_subevents:
-            if not full_data.get('subevent'):
-                raise ValidationError(_('Subevent cannot be null for event series.'))
-            if event != full_data.get('subevent').event:
+            if full_data.get('subevent') and event != full_data.get('subevent').event:
                 raise ValidationError(_('The subevent does not belong to this event.'))
         else:
             if full_data.get('subevent'):

src/pretix/api/serializers/event.py

@@ -2,7 +2,7 @@ from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.db import transaction
 from django.utils.functional import cached_property
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from django_countries.serializers import CountryFieldMixin
 from hierarkey.proxy import HierarkeyProxy
 from pytz import common_timezones
@@ -29,6 +29,9 @@ class MetaDataField(Field):
         }
 
     def to_internal_value(self, data):
+        if not isinstance(data, dict) or not all(isinstance(k, str) for k in data.keys()):
+            raise ValidationError('meta_data needs to be an object (str -> str).')
+
         return {
             'meta_data': data
         }
@@ -42,6 +45,8 @@ class MetaPropertyField(Field):
         }
 
     def to_internal_value(self, data):
+        if not isinstance(data, dict) or not all(isinstance(k, str) for k in data.keys()) or not all(isinstance(k, str) for k in data.values()):
+            raise ValidationError('item_meta_properties needs to be an object (str -> str).')
         return {
             'item_meta_properties': data
         }
@@ -58,6 +63,8 @@ class SeatCategoryMappingField(Field):
         }
 
     def to_internal_value(self, data):
+        if not isinstance(data, dict) or not all(isinstance(k, str) for k in data.keys()) or not all(isinstance(k, int) for k in data.values()):
+            raise ValidationError('seat_category_mapping needs to be an object (str -> int).')
         return {
             'seat_category_mapping': data or {}
         }
@@ -341,13 +348,13 @@ class CloneEventSerializer(EventSerializer):
 class SubEventItemSerializer(I18nAwareModelSerializer):
     class Meta:
         model = SubEventItem
-        fields = ('item', 'price')
+        fields = ('item', 'price', 'disabled')
 
 
 class SubEventItemVariationSerializer(I18nAwareModelSerializer):
     class Meta:
         model = SubEventItemVariation
-        fields = ('variation', 'price')
+        fields = ('variation', 'price', 'disabled')
 
 
 class SubEventSerializer(I18nAwareModelSerializer):
@@ -452,27 +459,29 @@ class SubEventSerializer(I18nAwareModelSerializer):
 
     @transaction.atomic
     def update(self, instance, validated_data):
-        item_price_overrides_data = validated_data.pop('subeventitem_set') if 'subeventitem_set' in validated_data else {}
-        variation_price_overrides_data = validated_data.pop('subeventitemvariation_set') if 'subeventitemvariation_set' in validated_data else {}
+        item_price_overrides_data = validated_data.pop('subeventitem_set', None)
+        variation_price_overrides_data = validated_data.pop('subeventitemvariation_set', None)
         meta_data = validated_data.pop('meta_data', None)
         seat_category_mapping = validated_data.pop('seat_category_mapping', None)
         subevent = super().update(instance, validated_data)
 
-        existing_item_overrides = {item.item: item.id for item in SubEventItem.objects.filter(subevent=subevent)}
+        if item_price_overrides_data is not None:
+            existing_item_overrides = {item.item: item.id for item in SubEventItem.objects.filter(subevent=subevent)}
 
-        for item_price_override_data in item_price_overrides_data:
-            id = existing_item_overrides.pop(item_price_override_data['item'], None)
-            SubEventItem(id=id, subevent=subevent, **item_price_override_data).save()
+            for item_price_override_data in item_price_overrides_data:
+                id = existing_item_overrides.pop(item_price_override_data['item'], None)
+                SubEventItem(id=id, subevent=subevent, **item_price_override_data).save()
 
-        SubEventItem.objects.filter(id__in=existing_item_overrides.values()).delete()
+            SubEventItem.objects.filter(id__in=existing_item_overrides.values()).delete()
 
-        existing_variation_overrides = {item.variation: item.id for item in SubEventItemVariation.objects.filter(subevent=subevent)}
+        if variation_price_overrides_data is not None:
+            existing_variation_overrides = {item.variation: item.id for item in SubEventItemVariation.objects.filter(subevent=subevent)}
 
-        for variation_price_override_data in variation_price_overrides_data:
-            id = existing_variation_overrides.pop(variation_price_override_data['variation'], None)
-            SubEventItemVariation(id=id, subevent=subevent, **variation_price_override_data).save()
+            for variation_price_override_data in variation_price_overrides_data:
+                id = existing_variation_overrides.pop(variation_price_override_data['variation'], None)
+                SubEventItemVariation(id=id, subevent=subevent, **variation_price_override_data).save()
 
-        SubEventItemVariation.objects.filter(id__in=existing_variation_overrides.values()).delete()
+            SubEventItemVariation.objects.filter(id__in=existing_variation_overrides.values()).delete()
 
         # Meta data
         if meta_data is not None:
@@ -532,6 +541,9 @@ class EventSettingsSerializer(serializers.Serializer):
         'checkout_email_helptext',
         'presale_has_ended_text',
         'voucher_explanation_text',
+        'banner_text',
+        'banner_text_bottom',
+        'show_dates_on_frontpage',
         'show_date_to',
         'show_times',
         'show_items_outside_presale_period',
@@ -552,16 +564,23 @@ class EventSettingsSerializer(serializers.Serializer):
         'meta_noindex',
         'redirect_to_checkout_directly',
         'frontpage_subevent_ordering',
+        'event_list_type',
         'frontpage_text',
         'attendee_names_asked',
         'attendee_names_required',
         'attendee_emails_asked',
         'attendee_emails_required',
-        'confirm_text',
+        'attendee_addresses_asked',
+        'attendee_addresses_required',
+        'attendee_company_asked',
+        'attendee_company_required',
+        'confirm_texts',
         'order_email_asked_twice',
+        'payment_term_mode',
         'payment_term_days',
-        'payment_term_last',
         'payment_term_weekdays',
+        'payment_term_minutes',
+        'payment_term_last',
         'payment_term_expire_automatically',
         'payment_term_accept_late',
         'payment_explanation',
@@ -589,6 +608,7 @@ class EventSettingsSerializer(serializers.Serializer):
         'invoice_numbers_consecutive',
         'invoice_numbers_prefix',
         'invoice_numbers_prefix_cancellations',
+        'invoice_numbers_counter_length',
         'invoice_attendee_name',
         'invoice_include_expire_date',
         'invoice_address_explanation_text',
@@ -603,6 +623,7 @@ class EventSettingsSerializer(serializers.Serializer):
         'invoice_introductory_text',
         'invoice_additional_text',
         'invoice_footer_text',
+        'invoice_eu_currencies',
         'cancel_allow_user',
         'cancel_allow_user_until',
         'cancel_allow_user_paid',
@@ -610,6 +631,13 @@ class EventSettingsSerializer(serializers.Serializer):
         'cancel_allow_user_paid_keep',
         'cancel_allow_user_paid_keep_fees',
         'cancel_allow_user_paid_keep_percentage',
+        'cancel_allow_user_paid_adjust_fees',
+        'cancel_allow_user_paid_adjust_fees_explanation',
+        'cancel_allow_user_paid_refund_as_giftcard',
+        'cancel_allow_user_paid_require_approval',
+        'change_allow_user_variation',
+        'change_allow_user_until',
+        'change_allow_user_price',
     ]
 
     def __init__(self, *args, **kwargs):
@@ -617,9 +645,13 @@ class EventSettingsSerializer(serializers.Serializer):
         super().__init__(*args, **kwargs)
         for fname in self.default_fields:
             kwargs = DEFAULTS[fname].get('serializer_kwargs', {})
+            if callable(kwargs):
+                kwargs = kwargs()
             kwargs.setdefault('required', False)
             kwargs.setdefault('allow_null', True)
             form_kwargs = DEFAULTS[fname].get('form_kwargs', {})
+            if callable(form_kwargs):
+                form_kwargs = form_kwargs()
             if 'serializer_class' not in DEFAULTS[fname]:
                 raise ValidationError('{} has no serializer class'.format(fname))
             f = DEFAULTS[fname]['serializer_class'](
@@ -648,3 +680,40 @@ class EventSettingsSerializer(serializers.Serializer):
         settings_dict.update(data)
         validate_settings(self.event, settings_dict)
         return data
+
+
+class DeviceEventSettingsSerializer(EventSettingsSerializer):
+    default_fields = [
+        'locales',
+        'locale',
+        'last_order_modification_date',
+        'show_quota_left',
+        'max_items_per_order',
+        'attendee_names_asked',
+        'attendee_names_required',
+        'attendee_emails_asked',
+        'attendee_emails_required',
+        'attendee_addresses_asked',
+        'attendee_addresses_required',
+        'attendee_company_asked',
+        'attendee_company_required',
+        'ticket_download',
+        'ticket_download_addons',
+        'ticket_download_nonadm',
+        'ticket_download_pending',
+        'invoice_address_asked',
+        'invoice_address_required',
+        'invoice_address_vatid',
+        'invoice_address_company_required',
+        'invoice_address_beneficiary',
+        'invoice_address_custom_field',
+        'invoice_name_required',
+        'invoice_address_not_asked_free',
+        'invoice_address_from_name',
+        'invoice_address_from',
+        'invoice_address_from_zipcode',
+        'invoice_address_from_city',
+        'invoice_address_from_country',
+        'invoice_address_from_tax_id',
+        'invoice_address_from_vat_id',
+    ]

src/pretix/api/serializers/fields.py

@@ -0,0 +1,29 @@
+from collections import OrderedDict
+
+from rest_framework import serializers
+
+
+def remove_duplicates_from_list(data):
+    return list(OrderedDict.fromkeys(data))
+
+
+class ListMultipleChoiceField(serializers.MultipleChoiceField):
+    def to_internal_value(self, data):
+        if isinstance(data, str) or not hasattr(data, '__iter__'):
+            self.fail('not_a_list', input_type=type(data).__name__)
+        if not self.allow_empty and len(data) == 0:
+            self.fail('empty')
+
+        internal_value_data = [
+            super(serializers.MultipleChoiceField, self).to_internal_value(item)
+            for item in data
+        ]
+
+        return remove_duplicates_from_list(internal_value_data)
+
+    def to_representation(self, value):
+        representation_data = [
+            self.choice_strings_to_values.get(str(item), item) for item in value
+        ]
+
+        return remove_duplicates_from_list(representation_data)

src/pretix/api/serializers/item.py

@@ -3,7 +3,7 @@ from decimal import Decimal
 from django.core.exceptions import ValidationError
 from django.db import transaction
 from django.utils.functional import cached_property
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from rest_framework import serializers
 
 from pretix.api.serializers.event import MetaDataField
@@ -45,7 +45,7 @@ class InlineItemAddOnSerializer(serializers.ModelSerializer):
     class Meta:
         model = ItemAddOn
         fields = ('addon_category', 'min_count', 'max_count',
-                  'position', 'price_included')
+                  'position', 'price_included', 'multi_allowed')
 
 
 class ItemBundleSerializer(serializers.ModelSerializer):
@@ -77,7 +77,7 @@ class ItemAddOnSerializer(serializers.ModelSerializer):
     class Meta:
         model = ItemAddOn
         fields = ('id', 'addon_category', 'min_count', 'max_count',
-                  'position', 'price_included')
+                  'position', 'price_included', 'multi_allowed')
 
     def validate(self, data):
         data = super().validate(data)
@@ -287,8 +287,8 @@ class QuestionSerializer(I18nAwareModelSerializer):
         if value:
             if value.type not in (Question.TYPE_CHOICE, Question.TYPE_BOOLEAN, Question.TYPE_CHOICE_MULTIPLE):
                 raise ValidationError('Question dependencies can only be set to boolean or choice questions.')
-        if value == self.instance:
-            raise ValidationError('A question cannot depend on itself.')
+            if value == self.instance:
+                raise ValidationError('A question cannot depend on itself.')
         return value
 
     def validate(self, data):
@@ -349,7 +349,7 @@ class QuotaSerializer(I18nAwareModelSerializer):
 
     class Meta:
         model = Quota
-        fields = ('id', 'name', 'size', 'items', 'variations', 'subevent', 'closed', 'close_when_sold_out')
+        fields = ('id', 'name', 'size', 'items', 'variations', 'subevent', 'closed', 'close_when_sold_out', 'release_after_exit')
 
     def validate(self, data):
         data = super().validate(data)

src/pretix/api/serializers/order.py

@@ -5,7 +5,7 @@ from decimal import Decimal
 import pycountry
 from django.db.models import F, Q
 from django.utils.timezone import now
-from django.utils.translation import ugettext_lazy
+from django.utils.translation import gettext_lazy
 from django_countries.fields import Country
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
@@ -39,7 +39,7 @@ class CompatibleCountryField(serializers.Field):
     def to_representation(self, instance: InvoiceAddress):
         if instance.country:
             return str(instance.country)
-        else:
+        elif hasattr(instance, 'country_old'):
             return instance.country_old
 
 
@@ -68,7 +68,7 @@ class InvoiceAddressSerializer(I18nAwareModelSerializer):
             data['name_parts']['_scheme'] = self.context['request'].event.settings.name_scheme
 
         if data.get('country'):
-            if not pycountry.countries.get(alpha_2=data.get('country')):
+            if not pycountry.countries.get(alpha_2=data.get('country').code):
                 raise ValidationError(
                     {'country': ['Invalid country code.']}
                 )
@@ -122,7 +122,7 @@ class AnswerSerializer(I18nAwareModelSerializer):
 class CheckinSerializer(I18nAwareModelSerializer):
     class Meta:
         model = Checkin
-        fields = ('datetime', 'list', 'auto_checked_in')
+        fields = ('datetime', 'list', 'auto_checked_in', 'type')
 
 
 class OrderDownloadsField(serializers.Field):
@@ -211,10 +211,12 @@ class OrderPositionSerializer(I18nAwareModelSerializer):
     order = serializers.SlugRelatedField(slug_field='code', read_only=True)
     pdf_data = PdfDataSerializer(source='*')
     seat = InlineSeatSerializer(read_only=True)
+    country = CompatibleCountryField(source='*')
 
     class Meta:
         model = OrderPosition
         fields = ('id', 'order', 'positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_name_parts',
+                  'company', 'street', 'zipcode', 'city', 'country', 'state',
                   'attendee_email', 'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'subevent', 'checkins',
                   'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'seat', 'canceled')
 
@@ -268,8 +270,9 @@ class CheckinListOrderPositionSerializer(OrderPositionSerializer):
     class Meta:
         model = OrderPosition
         fields = ('id', 'order', 'positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_name_parts',
+                  'company', 'street', 'zipcode', 'city', 'country', 'state',
                   'attendee_email', 'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'subevent', 'checkins',
-                  'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'require_attention',
+                  'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'seat', 'require_attention',
                   'order__status')
 
 
@@ -374,6 +377,14 @@ class OrderSerializer(I18nAwareModelSerializer):
         if not self.context['request'].query_params.get('pdf_data', 'false') == 'true':
             self.fields['positions'].child.fields.pop('pdf_data')
 
+        for exclude_field in self.context['request'].query_params.getlist('exclude'):
+            p = exclude_field.split('.')
+            if p[0] in self.fields:
+                if len(p) == 1:
+                    del self.fields[p[0]]
+                elif len(p) == 2:
+                    self.fields[p[0]].child.fields.pop(p[1])
+
     def validate_locale(self, l):
         if l not in set(k for k in self.instance.event.settings.locales):
             raise ValidationError('"{}" is not a supported locale for this event.'.format(l))
@@ -414,16 +425,26 @@ class OrderSerializer(I18nAwareModelSerializer):
         return instance
 
 
+class SimulatedOrderPositionSerializer(OrderPositionSerializer):
+    addon_to = serializers.SlugRelatedField(read_only=True, slug_field='positionid')
+
+
+class SimulatedOrderSerializer(OrderSerializer):
+    positions = SimulatedOrderPositionSerializer(many=True, read_only=True)
+
+
 class PriceCalcSerializer(serializers.Serializer):
     item = serializers.PrimaryKeyRelatedField(queryset=Item.objects.none(), required=False, allow_null=True)
     variation = serializers.PrimaryKeyRelatedField(queryset=ItemVariation.objects.none(), required=False, allow_null=True)
     subevent = serializers.PrimaryKeyRelatedField(queryset=SubEvent.objects.none(), required=False, allow_null=True)
+    tax_rule = serializers.PrimaryKeyRelatedField(queryset=TaxRule.objects.none(), required=False, allow_null=True)
     locale = serializers.CharField(allow_null=True, required=False)
 
     def __init__(self, *args, **kwargs):
         event = kwargs.pop('event')
         super().__init__(*args, **kwargs)
         self.fields['item'].queryset = event.items.all()
+        self.fields['tax_rule'].queryset = event.tax_rules.all()
         self.fields['variation'].queryset = ItemVariation.objects.filter(item__event=event)
         if event.has_subevents:
             self.fields['subevent'].queryset = event.subevents.all()
@@ -516,12 +537,22 @@ class OrderPositionCreateSerializer(I18nAwareModelSerializer):
                                      max_digits=10)
     voucher = serializers.SlugRelatedField(slug_field='code', queryset=Voucher.objects.none(),
                                            required=False, allow_null=True)
+    country = CompatibleCountryField(source='*')
 
     class Meta:
         model = OrderPosition
         fields = ('positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_name_parts', 'attendee_email',
+                  'company', 'street', 'zipcode', 'city', 'country', 'state',
                   'secret', 'addon_to', 'subevent', 'answers', 'seat', 'voucher')
 
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        for k, v in self.fields.items():
+            if k in ('company', 'street', 'zipcode', 'city', 'country', 'state'):
+                v.required = False
+                v.allow_blank = True
+                v.allow_null = True
+
     def validate_secret(self, secret):
         if secret and OrderPosition.all.filter(order__event=self.context['event'], secret=secret).exists():
             raise ValidationError(
@@ -576,6 +607,24 @@ class OrderPositionCreateSerializer(I18nAwareModelSerializer):
             )
         if data.get('attendee_name_parts') and '_scheme' not in data.get('attendee_name_parts'):
             data['attendee_name_parts']['_scheme'] = self.context['request'].event.settings.name_scheme
+
+        if data.get('country'):
+            if not pycountry.countries.get(alpha_2=data.get('country').code):
+                raise ValidationError(
+                    {'country': ['Invalid country code.']}
+                )
+
+        if data.get('state'):
+            cc = str(data.get('country') or self.instance.country or '')
+            if cc not in COUNTRIES_WITH_STATE_IN_ADDRESS:
+                raise ValidationError(
+                    {'state': ['States are not supported in country "{}".'.format(cc)]}
+                )
+            if not pycountry.subdivisions.get(code=cc + '-' + data.get('state')):
+                raise ValidationError(
+                    {'state': ['"{}" is not a known subdivision of the country "{}".'.format(data.get('state'), cc)]}
+                )
+
         return data
 
 
@@ -721,7 +770,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                 sales_channel = get_all_sales_channels()[self.initial_data['sales_channel']]
 
                 if testmode and not sales_channel.testmode_supported:
-                    raise ValidationError('This sales channel does not provide support for testmode.')
+                    raise ValidationError('This sales channel does not provide support for test mode.')
             except KeyError:
                 # We do not need to raise a ValidationError here, since there is another check to validate the
                 # sales_channel
@@ -862,7 +911,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                     else:
                         pos_data['seat'] = seat
                         if (seat not in free_seats and not seat.is_available(sales_channel=validated_data.get('sales_channel', 'web'))) or seat in seats_seen:
-                            errs[i]['seat'] = [ugettext_lazy('The selected seat "{seat}" is not available.').format(seat=seat.name)]
+                            errs[i]['seat'] = [gettext_lazy('The selected seat "{seat}" is not available.').format(seat=seat.name)]
                         seats_seen.add(seat)
                 elif seated:
                     errs[i]['seat'] = ['The specified product requires to choose a seat.']
@@ -873,11 +922,24 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                         if pos_data['voucher'].allow_ignore_quota or pos_data['voucher'].block_quota:
                             continue
 
+                    if pos_data.get('subevent'):
+                        if pos_data.get('item').pk in pos_data['subevent'].item_overrides and pos_data['subevent'].item_overrides[pos_data['item'].pk].disabled:
+                            errs[i]['item'] = [gettext_lazy('The product "{}" is not available on this date.').format(
+                                str(pos_data.get('item'))
+                            )]
+                        if (
+                                pos_data.get('variation') and pos_data['variation'].pk in pos_data['subevent'].var_overrides and
+                                pos_data['subevent'].var_overrides[pos_data['variation'].pk].disabled
+                        ):
+                            errs[i]['item'] = [gettext_lazy('The product "{}" is not available on this date.').format(
+                                str(pos_data.get('item'))
+                            )]
+
                     new_quotas = (pos_data.get('variation').quotas.filter(subevent=pos_data.get('subevent'))
                                   if pos_data.get('variation')
                                   else pos_data.get('item').quotas.filter(subevent=pos_data.get('subevent')))
                     if len(new_quotas) == 0:
-                        errs[i]['item'] = [ugettext_lazy('The product "{}" is not assigned to a quota.').format(
+                        errs[i]['item'] = [gettext_lazy('The product "{}" is not assigned to a quota.').format(
                             str(pos_data.get('item'))
                         )]
                     else:
@@ -889,7 +951,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                                 quota_avail_cache[quota][1] -= 1
                                 if quota_avail_cache[quota][1] < 0:
                                     errs[i]['item'] = [
-                                        ugettext_lazy('There is not enough quota available on quota "{}" to perform the operation.').format(
+                                        gettext_lazy('There is not enough quota available on quota "{}" to perform the operation.').format(
                                             quota.name
                                         )
                                     ]
@@ -933,7 +995,10 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                 else:
                     pos.order = order
                 if addon_to:
-                    pos.addon_to = pos_map[addon_to]
+                    if simulate:
+                        pos.addon_to = pos_map[addon_to]._wrapped
+                    else:
+                        pos.addon_to = pos_map[addon_to]
 
                 if pos.price is None:
                     price = get_price(

src/pretix/api/serializers/organizer.py

@@ -1,7 +1,7 @@
 from decimal import Decimal
 
 from django.db.models import Q
-from django.utils.translation import get_language, ugettext_lazy as _
+from django.utils.translation import get_language, gettext_lazy as _
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
@@ -55,7 +55,7 @@ class GiftCardSerializer(I18nAwareModelSerializer):
 
     class Meta:
         model = GiftCard
-        fields = ('id', 'secret', 'issuance', 'value', 'currency', 'testmode')
+        fields = ('id', 'secret', 'issuance', 'value', 'currency', 'testmode', 'expires', 'conditions')
 
 
 class EventSlugField(serializers.SlugRelatedField):

src/pretix/api/signals.py

@@ -6,6 +6,7 @@ from django_scopes import scopes_disabled
 
 from pretix.api.models import ApiCall, WebHookCall
 from pretix.base.signals import periodic_task
+from pretix.helpers.periodic import minimum_interval
 
 register_webhook_events = Signal(
     providing_args=[]
@@ -19,11 +20,13 @@ instances.
 
 @receiver(periodic_task)
 @scopes_disabled()
+@minimum_interval(minutes_after_success=12 * 60)
 def cleanup_webhook_logs(sender, **kwargs):
     WebHookCall.objects.filter(datetime__lte=now() - timedelta(days=30)).delete()
 
 
 @receiver(periodic_task)
 @scopes_disabled()
+@minimum_interval(minutes_after_success=12 * 60)
 def cleanup_api_logs(sender, **kwargs):
     ApiCall.objects.filter(created__lte=now() - timedelta(hours=24)).delete()

src/pretix/api/views/__init__.py

@@ -41,8 +41,8 @@ class ConditionalListView:
             return super().list(request, **kwargs)
 
         lmd = request.event.logentry_set.filter(
-            content_type__model=self.queryset.model._meta.model_name,
-            content_type__app_label=self.queryset.model._meta.app_label,
+            content_type__model=self.get_queryset().model._meta.model_name,
+            content_type__app_label=self.get_queryset().model._meta.app_label,
         ).aggregate(
             m=Max('datetime')
         )['m']

src/pretix/api/views/checkin.py

@@ -1,3 +1,4 @@
+import django_filters
 from django.core.exceptions import ValidationError
 from django.db.models import Count, F, Max, OuterRef, Prefetch, Q, Subquery
 from django.db.models.functions import Coalesce
@@ -27,10 +28,17 @@ from pretix.helpers.database import FixedOrderBy
 
 with scopes_disabled():
     class CheckinListFilter(FilterSet):
+        subevent_match = django_filters.NumberFilter(method='subevent_match_qs')
+
         class Meta:
             model = CheckinList
             fields = ['subevent']
 
+        def subevent_match_qs(self, qs, name, value):
+            return qs.filter(
+                Q(subevent_id=value) | Q(subevent_id__isnull=True)
+            )
+
 
 class CheckinListViewSet(viewsets.ModelViewSet):
     serializer_class = CheckinListSerializer
@@ -88,8 +96,9 @@ class CheckinListViewSet(viewsets.ModelViewSet):
         pqs = OrderPosition.objects.filter(
             order__event=clist.event,
             order__status__in=[Order.STATUS_PAID] + ([Order.STATUS_PENDING] if clist.include_pending else []),
-            subevent=clist.subevent,
         )
+        if clist.subevent:
+            pqs = pqs.filter(subevent=clist.subevent)
         if not clist.all_products:
             pqs = pqs.filter(item__in=clist.limit_products.values_list('id', flat=True))
             cqs = cqs.filter(position__item__in=clist.limit_products.values_list('id', flat=True))
@@ -191,7 +200,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
         except ValueError:
             raise Http404()
 
-    def get_queryset(self, ignore_status=False):
+    def get_queryset(self, ignore_status=False, ignore_products=False):
         cqs = Checkin.objects.filter(
             position_id=OuterRef('pk'),
             list_id=self.checkinlist.pk
@@ -201,10 +210,13 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
 
         qs = OrderPosition.objects.filter(
             order__event=self.request.event,
-            subevent=self.checkinlist.subevent
         ).annotate(
             last_checked_in=Subquery(cqs)
         )
+        if self.checkinlist.subevent:
+            qs = qs.filter(
+                subevent=self.checkinlist.subevent
+            )
 
         if self.request.query_params.get('ignore_status', 'false') != 'true' and not ignore_status:
             qs = qs.filter(
@@ -243,23 +255,40 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 Prefetch('addons', OrderPosition.objects.select_related('item', 'variation'))
             ).select_related('item', 'variation', 'order', 'addon_to', 'order__invoice_address', 'order', 'seat')
 
-        if not self.checkinlist.all_products:
+        if not self.checkinlist.all_products and not ignore_products:
             qs = qs.filter(item__in=self.checkinlist.limit_products.values_list('id', flat=True))
 
         return qs
 
-    @action(detail=True, methods=['POST'])
+    @action(detail=False, methods=['POST'], url_name='redeem', url_path='(?P<pk>[^/]+)/redeem')
     def redeem(self, *args, **kwargs):
         force = bool(self.request.data.get('force', False))
+        type = self.request.data.get('type', None) or Checkin.TYPE_ENTRY
+        if type not in dict(Checkin.CHECKIN_TYPES):
+            raise ValidationError("Invalid check-in type.")
         ignore_unpaid = bool(self.request.data.get('ignore_unpaid', False))
         nonce = self.request.data.get('nonce')
-        op = self.get_object(ignore_status=True)
 
         if 'datetime' in self.request.data:
             dt = DateTimeField().to_internal_value(self.request.data.get('datetime'))
         else:
             dt = now()
 
+        try:
+            queryset = self.get_queryset(ignore_status=True, ignore_products=True)
+            if self.kwargs['pk'].isnumeric():
+                op = queryset.get(Q(pk=self.kwargs['pk']) | Q(secret=self.kwargs['pk']))
+            else:
+                op = queryset.get(secret=self.kwargs['pk'])
+        except OrderPosition.DoesNotExist:
+            self.request.event.log_action('pretix.event.checkin.unknown', data={
+                'datetime': dt,
+                'type': type,
+                'list': self.checkinlist.pk,
+                'barcode': self.kwargs['pk']
+            }, user=self.request.user, auth=self.request.auth)
+            raise Http404()
+
         given_answers = {}
         if 'answers' in self.request.data:
             aws = self.request.data.get('answers')
@@ -283,6 +312,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 canceled_supported=self.request.data.get('canceled_supported', False),
                 user=self.request.user,
                 auth=self.request.auth,
+                type=type,
             )
         except RequiredQuestionsError as e:
             return Response({
@@ -294,6 +324,14 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 ]
             }, status=400)
         except CheckInError as e:
+            op.order.log_action('pretix.event.checkin.denied', data={
+                'position': op.id,
+                'positionid': op.positionid,
+                'errorcode': e.code,
+                'datetime': dt,
+                'type': type,
+                'list': self.checkinlist.pk
+            }, user=self.request.user, auth=self.request.auth)
             return Response({
                 'status': 'error',
                 'reason': e.code,
@@ -306,11 +344,3 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 'require_attention': op.item.checkin_attention or op.order.checkin_attention,
                 'position': CheckinListOrderPositionSerializer(op, context=self.get_serializer_context()).data
             }, status=201)
-
-    def get_object(self, ignore_status=False):
-        queryset = self.filter_queryset(self.get_queryset(ignore_status=ignore_status))
-        if self.kwargs['pk'].isnumeric():
-            obj = get_object_or_404(queryset, Q(pk=self.kwargs['pk']) | Q(secret=self.kwargs['pk']))
-        else:
-            obj = get_object_or_404(queryset, secret=self.kwargs['pk'])
-        return obj

src/pretix/api/views/event.py

@@ -10,8 +10,8 @@ from rest_framework.response import Response
 
 from pretix.api.auth.permission import EventCRUDPermission
 from pretix.api.serializers.event import (
-    CloneEventSerializer, EventSerializer, EventSettingsSerializer,
-    SubEventSerializer, TaxRuleSerializer,
+    CloneEventSerializer, DeviceEventSettingsSerializer, EventSerializer,
+    EventSettingsSerializer, SubEventSerializer, TaxRuleSerializer,
 )
 from pretix.api.views import ConditionalListView
 from pretix.base.models import (
@@ -337,10 +337,16 @@ class TaxRuleViewSet(ConditionalListView, viewsets.ModelViewSet):
 
 
 class EventSettingsView(views.APIView):
-    permission = 'can_change_event_settings'
+    permission = None
+    write_permission = 'can_change_event_settings'
 
     def get(self, request, *args, **kwargs):
-        s = EventSettingsSerializer(instance=request.event.settings, event=request.event)
+        if isinstance(request.auth, Device):
+            s = DeviceEventSettingsSerializer(instance=request.event.settings, event=request.event)
+        elif 'can_change_event_settings' in request.eventpermset:
+            s = EventSettingsSerializer(instance=request.event.settings, event=request.event)
+        else:
+            raise PermissionDenied()
         if 'explain' in request.GET:
             return Response({
                 fname: {

src/pretix/api/views/item.py

@@ -20,6 +20,7 @@ from pretix.base.models import (
     CartPosition, Item, ItemAddOn, ItemBundle, ItemCategory, ItemVariation,
     Question, QuestionOption, Quota,
 )
+from pretix.base.services.quotas import QuotaAvailability
 from pretix.helpers.dicts import merge_dicts
 
 with scopes_disabled():
@@ -533,14 +534,18 @@ class QuotaViewSet(ConditionalListView, viewsets.ModelViewSet):
     def availability(self, request, *args, **kwargs):
         quota = self.get_object()
 
-        avail = quota.availability()
+        qa = QuotaAvailability()
+        qa.queue(quota)
+        qa.compute()
+        avail = qa.results[quota]
 
         data = {
-            'paid_orders': quota.count_paid_orders(),
-            'pending_orders': quota.count_pending_orders(),
-            'blocking_vouchers': quota.count_blocking_vouchers(),
-            'cart_positions': quota.count_in_cart(),
-            'waiting_list': quota.count_waiting_list_pending(),
+            'paid_orders': qa.count_paid_orders[quota],
+            'pending_orders': qa.count_pending_orders[quota],
+            'exited_orders': qa.count_exited_orders[quota],
+            'blocking_vouchers': qa.count_vouchers[quota],
+            'cart_positions': qa.count_cart[quota],
+            'waiting_list': qa.count_pending_orders[quota],
             'available_number': avail[1],
             'available': avail[0] == Quota.AVAILABILITY_OK,
             'total_size': quota.size,

src/pretix/api/views/oauth.py

@@ -2,7 +2,7 @@ import logging
 
 from django import forms
 from django.conf import settings
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from oauth2_provider.exceptions import OAuthToolkitError
 from oauth2_provider.forms import AllowForm
 from oauth2_provider.views import (

src/pretix/api/views/order.py

@@ -4,12 +4,12 @@ from decimal import Decimal
 import django_filters
 import pytz
 from django.db import transaction
-from django.db.models import F, Prefetch, Q
+from django.db.models import Exists, F, OuterRef, Prefetch, Q
 from django.db.models.functions import Coalesce, Concat
 from django.http import FileResponse, HttpResponse
 from django.shortcuts import get_object_or_404
 from django.utils.timezone import make_aware, now
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
 from rest_framework import mixins, serializers, status, viewsets
@@ -26,12 +26,12 @@ from pretix.api.serializers.order import (
     InvoiceSerializer, OrderCreateSerializer, OrderPaymentCreateSerializer,
     OrderPaymentSerializer, OrderPositionSerializer,
     OrderRefundCreateSerializer, OrderRefundSerializer, OrderSerializer,
-    PriceCalcSerializer,
+    PriceCalcSerializer, SimulatedOrderSerializer,
 )
 from pretix.base.i18n import language
 from pretix.base.models import (
     CachedCombinedTicket, CachedTicket, Device, Event, Invoice, InvoiceAddress,
-    Order, OrderFee, OrderPayment, OrderPosition, OrderRefund, Quota,
+    Order, OrderFee, OrderPayment, OrderPosition, OrderRefund, Quota, SubEvent,
     TeamAPIToken, generate_position_secret, generate_secret,
 )
 from pretix.base.payment import PaymentException
@@ -44,7 +44,7 @@ from pretix.base.services.mail import SendMailException
 from pretix.base.services.orders import (
     OrderChangeManager, OrderError, _order_placed_email,
     _order_placed_email_attendee, approve_order, cancel_order, deny_order,
-    extend_order, mark_order_expired, mark_order_refunded,
+    extend_order, mark_order_expired, mark_order_refunded, reactivate_order,
 )
 from pretix.base.services.pricing import get_price
 from pretix.base.services.tickets import generate
@@ -52,6 +52,7 @@ from pretix.base.signals import (
     order_modified, order_paid, order_placed, register_ticket_outputs,
 )
 from pretix.base.templatetags.money import money_filter
+from pretix.control.signals import order_search_filter_q
 
 with scopes_disabled():
     class OrderFilter(FilterSet):
@@ -60,11 +61,62 @@ with scopes_disabled():
         status = django_filters.CharFilter(field_name='status', lookup_expr='iexact')
         modified_since = django_filters.IsoDateTimeFilter(field_name='last_modified', lookup_expr='gte')
         created_since = django_filters.IsoDateTimeFilter(field_name='datetime', lookup_expr='gte')
+        subevent_after = django_filters.IsoDateTimeFilter(method='subevent_after_qs')
+        search = django_filters.CharFilter(method='search_qs')
 
         class Meta:
             model = Order
             fields = ['code', 'status', 'email', 'locale', 'testmode', 'require_approval']
 
+        def subevent_after_qs(self, qs, name, value):
+            qs = qs.annotate(
+                has_se_after=Exists(
+                    OrderPosition.all.filter(
+                        subevent_id__in=SubEvent.objects.filter(
+                            Q(date_to__gt=value) | Q(date_from__gt=value, date_to__isnull=True), event=OuterRef(OuterRef('event_id'))
+                        ).values_list('id'),
+                        order_id=OuterRef('pk'),
+                    )
+                )
+            ).filter(has_se_after=True)
+            return qs
+
+        def search_qs(self, qs, name, value):
+            u = value
+            if "-" in value:
+                code = (Q(event__slug__icontains=u.rsplit("-", 1)[0])
+                        & Q(code__icontains=Order.normalize_code(u.rsplit("-", 1)[1])))
+            else:
+                code = Q(code__icontains=Order.normalize_code(u))
+
+            matching_invoices = Invoice.objects.filter(
+                Q(invoice_no__iexact=u)
+                | Q(invoice_no__iexact=u.zfill(5))
+                | Q(full_invoice_no__iexact=u)
+            ).values_list('order_id', flat=True)
+
+            matching_positions = OrderPosition.objects.filter(
+                Q(order=OuterRef('pk')) & Q(
+                    Q(attendee_name_cached__icontains=u) | Q(attendee_email__icontains=u)
+                    | Q(secret__istartswith=u) | Q(voucher__code__icontains=u)
+                )
+            ).values('id')
+
+            mainq = (
+                code
+                | Q(email__icontains=u)
+                | Q(invoice_address__name_cached__icontains=u)
+                | Q(invoice_address__company__icontains=u)
+                | Q(pk__in=matching_invoices)
+                | Q(comment__icontains=u)
+                | Q(has_pos=True)
+            )
+            for recv, q in order_search_filter_q.send(sender=getattr(self, 'event', None), query=u):
+                mainq = mainq | q
+            return qs.annotate(has_pos=Exists(matching_positions)).filter(
+                mainq
+            )
+
 
 class OrderViewSet(viewsets.ModelViewSet):
     serializer_class = OrderSerializer
@@ -83,16 +135,19 @@ class OrderViewSet(viewsets.ModelViewSet):
         return ctx
 
     def get_queryset(self):
-        if self.request.query_params.get('include_canceled_fees', 'false') == 'true':
-            fqs = OrderFee.all
-        else:
-            fqs = OrderFee.objects
-        qs = self.request.event.orders.prefetch_related(
-            Prefetch('fees', queryset=fqs.all()),
-            'payments', 'refunds', 'refunds__payment'
-        ).select_related(
-            'invoice_address'
-        )
+        qs = self.request.event.orders
+        if 'fees' not in self.request.GET.getlist('exclude'):
+            if self.request.query_params.get('include_canceled_fees', 'false') == 'true':
+                fqs = OrderFee.all
+            else:
+                fqs = OrderFee.objects
+            qs = qs.prefetch_related(Prefetch('fees', queryset=fqs.all()))
+        if 'payments' not in self.request.GET.getlist('exclude'):
+            qs = qs.prefetch_related('payments')
+        if 'refunds' not in self.request.GET.getlist('exclude'):
+            qs = qs.prefetch_related('refunds', 'refunds__payment')
+        if 'invoice_address' not in self.request.GET.getlist('exclude'):
+            qs = qs.select_related('invoice_address')
 
         if self.request.query_params.get('include_canceled_positions', 'false') == 'true':
             opq = OrderPosition.all
@@ -129,6 +184,7 @@ class OrderViewSet(viewsets.ModelViewSet):
                 return prov
         raise NotFound('Unknown output provider.')
 
+    @scopes_disabled()  # we are sure enough that get_queryset() is correct, so we save some perforamnce
     def list(self, request, **kwargs):
         date = serializers.DateTimeField().to_representation(now())
         queryset = self.filter_queryset(self.get_queryset())
@@ -261,6 +317,29 @@ class OrderViewSet(viewsets.ModelViewSet):
             )
         return self.retrieve(request, [], **kwargs)
 
+    @action(detail=True, methods=['POST'])
+    def reactivate(self, request, **kwargs):
+
+        order = self.get_object()
+        if order.status != Order.STATUS_CANCELED:
+            return Response(
+                {'detail': 'The order is not allowed to be reactivated.'},
+                status=status.HTTP_400_BAD_REQUEST
+            )
+
+        try:
+            reactivate_order(
+                order,
+                user=request.user if request.user.is_authenticated else None,
+                auth=request.auth if isinstance(request.auth, (Device, TeamAPIToken, OAuthAccessToken)) else None,
+            )
+        except OrderError as e:
+            return Response(
+                {'detail': str(e)},
+                status=status.HTTP_400_BAD_REQUEST
+            )
+        return self.retrieve(request, [], **kwargs)
+
     @action(detail=True, methods=['POST'])
     def approve(self, request, **kwargs):
         send_mail = request.data.get('send_email', True)
@@ -465,10 +544,12 @@ class OrderViewSet(viewsets.ModelViewSet):
             self.perform_create(serializer)
             send_mail = serializer._send_mail
             order = serializer.instance
-            serializer = OrderSerializer(order, context=serializer.context)
             if not order.pk:
                 # Simulation
+                serializer = SimulatedOrderSerializer(order, context=serializer.context)
                 return Response(serializer.data, status=status.HTTP_201_CREATED)
+            else:
+                serializer = OrderSerializer(order, context=serializer.context)
 
             order.log_action(
                 'pretix.event.order.placed',
@@ -720,7 +801,8 @@ class OrderPositionViewSet(mixins.DestroyModelMixin, viewsets.ReadOnlyModelViewS
         {
             "item": 2,
             "variation": null,
-            "subevent": 3
+            "subevent": 3,
+            "tax_rule": 4,
         }
 
         Sample output:
@@ -774,7 +856,11 @@ class OrderPositionViewSet(mixins.DestroyModelMixin, viewsets.ReadOnlyModelViewS
         if data.get('subevent'):
             kwargs['subevent'] = data.get('subevent')
 
+        if data.get('tax_rule'):
+            kwargs['tax_rule'] = data.get('tax_rule')
+
         price = get_price(**kwargs)
+        tr = kwargs.get('tax_rule', kwargs.get('item').tax_rule)
         with language(data.get('locale') or self.request.event.settings.locale):
             return Response({
                 'gross': price.gross,
@@ -783,6 +869,7 @@ class OrderPositionViewSet(mixins.DestroyModelMixin, viewsets.ReadOnlyModelViewS
                 'rate': price.rate,
                 'name': str(price.name),
                 'tax': price.tax,
+                'tax_rule': tr.pk if tr else None,
             })
 
     @action(detail=True, url_name='download', url_path='download/(?P<output>[^/]+)')

src/pretix/api/views/organizer.py

@@ -58,7 +58,7 @@ class SeatingPlanViewSet(viewsets.ModelViewSet):
     write_permission = 'can_change_organizer_settings'
 
     def get_queryset(self):
-        return self.request.organizer.seating_plans.all()
+        return self.request.organizer.seating_plans.order_by('name')
 
     def get_serializer_context(self):
         ctx = super().get_serializer_context()
@@ -195,7 +195,7 @@ class TeamViewSet(viewsets.ModelViewSet):
     write_permission = 'can_change_teams'
 
     def get_queryset(self):
-        return self.request.organizer.teams.all()
+        return self.request.organizer.teams.order_by('pk')
 
     def get_serializer_context(self):
         ctx = super().get_serializer_context()
@@ -268,7 +268,7 @@ class TeamInviteViewSet(CreateModelMixin, DestroyModelMixin, viewsets.ReadOnlyMo
         return get_object_or_404(self.request.organizer.teams, pk=self.kwargs.get('team'))
 
     def get_queryset(self):
-        return self.team.invites.all()
+        return self.team.invites.order_by('email')
 
     def get_serializer_context(self):
         ctx = super().get_serializer_context()
@@ -305,7 +305,7 @@ class TeamAPITokenViewSet(CreateModelMixin, DestroyModelMixin, viewsets.ReadOnly
         return get_object_or_404(self.request.organizer.teams, pk=self.kwargs.get('team'))
 
     def get_queryset(self):
-        return self.team.tokens.all()
+        return self.team.tokens.order_by('name')
 
     def get_serializer_context(self):
         ctx = super().get_serializer_context()

src/pretix/api/webhooks.py

@@ -7,7 +7,7 @@ import requests
 from celery.exceptions import MaxRetriesExceededError
 from django.db.models import Exists, OuterRef, Q
 from django.dispatch import receiver
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django_scopes import scope, scopes_disabled
 from requests import RequestException
 
@@ -125,6 +125,10 @@ def register_default_webhook_events(sender, **kwargs):
             'pretix.event.order.canceled',
             _('Order canceled'),
         ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.reactivated',
+            _('Order reactivated'),
+        ),
         ParametrizedOrderWebhookEvent(
             'pretix.event.order.expired',
             _('Order expired'),
@@ -164,9 +168,9 @@ def register_default_webhook_events(sender, **kwargs):
     )
 
 
-@app.task(base=TransactionAwareTask)
+@app.task(base=TransactionAwareTask, acks_late=True)
 def notify_webhooks(logentry_id: int):
-    logentry = LogEntry.all.get(id=logentry_id)
+    logentry = LogEntry.all.select_related('event', 'event__organizer').get(id=logentry_id)
 
     if not logentry.organizer:
         return  # We need to know the organizer
@@ -201,7 +205,7 @@ def notify_webhooks(logentry_id: int):
         send_webhook.apply_async(args=(logentry_id, notification_type.action_type, wh.pk))
 
 
-@app.task(base=ProfiledTask, bind=True, max_retries=9)
+@app.task(base=ProfiledTask, bind=True, max_retries=9, acks_late=True)
 def send_webhook(self, logentry_id: int, action_type: str, webhook_id: int):
     # 9 retries with 2**(2*x) timing is roughly 72 hours
     with scopes_disabled():

src/pretix/base/auth.py

@@ -85,6 +85,16 @@ class BaseAuthBackend:
         """
         return
 
+    def get_next_url(self, request):
+        """
+        This method will be called after a successful login to determine the next URL. Pretix in general uses the
+        ``'next'`` query parameter. However, external authentication methods could use custom attributes with hardcoded
+        names for security purposes. For example, OAuth uses ``'state'`` for keeping track of application state.
+        """
+        if "next" in request.GET:
+            return request.GET.get("next")
+        return None
+
 
 class NativeAuthBackend(BaseAuthBackend):
     identifier = 'native'

src/pretix/base/channels.py

@@ -2,7 +2,7 @@ import logging
 from collections import OrderedDict
 
 from django.dispatch import receiver
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 
 from pretix.base.signals import register_sales_channels
 

src/pretix/base/email.py

@@ -9,10 +9,12 @@ from django.core.mail.backends.smtp import EmailBackend
 from django.dispatch import receiver
 from django.template.loader import get_template
 from django.utils.timezone import now
-from django.utils.translation import get_language, ugettext_lazy as _
+from django.utils.translation import get_language, gettext_lazy as _
 from inlinestyler.utils import inline_css
 
-from pretix.base.i18n import LazyCurrencyNumber, LazyDate, LazyNumber
+from pretix.base.i18n import (
+    LazyCurrencyNumber, LazyDate, LazyExpiresDate, LazyNumber,
+)
 from pretix.base.models import Event
 from pretix.base.settings import PERSON_NAME_SCHEMES
 from pretix.base.signals import (
@@ -258,9 +260,30 @@ def _placeholder_payment(order, payment):
         return str(payment.payment_provider.order_pending_mail_render(order))
 
 
+def get_best_name(position_or_address, parts=False):
+    """
+    Return the best name we got for either an invoice address or an order position, falling back to the respective other
+    """
+    from pretix.base.models import InvoiceAddress, OrderPosition
+    if isinstance(position_or_address, InvoiceAddress):
+        if position_or_address.name:
+            return position_or_address.name_parts if parts else position_or_address.name
+        position_or_address = position_or_address.order.positions.exclude(attendee_name_cached="").exclude(attendee_name_cached__isnull=True).first()
+
+    if isinstance(position_or_address, OrderPosition):
+        if position_or_address.attendee_name:
+            return position_or_address.attendee_name_parts if parts else position_or_address.attendee_name
+        elif position_or_address.order:
+            try:
+                return position_or_address.order.invoice_address.name_parts if parts else position_or_address.order.invoice_address.name
+            except InvoiceAddress.DoesNotExist:
+                pass
+
+    return {} if parts else ""
+
+
 @receiver(register_mail_placeholders, dispatch_uid="pretixbase_register_mail_placeholders")
 def base_placeholders(sender, **kwargs):
-    from pretix.base.models import InvoiceAddress
     from pretix.multidomain.urlreverse import build_absolute_uri
 
     ph = [
@@ -294,9 +317,8 @@ def base_placeholders(sender, **kwargs):
             lambda event: LazyCurrencyNumber(Decimal('42.23'), event.currency)
         ),
         SimpleFunctionalMailTextPlaceholder(
-            'expire_date', ['event', 'order'], lambda event, order: LazyDate(order.expires.astimezone(event.timezone)),
+            'expire_date', ['event', 'order'], lambda event, order: LazyExpiresDate(order.expires.astimezone(event.timezone)),
             lambda event: LazyDate(now() + timedelta(days=15))
-            # TODO: This used to be "date" in some placeholders, add a migration!
         ),
         SimpleFunctionalMailTextPlaceholder(
             'url', ['order', 'event'], lambda order, event: build_absolute_uri(
@@ -315,6 +337,51 @@ def base_placeholders(sender, **kwargs):
                 }
             ),
         ),
+        SimpleFunctionalMailTextPlaceholder(
+            'url_info_change', ['order', 'event'], lambda order, event: build_absolute_uri(
+                event,
+                'presale:event.order.modify', kwargs={
+                    'order': order.code,
+                    'secret': order.secret,
+                }
+            ), lambda event: build_absolute_uri(
+                event,
+                'presale:event.order.modify', kwargs={
+                    'order': 'F8VVL',
+                    'secret': '6zzjnumtsx136ddy',
+                }
+            ),
+        ),
+        SimpleFunctionalMailTextPlaceholder(
+            'url_products_change', ['order', 'event'], lambda order, event: build_absolute_uri(
+                event,
+                'presale:event.order.change', kwargs={
+                    'order': order.code,
+                    'secret': order.secret,
+                }
+            ), lambda event: build_absolute_uri(
+                event,
+                'presale:event.order.change', kwargs={
+                    'order': 'F8VVL',
+                    'secret': '6zzjnumtsx136ddy',
+                }
+            ),
+        ),
+        SimpleFunctionalMailTextPlaceholder(
+            'url_cancel', ['order', 'event'], lambda order, event: build_absolute_uri(
+                event,
+                'presale:event.order.cancel', kwargs={
+                    'order': order.code,
+                    'secret': order.secret,
+                }
+            ), lambda event: build_absolute_uri(
+                event,
+                'presale:event.order.cancel', kwargs={
+                    'order': 'F8VVL',
+                    'secret': '6zzjnumtsx136ddy',
+                }
+            ),
+        ),
         SimpleFunctionalMailTextPlaceholder(
             'url', ['event', 'position'], lambda event, position: build_absolute_uri(
                 event,
@@ -429,11 +496,7 @@ def base_placeholders(sender, **kwargs):
         ),
         SimpleFunctionalMailTextPlaceholder(
             'name', ['position_or_address'],
-            lambda position_or_address: (
-                position_or_address.name
-                if isinstance(position_or_address, InvoiceAddress)
-                else position_or_address.attendee_name
-            ),
+            get_best_name,
             _('John Doe'),
         ),
     ]
@@ -448,11 +511,7 @@ def base_placeholders(sender, **kwargs):
         ))
         ph.append(SimpleFunctionalMailTextPlaceholder(
             'name_%s' % f, ['position_or_address'],
-            lambda position_or_address, f=f: (
-                position_or_address.name_parts.get(f, '')
-                if isinstance(position_or_address, InvoiceAddress)
-                else position_or_address.attendee_name_parts.get(f, '')
-            ),
+            lambda position_or_address, f=f: get_best_name(position_or_address, parts=True).get(f, ''),
             name_scheme['sample'][f]
         ))