AKModel/templates/admin/AKModel/status/status.html

+{% extends "admin/base_site.html" %}
+{% load tags_AKModel %}
+
+{% load i18n %}
+{% load tz %}
+{% load fontawesome_6 %}
+
+{% block title %}{% trans "Status" %}: {{ event }}{% endblock %}
+
+{% block content %}
+    {% timezone event.timezone %}
+        <div class="row">
+            {% for widget in widgets %}
+                <div class="card border-{{ widget.status }} mb-3 me-2 col-xl-3 col-md-4 col-sm-6 p-0">
+                    <div class="card-header">
+                        {% if widget.actions %}
+                            <div class="float-end">
+                                <a style="cursor: pointer;" data-bs-toggle="dropdown" aria-expanded="false">
+                                    &nbsp;{% fa6_icon "ellipsis-vertical" %}&nbsp;
+                                </a>
+                                <ul class="dropdown-menu dropdown-menu-end">
+                                    {% for action in widget.actions %}
+                                    <li class="dropdown-item">
+                                        <a href="{{ action.url }}">{{ action.text }}</a>
+                                    </li>
+                                    {% endfor %}
+                                </ul>
+                            </div>
+                        {% endif %}
+                        {{ widget.title }}
+                    </div>
+                    <div class="card-body">
+                        {{ widget.body }}
+                    </div>
+                </div>
+            {% endfor %}
+        </div>
+
+    {% endtimezone %}
+{% endblock %}

AKModel/templates/admin/AKModel/wiki_export.html

 {% extends "admin/base_site.html" %}
 
+{% load tags_AKModel %}
+
 {% block content %}
-<pre>
-{% for ak in AKs %}
-{% verbatim %}{{Ak Spalte 475{% endverbatim %}
+
+{% for category_name, ak_list in categories_with_aks %}
+<h3>{{ category_name }}</h3>
+<textarea style="width: 100%;height:30vh;" class="mb-3">{% for ak in ak_list %}
+{% verbatim %}{{{% endverbatim %}
+{{ ak.event.wiki_export_template_name }}
 | name={{ ak.name }}
 | beschreibung= {{ ak.description }}
-| wieviele={{  ak.interest}}
-| wer= {{ ak.owners_list }}
-| wann= {{ ak.notes }}
-| dauer= {{ ak.durations_list }}
-| reso= {{ ak.reso }}
+| wieviele={{ ak.interest_counter }}
+| wer={{ ak.owners|wiki_owners_export:ak.event }}
+| wann=
+| dauer={{ ak.durations_list }}
+| reso={{ ak.reso }}
+| vorstellung={{ ak.present }}
 {% verbatim %}}}{% endverbatim %}
+{% endfor %}</textarea>
 {% endfor %}
-</pre>
+
 {% endblock %}

AKModel/templates/admin/ak_index.html

+{% extends "admin/index.html" %}
+
+{% load i18n tz %}
+
+{% block content %}
+    <div style="margin-bottom: 20px;">
+        <h2>{% trans "Active Events" %}:</h2>
+
+        <ul>
+            {% for event in active_events %}
+                <li>
+                    <a href="{% url 'admin:AKModel_event_change' event.pk %}">{{ event }}</a>
+                    ({{ event.start|timezone:event.timezone|date:"d.m.y" }} -
+                    {{ event.end|timezone:event.timezone|date:"d.m.y" }}) &middot;
+                    <a href="{% url 'admin:event_status' event_slug=event.slug %}">{% trans "Status" %}</a> &middot;
+                    <a href="{% url 'admin:schedule' event_slug=event.slug %}">{% trans "Scheduling" %}</a>
+                </li>
+            {% endfor %}
+        </ul>
+    </div>
+    {{ block.super }}
+{% endblock %}

AKModel/templates/admin/login.html

+{% extends "admin/login.html" %}
+{% load i18n static %}
+
+
+{% block content %}
+{% if form.errors and not form.non_field_errors %}
+<p class="errornote">
+{% if form.errors.items|length == 1 %}{% translate "Please correct the error below." %}{% else %}{% translate "Please correct the errors below." %}{% endif %}
+</p>
+{% endif %}
+
+{% if form.non_field_errors %}
+{% for error in form.non_field_errors %}
+<p class="errornote">
+    {{ error }}
+</p>
+{% endfor %}
+{% endif %}
+
+<div id="content-main">
+
+{% if user.is_authenticated %}
+<p class="errornote">
+{% blocktranslate trimmed %}
+    You are authenticated as {{ username }}, but are not authorized to
+    access this page. Would you like to login to a different account?
+{% endblocktranslate %}
+</p>
+{% endif %}
+
+<form action="{{ app_path }}" method="post" id="login-form">{% csrf_token %}
+  <div class="form-row">
+    {{ form.username.errors }}
+    {{ form.username.label_tag }} {{ form.username }}
+  </div>
+  <div class="form-row">
+    {{ form.password.errors }}
+    {{ form.password.label_tag }} {{ form.password }}
+    <input type="hidden" name="next" value="{{ next }}">
+  </div>
+  {% url 'admin_password_reset' as password_reset_url %}
+  {% if password_reset_url %}
+  <div class="password-reset-link">
+    <a href="{{ password_reset_url }}">{% translate 'Forgotten your password or username?' %}</a>
+  </div>
+  {% endif %}
+  <div class="submit-row">
+    <input type="submit" value="{% translate 'Log in' %}">
+  </div>
+    <div class="text-center mt-3">
+        <a href="{% url "registration_register" %}">{% translate 'Register' %}</a>
+    </div>
+</form>
+
+</div>
+{% endblock %}

AKModel/templatetags/tags_AKModel.py

 from django import template
 from django.apps import apps
 from django.conf import settings
+from django.utils.html import format_html, mark_safe, conditional_escape
+from django.templatetags.static import static
+from django.template.defaultfilters import date
+from fontawesome_6.app_settings import get_css
+
+from AKModel.models import Event
 
 register = template.Library()
 
 
-# Get Footer Info from settings
 @register.simple_tag
 def footer_info():
+    """
+    Get Footer Info from settings
+
+    :return: a dict of several strings like the impress URL to use in the footer
+    :rtype: Dict[str, str]
+    """
     return settings.FOOTER_INFO
 
 
 @register.filter
 def check_app_installed(name):
+    """
+    Check whether the app with the given name is active in this instance
+
+    :param name: name of the app to check for
+    :return: true if app is installed
+    :rtype: bool
+    """
     return apps.is_installed(name)
 
 
 @register.filter
 def message_bootstrap_class(tag):
+    """
+    Turn message severity classes into corresponding bootstrap css classes
+
+    :param tag: severity of the message
+    :return: matching bootstrap class
+    """
     if tag == "error":
         return "alert-danger"
-    elif tag == "success":
+    if tag == "success":
         return "alert-success"
-    elif tag == "warning":
+    if tag == "warning":
         return "alert-warning"
     return "alert-info"
+
+
+@register.filter
+def wiki_owners_export(owners, event):
+    """
+    Preserve owner link information for wiki export by using internal links if possible
+    but external links when owner specified a non-wikilink. This is applied to the full list of owners
+
+    :param owners: list of owners
+    :param event: event this owner belongs to and that is currently exported (specifying this directly prevents unnecessary database lookups) #pylint: disable=line-too-long
+    :return: linkified owners list in wiki syntax
+    :rtype: str
+    """
+    def to_link(owner):
+        if owner.link != '':
+            event_link_prefix, _ = event.base_url.rsplit("/", 1)
+            link_prefix, link_end = owner.link.rsplit("/", 1)
+            if event_link_prefix == link_prefix:
+                return f"[[{link_end}|{str(owner)}]]"
+            return f"[{owner.link} {str(owner)}]"
+        return str(owner)
+
+    return ", ".join(to_link(owner) for owner in owners.all())
+
+
+@register.filter
+def event_month_year(event:Event):
+    """
+    Print rough event date (month and year)
+    :param event: event to print the date for
+    :return: string containing rough date information for event
+    """
+    if event.start.month == event.end.month:
+        return f"{date(event.start, 'F')} {event.start.year}"
+    event_start_string = date(event.start, 'F')
+    if event.start.year != event.end.year:
+        event_start_string = f"{event_start_string} {event.start.year}"
+    return f"{event_start_string} - {date(event.end, 'F')} {event.end.year}"
+
+
+# get list of relevant css fontawesome css files for this instance
+css = get_css()
+
+
+@register.simple_tag
+def fontawesome_6_css():
+    """
+    Create html code to load all required fontawesome css files
+
+    :return: HTML code to load css
+    :rtype: str
+    """
+    return mark_safe(conditional_escape('\n').join(format_html(
+            '<link href="{}" rel="stylesheet" media="all">', stylesheet) for stylesheet in css))
+
+
+@register.simple_tag
+def fontawesome_6_js():
+    """
+    Create html code to load all required fontawesome javascript files
+
+    :return: HTML code to load js
+    :rtype: str
+    """
+    return mark_safe(format_html(
+        '<script type="text/javascript" src="{}"></script>', static('fontawesome_6/js/django-fontawesome.js')
+    ))

AKModel/tests.py

-# Create your tests here.

AKModel/tests/test_views.py

+import traceback
+from typing import List
+
+from django.contrib.auth import get_user_model
+from django.contrib.messages import get_messages
+from django.contrib.messages.storage.base import Message
+from django.test import TestCase
+from django.urls import reverse, reverse_lazy
+
+from AKModel.models import (
+    AK,
+    AKCategory,
+    AKOrgaMessage,
+    AKOwner,
+    AKRequirement,
+    AKSlot,
+    AKTrack,
+    ConstraintViolation,
+    DefaultSlot,
+    Event,
+    Room,
+)
+
+
+class BasicViewTests:
+    """
+    Parent class for "standard" tests of views
+
+    Provided with a list of views and arguments (if necessary), this will test that views
+    - render correctly without errors
+    - are only reachable with the correct rights (neither too freely nor too restricted)
+
+    To do this, the test creates sample users, fixtures are loaded automatically by the django test framework.
+    It also provides helper functions, e.g., to check for correct messages to the user or more simply generate
+    the URLs to test
+
+    In this class, methods from :class:`TestCase` will be called at multiple places event though TestCase is not a
+    parent of this class but has to be included as parent in concrete implementations of this class seperately.
+    It however still makes sense to treat this class as some kind of mixin and not implement it as a child of TestCase,
+    since the test framework does not understand the concept of abstract test definitions and would handle this class
+    as real test case otherwise, distorting the test results.
+    """
+
+    # pylint: disable=no-member
+    VIEWS = []
+    APP_NAME = ""
+    VIEWS_STAFF_ONLY = []
+    EDIT_TESTCASES = []
+
+    def setUp(self):  # pylint: disable=invalid-name
+        """
+        Setup testing by creating sample users
+        """
+        user_model = get_user_model()
+        self.staff_user = user_model.objects.create(
+            username="Test Staff User",
+            email="teststaff@example.com",
+            password="staffpw",
+            is_staff=True,
+            is_active=True,
+        )
+        self.admin_user = user_model.objects.create(
+            username="Test Admin User",
+            email="testadmin@example.com",
+            password="adminpw",
+            is_staff=True,
+            is_superuser=True,
+            is_active=True,
+        )
+        self.deactivated_user = user_model.objects.create(
+            username="Test Deactivated User",
+            email="testdeactivated@example.com",
+            password="deactivatedpw",
+            is_staff=True,
+            is_active=False,
+        )
+
+    def _name_and_url(self, view_name):
+        """
+        Get full view name (with prefix if there is one) and url from raw view definition
+
+        :param view_name: raw definition of a view
+        :type view_name: (str, dict)
+        :return: full view name with prefix if applicable, url of the view
+        :rtype: str, str
+        """
+        view_name_with_prefix = (
+            f"{self.APP_NAME}:{view_name[0]}" if self.APP_NAME != "" else view_name[0]
+        )
+        url = reverse(view_name_with_prefix, kwargs=view_name[1])
+        return view_name_with_prefix, url
+
+    def _assert_message(self, response, expected_message, msg_prefix=""):
+        """
+        Assert that the correct message is shown and cause test to fail if not
+
+        :param response: response to check
+        :param expected_message: message that should be shown
+        :param msg_prefix: prefix for the error message when test fails
+        """
+        messages: List[Message] = list(get_messages(response.wsgi_request))
+
+        msg_count = "No message shown to user"
+        msg_content = "Wrong message, expected '{expected_message}'"
+        if msg_prefix != "":
+            msg_count = f"{msg_prefix}: {msg_count}"
+            msg_content = f"{msg_prefix}: {msg_content}"
+
+        # Check that the last message correctly reports the issue
+        # (there might be more messages from previous calls that were not already rendered)
+        self.assertGreater(len(messages), 0, msg=msg_count)
+        self.assertEqual(messages[-1].message, expected_message, msg=msg_content)
+
+    def test_views_for_200(self):
+        """
+        Test the list of public views (as specified in "VIEWS") for error-free rendering
+        """
+        for view_name in self.VIEWS:
+            view_name_with_prefix, url = self._name_and_url(view_name)
+            try:
+                response = self.client.get(url)
+                self.assertEqual(
+                    response.status_code,
+                    200,
+                    msg=f"{view_name_with_prefix} ({url}) broken",
+                )
+            except Exception:  # pylint: disable=broad-exception-caught
+                self.fail(
+                    f"An error occurred during rendering of {view_name_with_prefix} ({url}):"
+                    f"\n\n{traceback.format_exc()}"
+                )
+
+    def test_access_control_staff_only(self):
+        """
+        Test whether internal views (as specified in "VIEWS_STAFF_ONLY" are visible to staff users and staff users only
+        """
+        # Not logged in? Views should not be visible
+        self.client.logout()
+        for view_name_info in self.VIEWS_STAFF_ONLY:
+            expected_response_code = (
+                302 if len(view_name_info) == 2 else view_name_info[2]
+            )
+            view_name_with_prefix, url = self._name_and_url(view_name_info)
+            response = self.client.get(url)
+            self.assertEqual(
+                response.status_code,
+                expected_response_code,
+                msg=f"{view_name_with_prefix} ({url}) accessible by non-staff",
+            )
+
+        # Logged in? Views should be visible
+        self.client.force_login(self.staff_user)
+        for view_name_info in self.VIEWS_STAFF_ONLY:
+            view_name_with_prefix, url = self._name_and_url(view_name_info)
+            try:
+                response = self.client.get(url)
+                self.assertEqual(
+                    response.status_code,
+                    200,
+                    msg=f"{view_name_with_prefix} ({url}) should be accessible for staff (but isn't)",
+                )
+            except Exception:  # pylint: disable=broad-exception-caught
+                self.fail(
+                    f"An error occurred during rendering of {view_name_with_prefix} ({url}):"
+                    f"\n\n{traceback.format_exc()}"
+                )
+
+        # Disabled user? Views should not be visible
+        self.client.force_login(self.deactivated_user)
+        for view_name_info in self.VIEWS_STAFF_ONLY:
+            expected_response_code = (
+                302 if len(view_name_info) == 2 else view_name_info[2]
+            )
+            view_name_with_prefix, url = self._name_and_url(view_name_info)
+            response = self.client.get(url)
+            self.assertEqual(
+                response.status_code,
+                expected_response_code,
+                msg=f"{view_name_with_prefix} ({url}) still accessible for deactivated user",
+            )
+
+    def _to_sendable_value(self, val):
+        """
+        Create representation sendable via POST from form data
+
+        Needed to automatically check create, update and delete views
+
+        :param val: value to prepare
+        :type val: any
+        :return: prepared value (normally either raw value or primary key of complex object)
+        """
+        if isinstance(val, list):
+            return [e.pk for e in val]
+        if type(val) == "RelatedManager":  # pylint: disable=unidiomatic-typecheck
+            return [e.pk for e in val.all()]
+        return val
+
+    def test_submit_edit_form(self):
+        """
+        Test edit forms (as specified in "EDIT_TESTCASES") in the most simple way (sending them again unchanged)
+        """
+        for testcase in self.EDIT_TESTCASES:
+            self._test_submit_edit_form(testcase)
+
+    def _test_submit_edit_form(self, testcase):
+        """
+        Test a single edit form by rendering and sending it again unchanged
+
+        This will test for correct rendering, dispatching/redirecting, messages and access control handling
+
+        :param testcase: details of the form to test
+        """
+        name, url = self._name_and_url((testcase["view"], testcase["kwargs"]))
+        form_name = testcase.get("form_name", "form")
+        expected_code = testcase.get("expected_code", 302)
+        if "target_view" in testcase.keys():
+            kwargs = testcase.get("target_kwargs", testcase["kwargs"])
+            _, target_url = self._name_and_url((testcase["target_view"], kwargs))
+        else:
+            target_url = url
+        expected_message = testcase.get("expected_message", "")
+        admin_user = testcase.get("admin", False)
+
+        if admin_user:
+            self.client.force_login(self.admin_user)
+        else:
+            self.client.logout()
+
+        response = self.client.get(url)
+        self.assertEqual(
+            response.status_code,
+            200,
+            msg=f"{name}: Could not load edit form via GET ({url})",
+        )
+
+        form = response.context[form_name]
+        data = {k: self._to_sendable_value(v) for k, v in form.initial.items()}
+
+        response = self.client.post(url, data=data)
+        if expected_code == 200:
+            self.assertEqual(
+                response.status_code, 200, msg=f"{name}: Did not return 200 ({url}"
+            )
+        elif expected_code == 302:
+            self.assertRedirects(
+                response,
+                target_url,
+                msg_prefix=f"{name}: Did not redirect ({url} -> {target_url}",
+            )
+        if expected_message != "":
+            self._assert_message(response, expected_message, msg_prefix=f"{name}")
+
+
+class ModelViewTests(BasicViewTests, TestCase):
+    """
+    Basic view test cases for views from AKModel plus some custom tests
+    """
+
+    fixtures = ["model.json"]
+
+    ADMIN_MODELS = [
+        (Event, "event"),
+        (AKOwner, "akowner"),
+        (AKCategory, "akcategory"),
+        (AKTrack, "aktrack"),
+        (AKRequirement, "akrequirement"),
+        (AK, "ak"),
+        (Room, "room"),
+        (AKSlot, "akslot"),
+        (AKOrgaMessage, "akorgamessage"),
+        (ConstraintViolation, "constraintviolation"),
+        (DefaultSlot, "defaultslot"),
+    ]
+
+    VIEWS_STAFF_ONLY = [
+        ("admin:index", {}),
+        ("admin:event_status", {"event_slug": "kif42"}),
+        ("admin:event_requirement_overview", {"event_slug": "kif42"}),
+        ("admin:ak_csv_export", {"event_slug": "kif42"}),
+        ("admin:ak_wiki_export", {"slug": "kif42"}),
+        ("admin:ak_delete_orga_messages", {"event_slug": "kif42"}),
+        ("admin:ak_slide_export", {"event_slug": "kif42"}),
+        ("admin:default-slots-editor", {"event_slug": "kif42"}),
+        ("admin:room-import", {"event_slug": "kif42"}),
+        ("admin:new_event_wizard_start", {}),
+    ]
+
+    EDIT_TESTCASES = [
+        {
+            "view": "admin:default-slots-editor",
+            "kwargs": {"event_slug": "kif42"},
+            "admin": True,
+        },
+    ]
+
+    def test_admin(self):
+        """
+        Test basic admin functionality (displaying and interacting with model instances)
+        """
+        self.client.force_login(self.admin_user)
+        for model in self.ADMIN_MODELS:
+            # Special treatment for a subset of views (where we exchanged default functionality, e.g., create views)
+            if model[1] == "event":
+                _, url = self._name_and_url(("admin:new_event_wizard_start", {}))
+            elif model[1] == "room":
+                _, url = self._name_and_url(("admin:room-new", {}))
+            # Otherwise, just call the creation form view
+            else:
+                _, url = self._name_and_url((f"admin:AKModel_{model[1]}_add", {}))
+            response = self.client.get(url)
+            self.assertEqual(
+                response.status_code,
+                200,
+                msg=f"Add form for model {model[1]} ({url}) broken",
+            )
+
+        for model in self.ADMIN_MODELS:
+            # Test the update view using the first existing instance of each model
+            m = model[0].objects.first()
+            if m is not None:
+                _, url = self._name_and_url(
+                    (f"admin:AKModel_{model[1]}_change", {"object_id": m.pk})
+                )
+                response = self.client.get(url)
+                self.assertEqual(
+                    response.status_code,
+                    200,
+                    msg=f"Edit form for model {model[1]} ({url}) broken",
+                )
+
+    def test_wiki_export(self):
+        """
+        Test wiki export
+        This will test whether the view renders at all and whether the export list contains the correct AKs
+        """
+        self.client.force_login(self.admin_user)
+
+        export_url = reverse_lazy("admin:ak_wiki_export", kwargs={"slug": "kif42"})
+        response = self.client.get(export_url)
+        self.assertEqual(response.status_code, 200, "Export not working at all")
+
+        export_count = 0
+        for _, aks in response.context["categories_with_aks"]:
+            for ak in aks:
+                self.assertEqual(
+                    ak.include_in_export,
+                    True,
+                    f"AK with export flag set to False (pk={ak.pk}) included in export",
+                )
+                self.assertNotEqual(
+                    ak.pk,
+                    1,
+                    "AK known to be excluded from export (PK 1) included in export",
+                )
+                export_count += 1
+
+        self.assertEqual(
+            export_count,
+            AK.objects.filter(event_id=2, include_in_export=True).count(),
+            "Wiki export contained the wrong number of AKs",
+        )

AKModel/urls.py

+from csp.decorators import csp_update
+from django.apps import apps
 from django.urls import include, path
 from rest_framework.routers import DefaultRouter
 
-from AKModel import views
+import AKModel.views.api
+from AKModel.views.manage import ExportSlidesView, PlanPublishView, PlanUnpublishView, DefaultSlotEditorView, \
+    AKsByUserView
+from AKModel.views.ak import AKRequirementOverview, AKCSVExportView, AKWikiExportView, \
+     AKMessageDeleteView
+from AKModel.views.event_wizard import NewEventWizardStartView, NewEventWizardPrepareImportView, \
+    NewEventWizardImportView, NewEventWizardActivateView, NewEventWizardFinishView, NewEventWizardSettingsView
+from AKModel.views.room import RoomBatchCreationView
+from AKModel.views.status import EventStatusView
 
+# Register basic API views/endpoints
 api_router = DefaultRouter()
-api_router.register('akowner', views.AKOwnerViewSet, basename='AKOwner')
-api_router.register('akcategory', views.AKCategoryViewSet, basename='AKCategory')
-api_router.register('aktrack', views.AKTrackViewSet, basename='AKTrack')
-api_router.register('ak', views.AKViewSet, basename='AK')
-api_router.register('room', views.RoomViewSet, basename='Room')
-api_router.register('akslot', views.AKSlotViewSet, basename='AKSlot')
+api_router.register('akowner', AKModel.views.api.AKOwnerViewSet, basename='AKOwner')
+api_router.register('akcategory', AKModel.views.api.AKCategoryViewSet, basename='AKCategory')
+api_router.register('aktrack', AKModel.views.api.AKTrackViewSet, basename='AKTrack')
+api_router.register('ak', AKModel.views.api.AKViewSet, basename='AK')
+api_router.register('room', AKModel.views.api.RoomViewSet, basename='Room')
+api_router.register('akslot', AKModel.views.api.AKSlotViewSet, basename='AKSlot')
+
+# TODO Can we move this functionality to the individual apps instead?
+extra_paths = []
+# If AKScheduling is active, register additional API endpoints
+if apps.is_installed("AKScheduling"):
+    from AKScheduling.api import ResourcesViewSet, RoomAvailabilitiesView, EventsView, EventsViewSet, \
+        ConstraintViolationsViewSet, DefaultSlotsView
+
+    api_router.register('scheduling-resources', ResourcesViewSet, basename='scheduling-resources')
+    api_router.register('scheduling-event', EventsViewSet, basename='scheduling-event')
+    api_router.register('scheduling-constraint-violations', ConstraintViolationsViewSet,
+                        basename='scheduling-constraint-violations')
+
+    extra_paths.append(path('api/scheduling-events/', EventsView.as_view(), name='scheduling-events'))
+    extra_paths.append(path('api/scheduling-room-availabilities/', RoomAvailabilitiesView.as_view(),
+             name='scheduling-room-availabilities')),
+    extra_paths.append(path('api/scheduling-default-slots/', DefaultSlotsView.as_view(),
+             name='scheduling-default-slots'))
+
+#If AKSubmission is active, register an additional API endpoint for increasing the interest counter
+if apps.is_installed("AKSubmission"):
+    from AKSubmission.api import increment_interest_counter
+    extra_paths.append(path('api/ak/<pk>/indicate-interest/', increment_interest_counter, name='submission-ak-indicate-interest'))
+
+# If AKSolverInterface is active, register additional API endpoints
+if apps.is_installed("AKSolverInterface"):
+     from AKSolverInterface.api import ExportEventForSolverViewSet
+     api_router.register("solver-export", ExportEventForSolverViewSet, basename="solver-export")
+
+event_specific_paths = [
+    path('api/', include(api_router.urls), name='api'),
+]
+event_specific_paths.extend(extra_paths)
 
 app_name = 'model'
 
+# Included all these extra view paths at a path starting with the event slug
 urlpatterns = [
     path(
         '<slug:event_slug>/',
-        include([
-            path('api/', include(api_router.urls), name='api'),
-        ])
+        include(event_specific_paths)
     ),
-    path('user/', views.UserView.as_view(), name="user"),
+    path('user/', AKModel.views.manage.UserView.as_view(), name="user"),
 ]
+
+
+def get_admin_urls_event_wizard(admin_site):
+    """
+    Defines all additional URLs for the event creation wizard
+    """
+    return [
+        path('add/wizard/start/', admin_site.admin_view(NewEventWizardStartView.as_view()),
+             name="new_event_wizard_start"),
+        path('add/wizard/settings/', csp_update(FONT_SRC=["maxcdn.bootstrapcdn.com"], SCRIPT_SRC=["cdnjs.cloudflare.com"], STYLE_SRC=["cdnjs.cloudflare.com"])(admin_site.admin_view(NewEventWizardSettingsView.as_view())),
+             name="new_event_wizard_settings"),
+        path('add/wizard/created/<slug:event_slug>/', admin_site.admin_view(NewEventWizardPrepareImportView.as_view()),
+             name="new_event_wizard_prepare_import"),
+        path('add/wizard/import/<slug:event_slug>/from/<slug:import_slug>/',
+             admin_site.admin_view(NewEventWizardImportView.as_view()),
+             name="new_event_wizard_import"),
+        path('add/wizard/activate/<slug:slug>/',
+             admin_site.admin_view(NewEventWizardActivateView.as_view()),
+             name="new_event_wizard_activate"),
+        path('add/wizard/finish/<slug:slug>/',
+             admin_site.admin_view(NewEventWizardFinishView.as_view()),
+             name="new_event_wizard_finish"),
+    ]
+
+
+def get_admin_urls_event(admin_site):
+    """
+    Defines all additional event-related view URLs that will be included in the event admin interface
+    """
+    return [
+        path('<slug:event_slug>/status/', admin_site.admin_view(EventStatusView.as_view()), name="event_status"),
+        path('<slug:event_slug>/requirements/', admin_site.admin_view(AKRequirementOverview.as_view()),
+             name="event_requirement_overview"),
+        path('<slug:event_slug>/aks/owner/<pk>/', admin_site.admin_view(AKsByUserView.as_view()),
+             name="aks_by_owner"),
+        path('<slug:event_slug>/ak-csv-export/', admin_site.admin_view(AKCSVExportView.as_view()),
+             name="ak_csv_export"),
+        path('<slug:slug>/ak-wiki-export/', admin_site.admin_view(AKWikiExportView.as_view()),
+             name="ak_wiki_export"),
+        path('<slug:event_slug>/delete-orga-messages/', admin_site.admin_view(AKMessageDeleteView.as_view()),
+             name="ak_delete_orga_messages"),
+        path('<slug:event_slug>/ak-slide-export/', admin_site.admin_view(ExportSlidesView.as_view()), name="ak_slide_export"),
+        path('plan/publish/', admin_site.admin_view(PlanPublishView.as_view()), name="plan-publish"),
+        path('plan/unpublish/', admin_site.admin_view(PlanUnpublishView.as_view()), name="plan-unpublish"),
+        path('<slug:event_slug>/defaultSlots/', admin_site.admin_view(DefaultSlotEditorView.as_view()),
+             name="default-slots-editor"),
+        path('<slug:event_slug>/importRooms/', admin_site.admin_view(RoomBatchCreationView.as_view()),
+             name="room-import"),
+    ]

AKModel/views/ak.py

+from django.contrib import messages
+from django.urls import reverse_lazy
+from django.utils.translation import gettext_lazy as _
+from django.views.generic import ListView, DetailView
+
+from AKModel.metaviews.admin import AdminViewMixin, FilterByEventSlugMixin, EventSlugMixin, IntermediateAdminView, \
+    IntermediateAdminActionView
+from AKModel.models import AKRequirement, AKSlot, Event, AKOrgaMessage, AK
+
+
+class AKRequirementOverview(AdminViewMixin, FilterByEventSlugMixin, ListView):
+    """
+    View: Display requirements for the given event
+    """
+    model = AKRequirement
+    context_object_name = "requirements"
+    title = _("Requirements for Event")
+    template_name = "admin/AKModel/requirements_overview.html"
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["event"] = self.event
+        context["site_url"] = reverse_lazy("dashboard:dashboard_event", kwargs={'slug': context["event"].slug})
+        return context
+
+
+class AKCSVExportView(AdminViewMixin, FilterByEventSlugMixin, ListView):
+    """
+    View: Export all AK slots of this event in CSV format ordered by tracks
+    """
+    template_name = "admin/AKModel/ak_csv_export.html"
+    model = AKSlot
+    context_object_name = "slots"
+    title = _("AK CSV Export")
+
+    def get_queryset(self):
+        return super().get_queryset().order_by("ak__track")
+
+
+class AKWikiExportView(AdminViewMixin, DetailView):
+    """
+    View: Export AKs of this event in wiki syntax
+    This will show one text field per category, with a separate category/field for wishes
+    """
+    template_name = "admin/AKModel/wiki_export.html"
+    model = Event
+    context_object_name = "event"
+    title = _("AK Wiki Export")
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+
+        categories_with_aks, ak_wishes = context["event"].get_categories_with_aks(
+            wishes_seperately=True,
+            filter_func=lambda ak: ak.include_in_export
+        )
+
+        context["categories_with_aks"] = [(category.name, ak_list) for category, ak_list in categories_with_aks]
+        context["categories_with_aks"].append((_("Wishes"), ak_wishes))
+
+        return context
+
+
+class AKMessageDeleteView(EventSlugMixin, IntermediateAdminView):
+    """
+    View: Confirmation page to delete confidential AK-related messages to orga
+
+    Confirmation functionality provided by :class:`AKModel.metaviews.admin.IntermediateAdminView`
+    """
+    template_name = "admin/AKModel/message_delete.html"
+    title = _("Delete AK Orga Messages")
+
+    def get_orga_messages_for_event(self, event):
+        """
+        Get all orga messages for the given event
+        """
+        return AKOrgaMessage.objects.filter(ak__event=event)
+
+    def get_success_url(self):
+        return reverse_lazy('admin:event_status', kwargs={'slug': self.event.slug})
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["ak_messages"] = self.get_orga_messages_for_event(self.event)
+        return context
+
+    def form_valid(self, form):
+        self.get_orga_messages_for_event(self.event).delete()
+        messages.add_message(self.request, messages.SUCCESS, _("AK Orga Messages successfully deleted"))
+        return super().form_valid(form)
+
+
+class AKResetInterestView(IntermediateAdminActionView):
+    """
+    View: Confirmation page to reset all manually specified interest values
+
+    Confirmation functionality provided by :class:`AKModel.metaviews.admin.IntermediateAdminView`
+    """
+    title = _("Reset interest in AKs")
+    model = AK
+    confirmation_message = _("Interest of the following AKs will be set to not filled (-1):")
+    success_message = _("Reset of interest in AKs successful.")
+
+    def action(self, form):
+        self.entities.update(interest=-1)
+
+
+class AKResetInterestCounterView(IntermediateAdminActionView):
+    """
+    View: Confirmation page to reset all interest counters (online interest indication)
+
+    Confirmation functionality provided by :class:`AKModel.metaviews.admin.IntermediateAdminView`
+    """
+    title = _("Reset AKs' interest counters")
+    model = AK
+    confirmation_message = _("Interest counter of the following AKs will be set to 0:")
+    success_message = _("AKs' interest counters set back to 0.")
+
+    def action(self, form):
+        self.entities.update(interest_counter=0)

AKModel/views.py → AKModel/views/api.py

-from django.shortcuts import get_object_or_404
-from django.views.generic import TemplateView
-from rest_framework import viewsets, permissions, mixins
+from rest_framework import mixins, viewsets, permissions
 
-from AKModel.models import Event, AK, AKSlot, Room, AKTrack, AKCategory, AKOwner
-from AKModel.serializers import AKSerializer, AKSlotSerializer, RoomSerializer, AKTrackSerializer, AKCategorySerializer, \
-    AKOwnerSerializer
+from AKModel.metaviews.admin import EventSlugMixin
+from AKModel.models import AKOwner, AKCategory, AKTrack, AK, Room, AKSlot
+from AKModel.serializers import AKOwnerSerializer, AKCategorySerializer, AKTrackSerializer, AKSerializer, \
+    RoomSerializer, AKSlotSerializer
 
 
-class EventSlugMixin:
-    """
-    Mixin to handle views with event slugs
-    """
-    event = None
-
-    def _load_event(self):
-        # Find event based on event slug
-        self.event = get_object_or_404(Event, slug=self.kwargs.get("event_slug", None))
-
-    def get(self, request, *args, **kwargs):
-        self._load_event()
-        return super().get(request, *args, **kwargs)
-
-    def post(self, request, *args, **kwargs):
-        self._load_event()
-        return super().post(request, *args, **kwargs)
-
-    def list(self, request, *args, **kwargs):
-        self._load_event()
-        return super().list(request, *args, **kwargs)
-
-    def create(self, request, *args, **kwargs):
-        self._load_event()
-        return super().create(request, *args, **kwargs)
-
-    def get_context_data(self, *, object_list=None, **kwargs):
-        context = super().get_context_data(object_list=object_list, **kwargs)
-        # Add event to context (to make it accessible in templates)
-        context["event"] = self.event
-        return context
-
-
-class FilterByEventSlugMixin(EventSlugMixin):
+class AKOwnerViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
     """
-    Mixin to filter different querysets based on a event slug from the request url
+    API View: Owners (restricted to those of the given event)
+    Read-only
     """
-
-    def get_queryset(self):
-        # Filter current queryset based on url event slug or return 404 if event slug is invalid
-        return super().get_queryset().filter(event=self.event)
-
-
-class AKOwnerViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = AKOwnerSerializer
 
@@ -59,6 +19,10 @@ class AKOwnerViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModel
 
 
 class AKCategoryViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+    """
+    API View: Categories (restricted to those of the given event)
+    Read-only
+    """
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = AKCategorySerializer
 
@@ -66,7 +30,12 @@ class AKCategoryViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListMo
         return AKCategory.objects.filter(event=self.event)
 
 
-class AKTrackViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+class AKTrackViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.CreateModelMixin, mixins.UpdateModelMixin,
+                     mixins.DestroyModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+    """
+    API View: Tracks (restricted to those of the given event)
+    Read, Write, Delete
+    """
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = AKTrackSerializer
 
@@ -74,7 +43,12 @@ class AKTrackViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModel
         return AKTrack.objects.filter(event=self.event)
 
 
-class AKViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+class AKViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.UpdateModelMixin, mixins.ListModelMixin,
+                viewsets.GenericViewSet):
+    """
+    API View: AKs (restricted to those of the given event)
+    Read, Write
+    """
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = AKSerializer
 
@@ -83,6 +57,10 @@ class AKViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin
 
 
 class RoomViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+    """
+    API View: Rooms (restricted to those of the given event)
+    Read-only
+    """
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = RoomSerializer
 
@@ -90,13 +68,14 @@ class RoomViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMix
         return Room.objects.filter(event=self.event)
 
 
-class AKSlotViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.ListModelMixin, viewsets.GenericViewSet):
+class AKSlotViewSet(EventSlugMixin, mixins.RetrieveModelMixin, mixins.CreateModelMixin, mixins.UpdateModelMixin,
+                    mixins.ListModelMixin, viewsets.GenericViewSet):
+    """
+    API View: AK slots (restricted to those of the given event)
+    Read, Write
+    """
     permission_classes = (permissions.DjangoModelPermissionsOrAnonReadOnly,)
     serializer_class = AKSlotSerializer
 
     def get_queryset(self):
         return AKSlot.objects.filter(event=self.event)
-
-
-class UserView(TemplateView):
-    template_name = "AKModel/user.html"

AKModel/views/event_wizard.py

+from django.apps import apps
+from django.contrib import messages
+from django.shortcuts import redirect
+from django.urls import reverse_lazy
+from django.utils.translation import gettext_lazy as _
+from django.views.generic import CreateView, FormView, UpdateView, DetailView
+
+from AKModel.forms import NewEventWizardStartForm, NewEventWizardSettingsForm, NewEventWizardPrepareImportForm, \
+    NewEventWizardImportForm, NewEventWizardActivateForm
+from AKModel.metaviews.admin import AdminViewMixin, WizardViewMixin, EventSlugMixin
+from AKModel.models import Event
+
+
+class NewEventWizardStartView(AdminViewMixin, WizardViewMixin, CreateView):
+    """
+    Wizard view: Entry/Start
+
+    Specify basic settings, especially the timezone for correct time treatment in the next view
+    (:class:`NewEventWizardSettingsView`) where this view will redirect to without saving the new event already
+    """
+    model = Event
+    form_class = NewEventWizardStartForm
+    template_name = "admin/AKModel/event_wizard/start.html"
+    wizard_step = 1
+
+
+class NewEventWizardSettingsView(AdminViewMixin, WizardViewMixin, CreateView):
+    """
+    Wizard view: Event settings
+
+    Specify most of the event settings. The user will see that certain fields are required since they were lead here
+    from another form in :class:`NewEventWizardStartView` that did not contain these fields even though they are
+    mandatory for the event model
+
+    Next step will then be :class:`NewEventWizardPrepareImportView` to prepare copy configuration elements
+    from an existing event
+    """
+    model = Event
+    form_class = NewEventWizardSettingsForm
+    template_name = "admin/AKModel/event_wizard/settings.html"
+    wizard_step = 2
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["timezone"] = context["form"].cleaned_data["timezone"]
+        return context
+
+    def get_success_url(self):
+        return reverse_lazy("admin:new_event_wizard_prepare_import", kwargs={"event_slug": self.object.slug})
+
+
+class NewEventWizardPrepareImportView(WizardViewMixin, EventSlugMixin, FormView):
+    """
+    Wizard view: Choose event to copy configuration elements from
+
+    The user can here select an existing event to copy elements like requirements, categories and dashboard buttons from
+    The exact subset of elements to copy from can then be selected in the next view (:class:`NewEventWizardImportView`)
+
+    Instead, this step can be skipped by directly continuing with :class:`NewEventWizardActivateView`
+    """
+    form_class = NewEventWizardPrepareImportForm
+    template_name = "admin/AKModel/event_wizard/created_prepare_import.html"
+    wizard_step = 3
+
+    def form_valid(self, form):
+        # Selected a valid event to import from? Use this to go to next step of wizard
+        return redirect("admin:new_event_wizard_import", event_slug=self.event.slug,
+                        import_slug=form.cleaned_data["import_event"].slug)
+
+
+class NewEventWizardImportView(EventSlugMixin, WizardViewMixin, FormView):
+    """
+    Wizard view: Select configuration elements to copy
+
+    Displays lists of requirements, categories and dashboard buttons that the user can select entries to be copied from
+
+    Afterwards, the event can be activated in :class:`NewEventWizardActivateView`
+    """
+    form_class = NewEventWizardImportForm
+    template_name = "admin/AKModel/event_wizard/import.html"
+    wizard_step = 4
+
+    def get_initial(self):
+        initial = super().get_initial()
+        # Remember which event was selected and send it again when submitting the form for validation
+        initial["import_event"] = Event.objects.get(slug=self.kwargs["import_slug"])
+        return initial
+
+    def form_valid(self, form):
+        # pylint: disable=consider-using-f-string
+        import_types = ["import_categories", "import_requirements"]
+        if apps.is_installed("AKDashboard"):
+            import_types.append("import_buttons")
+
+        # Loop over all kinds of configuration elements and then over all selected elements of each type
+        # and try to clone them by requesting a new primary key, adapting the event and then storing the
+        # object in the database
+        for import_type in import_types:
+            for import_obj in form.cleaned_data.get(import_type):
+                try:
+                    import_obj.event = self.event
+                    import_obj.pk = None
+                    import_obj.save()
+                    messages.add_message(self.request, messages.SUCCESS, _("Copied '%(obj)s'" % {'obj': import_obj}))
+                except BaseException as e:  # pylint: disable=broad-exception-caught
+                    messages.add_message(self.request, messages.ERROR,
+                                         _("Could not copy '%(obj)s' (%(error)s)" % {'obj': import_obj,
+                                                                                     "error": str(e)}))
+        return redirect("admin:new_event_wizard_activate", slug=self.event.slug)
+
+
+class NewEventWizardActivateView(WizardViewMixin, UpdateView):
+    """
+    Wizard view: Allow activating the event
+
+    The user is asked to make the created event active. This is done in this step and not already during the creation
+    in the second step of the wizard to prevent users seeing an unconfigured submission.
+    The event will nevertheless already be visible in the dashboard before, when a public event was created in
+    :class:`NewEventWizardSettingsView`.
+
+    In the following last step (:class:`NewEventWizardFinishView`), a confirmation of the full process and some
+    details of the created event are shown
+    """
+    model = Event
+    template_name = "admin/AKModel/event_wizard/activate.html"
+    form_class = NewEventWizardActivateForm
+    wizard_step = 5
+
+    def get_success_url(self):
+        return reverse_lazy("admin:new_event_wizard_finish", kwargs={"slug": self.object.slug})
+
+
+class NewEventWizardFinishView(WizardViewMixin, DetailView):
+    """
+    Wizard view: Confirmation and summary
+
+    Show a confirmation and a summary of the created event
+    """
+    model = Event
+    template_name = "admin/AKModel/event_wizard/finish.html"
+    wizard_step = 6

AKModel/views/manage.py

+import datetime
+import json
+import os
+import tempfile
+from itertools import zip_longest
+
+
+from django.contrib import messages
+from django.db.models.functions import Now
+from django.utils.dateparse import parse_datetime
+from django.utils.translation import gettext_lazy as _
+from django.views.generic import TemplateView, DetailView
+from django_tex.core import render_template_with_context, run_tex_in_directory
+from django_tex.response import PDFResponse
+
+from AKModel.forms import SlideExportForm, DefaultSlotEditorForm
+from AKModel.metaviews.admin import EventSlugMixin, IntermediateAdminView, IntermediateAdminActionView, AdminViewMixin
+from AKModel.models import ConstraintViolation, Event, DefaultSlot, AKOwner
+
+
+class UserView(TemplateView):
+    """
+    View: Start page for logged in user
+
+    Will over a link to backend or inform the user that their account still needs to be confirmed
+    """
+    template_name = "AKModel/user.html"
+
+
+class ExportSlidesView(EventSlugMixin, IntermediateAdminView):
+    """
+    View: Export slides to present AKs
+
+    Over a form to choose some settings for the export and then generate the PDF
+    """
+    title = _('Export AK Slides')
+    form_class = SlideExportForm
+
+    def form_valid(self, form):
+        # pylint: disable=invalid-name
+        template_name = 'admin/AKModel/export/slides.tex'
+
+        # Settings
+        NEXT_AK_LIST_LENGTH = form.cleaned_data['num_next']
+        RESULT_PRESENTATION_MODE = form.cleaned_data["presentation_mode"]
+        SPACE_FOR_NOTES_IN_WISHES = form.cleaned_data["wish_notes"]
+
+        translations = {
+            'symbols': _("Symbols"),
+            'who': _("Who?"),
+            'duration': _("Duration(s)"),
+            'reso': _("Reso intention?"),
+            'category': _("Category (for Wishes)"),
+            'wishes': _("Wishes"),
+        }
+
+        def build_ak_list_with_next_aks(ak_list):
+            """
+            Create a list of tuples cosisting of an AK and a list of upcoming AKs (list length depending on setting)
+            """
+            next_aks_list = zip_longest(*[ak_list[i + 1:] for i in range(NEXT_AK_LIST_LENGTH)], fillvalue=None)
+            return list(zip_longest(ak_list, next_aks_list, fillvalue=[]))
+
+        # Get all relevant AKs (wishes separately, and either all AKs or only those who should directly or indirectly
+        # be presented when restriction setting was chosen)
+        categories_with_aks, ak_wishes = self.event.get_categories_with_aks(wishes_seperately=True, filter_func=lambda
+            ak: not RESULT_PRESENTATION_MODE or (ak.present or (ak.present is None and ak.category.present_by_default)))
+
+        # Create context for LaTeX rendering
+        context = {
+            'title': self.event.name,
+            'categories_with_aks': [(category, build_ak_list_with_next_aks(ak_list)) for category, ak_list in
+                                    categories_with_aks],
+            'subtitle': _("AKs"),
+            "wishes": build_ak_list_with_next_aks(ak_wishes),
+            "translations": translations,
+            "result_presentation_mode": RESULT_PRESENTATION_MODE,
+            "space_for_notes_in_wishes": SPACE_FOR_NOTES_IN_WISHES,
+        }
+
+        source = render_template_with_context(template_name, context)
+
+        # Perform real compilation (run latex twice for correct page numbers)
+        with tempfile.TemporaryDirectory() as tempdir:
+            run_tex_in_directory(source, tempdir, template_name=self.template_name)
+            os.remove(f'{tempdir}/texput.tex')
+            pdf = run_tex_in_directory(source, tempdir, template_name=self.template_name)
+
+        # Show PDF file to the user (with a filename containing a timestamp to prevent confusions about the right
+        # version to use when generating multiple versions of the slides, e.g., because owners did last-minute changes
+        # to their AKs
+        timestamp = datetime.datetime.now(tz=self.event.timezone).strftime("%Y-%m-%d_%H_%M")
+        return PDFResponse(pdf, filename=f'{self.event.slug}_ak_slides_{timestamp}.pdf')
+
+
+class CVMarkResolvedView(IntermediateAdminActionView):
+    """
+    Admin action view: Mark one or multitple constraint violation(s) as resolved
+    """
+    title = _('Mark Constraint Violations as manually resolved')
+    model = ConstraintViolation
+    confirmation_message = _("The following Constraint Violations will be marked as manually resolved")
+    success_message = _("Constraint Violations marked as resolved")
+
+    def action(self, form):
+        self.entities.update(manually_resolved=True)
+
+
+class CVSetLevelViolationView(IntermediateAdminActionView):
+    """
+    Admin action view: Set one or multitple constraint violation(s) as to level "violation"
+    """
+    title = _('Set Constraint Violations to level "violation"')
+    model = ConstraintViolation
+    confirmation_message = _("The following Constraint Violations will be set to level 'violation'")
+    success_message = _("Constraint Violations set to level 'violation'")
+
+    def action(self, form):
+        self.entities.update(level=ConstraintViolation.ViolationLevel.VIOLATION)
+
+
+class CVSetLevelWarningView(IntermediateAdminActionView):
+    """
+    Admin action view: Set one or multitple constraint violation(s) as to level "warning"
+    """
+    title = _('Set Constraint Violations to level "warning"')
+    model = ConstraintViolation
+    confirmation_message = _("The following Constraint Violations will be set to level 'warning'")
+    success_message = _("Constraint Violations set to level 'warning'")
+
+    def action(self, form):
+        self.entities.update(level=ConstraintViolation.ViolationLevel.WARNING)
+
+
+class PlanPublishView(IntermediateAdminActionView):
+    """
+    Admin action view: Publish the plan of one or multitple event(s)
+    """
+    title = _('Publish plan')
+    model = Event
+    confirmation_message = _('Publish the plan(s) of:')
+    success_message = _('Plan published')
+
+    def action(self, form):
+        self.entities.update(plan_published_at=Now(), plan_hidden=False)
+
+
+class PlanUnpublishView(IntermediateAdminActionView):
+    """
+    Admin action view: Unpublish the plan of one or multitple event(s)
+    """
+    title = _('Unpublish plan')
+    model = Event
+    confirmation_message = _('Unpublish the plan(s) of:')
+    success_message = _('Plan unpublished')
+
+    def action(self, form):
+        self.entities.update(plan_published_at=None, plan_hidden=True)
+
+
+class DefaultSlotEditorView(EventSlugMixin, IntermediateAdminView):
+    """
+    Admin view: Allow to edit the default slots of an event
+    """
+    template_name = "admin/AKModel/default_slot_editor.html"
+    form_class = DefaultSlotEditorForm
+    title = _("Edit Default Slots")
+
+    def get_success_url(self):
+        return self.request.path
+
+    def get_initial(self):
+        initial = super().get_initial()
+        default_slots = [
+            {"id": s.id, "start": s.start_iso, "end": s.end_iso, "allDay": False}
+            for s in self.event.defaultslot_set.all()
+        ]
+        initial['availabilities'] = json.dumps({
+            'availabilities': default_slots
+        })
+        return initial
+
+    def form_valid(self, form):
+        default_slots_raw = json.loads(form.cleaned_data['availabilities'])["availabilities"]
+        tz = self.event.timezone
+
+        created_count = 0
+        updated_count = 0
+
+        previous_slot_ids = set(s.id for s in self.event.defaultslot_set.all())
+
+        # Loop over inputs and update or add slots
+        for slot in default_slots_raw:
+            start = parse_datetime(slot["start"]).replace(tzinfo=tz)
+            end = parse_datetime(slot["end"]).replace(tzinfo=tz)
+
+            if slot["id"] != '':
+                slot_id = int(slot["id"])
+                if slot_id not in previous_slot_ids:
+                    # Make sure only slots (currently) belonging to this event are edited
+                    # (user did not manipulate IDs and slots have not been deleted in another session in the meantime)
+                    messages.add_message(
+                        self.request,
+                        messages.WARNING,
+                        _("Could not update slot {id} since it does not belong to {event}")
+                        .format(id=slot['id'], event=self.event.name)
+                    )
+                else:
+                    # Update existing entries
+                    previous_slot_ids.remove(slot_id)
+                    original_slot = DefaultSlot.objects.get(id=slot_id)
+                    if original_slot.start != start or original_slot.end != end:
+                        original_slot.start = start
+                        original_slot.end = end
+                        original_slot.save()
+                        updated_count += 1
+            else:
+                # Create new entries
+                DefaultSlot.objects.create(
+                    start=start,
+                    end=end,
+                    event=self.event
+                )
+                created_count += 1
+
+        # Delete all slots not re-submitted by the user (and hence deleted in editor)
+        deleted_count = len(previous_slot_ids)
+        for d_id in previous_slot_ids:
+            DefaultSlot.objects.get(id=d_id).delete()
+
+        # Inform user about changes performed
+        if created_count + updated_count + deleted_count > 0:
+            messages.add_message(
+                self.request,
+                messages.SUCCESS,
+                _("Updated {u} slot(s). created {c} new slot(s) and deleted {d} slot(s)")
+                .format(u=str(updated_count), c=str(created_count), d=str(deleted_count))
+            )
+        return super().form_valid(form)
+
+
+class AKsByUserView(AdminViewMixin, EventSlugMixin, DetailView):
+    """
+    View: Show all AKs of a given user
+    """
+    model = AKOwner
+    context_object_name = 'owner'
+    template_name = "admin/AKModel/aks_by_user.html"

AKModel/views/room.py

+import csv
+
+import django.db
+from django.apps import apps
+from django.contrib import messages
+from django.http import HttpResponseRedirect
+from django.urls import reverse_lazy
+from django.utils.translation import gettext_lazy as _
+from django.views.generic import CreateView
+
+from AKModel.availability.models import Availability
+from AKModel.forms import RoomForm, RoomBatchCreationForm
+from AKModel.metaviews.admin import AdminViewMixin, EventSlugMixin, IntermediateAdminView
+from AKModel.models import Room
+
+
+class RoomCreationView(AdminViewMixin, CreateView):
+    """
+    Admin view: Create a room
+    """
+    form_class = RoomForm
+    template_name = 'admin/AKModel/room_create.html'
+
+    def get_success_url(self):
+        print(self.request.POST['save_action'])
+        if self.request.POST['save_action'] == 'save_add_another':
+            return reverse_lazy('admin:room-new')
+        if self.request.POST['save_action'] == 'save_continue':
+            return reverse_lazy('admin:AKModel_room_change', kwargs={'object_id': self.room.pk})
+        return reverse_lazy('admin:AKModel_room_changelist')
+
+    def form_valid(self, form):
+        self.room = form.save()  # pylint: disable=attribute-defined-outside-init
+
+        # translatable string with placeholders, no f-string possible
+        # pylint: disable=consider-using-f-string
+        messages.success(self.request, _("Created Room '%(room)s'" % {'room': self.room}))
+
+        return HttpResponseRedirect(self.get_success_url())
+
+
+class RoomBatchCreationView(EventSlugMixin, IntermediateAdminView):
+    """
+    Admin action: Allow to create rooms in batch by inputing a CSV-formatted list of room details into a textbox
+
+    This offers the input form, supports creation of virtual rooms if AKOnline is active, too,
+    and users can specify that default availabilities (from event start to end) should be created for the rooms
+    automatically
+    """
+    form_class = RoomBatchCreationForm
+    title = _("Import Rooms from CSV")
+
+    def get_success_url(self):
+        return reverse_lazy('admin:event_status', kwargs={'event_slug': self.event.slug})
+
+    def form_valid(self, form):
+        virtual_rooms_support = False
+        create_default_availabilities = form.cleaned_data["create_default_availabilities"]
+        created_count = 0
+
+        rooms_raw_dict: csv.DictReader = form.cleaned_data["rooms"]
+
+        # Prepare creation of virtual rooms if there is information (an URL) in the data and the AKOnline app is active
+        if apps.is_installed("AKOnline") and "url" in rooms_raw_dict.fieldnames:
+            virtual_rooms_support = True
+            # pylint: disable=import-outside-toplevel
+            from AKOnline.models import VirtualRoom
+
+        # Loop over all inputs
+        for raw_room in rooms_raw_dict:
+            # Gather the relevant information (most fields can be empty)
+            name = raw_room["name"]
+            location = raw_room["location"] if "location" in rooms_raw_dict.fieldnames else ""
+            capacity = raw_room["capacity"] if "capacity" in rooms_raw_dict.fieldnames else -1
+
+            try:
+                # Try to create a room (catches cases where the room name contains keywords or symbols that the
+                # database cannot handle (.e.g., special UTF-8 characters)
+                r = Room.objects.create(name=name,
+                                    location=location,
+                                    capacity=capacity,
+                                    event=self.event)
+
+                # and if necessary an associated virtual room, too
+                if virtual_rooms_support and raw_room["url"] != "":
+                    VirtualRoom.objects.create(room=r,
+                                               url=raw_room["url"])
+
+                # If user requested default availabilities, create them
+                if create_default_availabilities:
+                    a = Availability.with_event_length(event=self.event, room=r)
+                    a.save()
+                created_count += 1
+            except django.db.Error as e:
+                messages.add_message(self.request, messages.WARNING,
+                                     _("Could not import room {name}: {e}").format(name=name, e=str(e)))
+
+        # Inform the user about the rooms created
+        if created_count > 0:
+            messages.add_message(self.request, messages.SUCCESS,
+                                 _("Imported {count} room(s)").format(count=created_count))
+        else:
+            messages.add_message(self.request, messages.WARNING, _("No rooms imported"))
+        return super().form_valid(form)

AKModel/views/status.py

+from django.apps import apps
+from django.urls import reverse_lazy
+from django.utils.translation import gettext_lazy as _
+
+from AKModel.metaviews import status_manager
+from AKModel.metaviews.admin import EventSlugMixin
+from AKModel.metaviews.status import TemplateStatusWidget, StatusView
+
+
+@status_manager.register(name="event_overview")
+class EventOverviewWidget(TemplateStatusWidget):
+    """
+    Status page widget: Event overview
+    """
+    required_context_type = "event"
+    title = _("Overview")
+    template_name = "admin/AKModel/status/event_overview.html"
+
+    def render_status(self, context: {}) -> str:
+        return "success" if not context["event"].plan_hidden else "primary"
+
+
+@status_manager.register(name="event_categories")
+class EventCategoriesWidget(TemplateStatusWidget):
+    """
+    Status page widget: Category information
+
+    Show all categories of the event together with the number of AKs belonging to this category.
+    Offers an action to add a new category.
+    """
+    required_context_type = "event"
+    title = _("Categories")
+    template_name = "admin/AKModel/status/event_categories.html"
+    actions = [
+        {
+            "text": _("Add category"),
+            "url": reverse_lazy("admin:AKModel_akcategory_add"),
+         }
+    ]
+
+    def render_title(self, context: {}) -> str:
+        # Store category count as instance variable for re-use in body
+        self.category_count = context['event'].akcategory_set.count()  # pylint: disable=attribute-defined-outside-init
+        return f"{super().render_title(context)} ({self.category_count})"
+
+    def render_status(self, context: {}) -> str:
+        return "danger" if self.category_count == 0 else "primary"
+
+
+@status_manager.register(name="event_rooms")
+class EventRoomsWidget(TemplateStatusWidget):
+    """
+    Status page widget: Category information
+
+    Show all rooms of the event.
+    Offers actions to add a single new room as well as for batch creation.
+    """
+    required_context_type = "event"
+    title = _("Rooms")
+    template_name = "admin/AKModel/status/event_rooms.html"
+    actions = [
+        {
+            "text": _("Add Room"),
+            "url": reverse_lazy("admin:AKModel_room_add"),
+         }
+    ]
+
+    def render_title(self, context: {}) -> str:
+        # Store room count as instance variable for re-use in body
+        self.room_count = context['event'].room_set.count()  # pylint: disable=attribute-defined-outside-init
+        return f"{super().render_title(context)} ({self.room_count})"
+
+    def render_status(self, context: {}) -> str:
+        return "danger" if self.room_count == 0 else "primary"
+
+    def render_actions(self, context: {}) -> list[dict]:
+        actions = super().render_actions(context)
+        # Action has to be added here since it depends on the event for URL building
+        import_room_url = reverse_lazy("admin:room-import", kwargs={"event_slug": context["event"].slug})
+        for action in actions:
+            if action["url"] == import_room_url:
+                return actions
+
+        actions.append(
+            {
+                "text": _("Import Rooms from CSV"),
+                "url": import_room_url,
+            }
+        )
+        return actions
+
+
+@status_manager.register(name="event_aks")
+class EventAKsWidget(TemplateStatusWidget):
+    """
+    Status page widget: AK information
+
+    Show information about the AKs of this event.
+    Offers a long list of AK-related actions and also scheduling actions of AKScheduling is active
+    """
+    required_context_type = "event"
+    title = _("AKs")
+    template_name = "admin/AKModel/status/event_aks.html"
+
+    def get_context_data(self, context) -> dict:
+        context["ak_count"] = context["event"].ak_set.count()
+        context["unscheduled_slots_count"] = context["event"].akslot_set.filter(start=None).count
+        return context
+
+    def render_actions(self, context: {}) -> list[dict]:
+        actions = [
+            {
+                "text": _("Scheduling"),
+                "url": reverse_lazy("admin:schedule", kwargs={"event_slug": context["event"].slug}),
+            },
+        ]
+        if apps.is_installed("AKScheduling"):
+            actions.extend([
+                {
+                    "text": _("AKs requiring special attention"),
+                    "url": reverse_lazy("admin:special-attention", kwargs={"slug": context["event"].slug}),
+                },
+            ])
+            if context["event"].ak_set.count() > 0:
+                actions.append({
+                    "text": _("Enter Interest"),
+                    "url": reverse_lazy("admin:enter-interest",
+                                        kwargs={"event_slug": context["event"].slug,
+                                                "pk": context["event"].ak_set.all().first().pk}
+                                        ),
+                })
+        actions.extend([
+                {
+                    "text": _("Edit Default Slots"),
+                    "url": reverse_lazy("admin:default-slots-editor", kwargs={"event_slug": context["event"].slug}),
+                },
+                {
+                    "text": _("Manage ak tracks"),
+                    "url": reverse_lazy("admin:tracks_manage", kwargs={"event_slug": context["event"].slug}),
+                },
+                {
+                    "text": _("Export AKs as CSV"),
+                    "url": reverse_lazy("admin:ak_csv_export", kwargs={"event_slug": context["event"].slug}),
+                },
+                {
+                    "text": _("Export AKs for Wiki"),
+                    "url": reverse_lazy("admin:ak_wiki_export", kwargs={"slug": context["event"].slug}),
+                },
+                {
+                    "text": _("Export AK Slides"),
+                    "url": reverse_lazy("admin:ak_slide_export", kwargs={"event_slug": context["event"].slug}),
+                },
+            ]
+        )
+        if apps.is_installed("AKSolverInterface"):
+            actions.extend([
+                {
+                    "text": _("Export AKs as JSON"),
+                    "url": reverse_lazy("admin:ak_json_export", kwargs={"event_slug": context["event"].slug}),
+                },
+                {
+                    "text": _("Import AK schedule from JSON"),
+                    "url": reverse_lazy("admin:ak_schedule_json_import", kwargs={"event_slug": context["event"].slug}),
+                },
+            ])
+        return actions
+
+
+@status_manager.register(name="event_requirements")
+class EventRequirementsWidget(TemplateStatusWidget):
+    """
+    Status page widget: Requirement information information
+
+    Show information about the requirements of this event.
+    Offers actions to add new requirements or to get a list of AKs having a given requirement.
+    """
+    required_context_type = "event"
+    title = _("Requirements")
+    template_name = "admin/AKModel/status/event_requirements.html"
+
+    def render_title(self, context: {}) -> str:
+        # Store requirements count as instance variable for re-use in body
+        # pylint: disable=attribute-defined-outside-init
+        self.requirements_count = context['event'].akrequirement_set.count()
+        return f"{super().render_title(context)} ({self.requirements_count})"
+
+    def render_actions(self, context: {}) -> list[dict]:
+        return [
+            {
+                "text": _("Show AKs for requirements"),
+                "url": reverse_lazy("admin:event_requirement_overview", kwargs={"event_slug": context["event"].slug}),
+            },
+            {
+                "text": _("Add Requirement"),
+                "url": reverse_lazy("admin:AKModel_akrequirement_add"),
+            },
+        ]
+
+
+class EventStatusView(EventSlugMixin, StatusView):
+    """
+    View: Show a status dashboard for the given event
+    """
+    title = _("Event Status")
+    provided_context_type = "event"
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["site_url"] = reverse_lazy("dashboard:dashboard_event", kwargs={'slug': context["event"].slug})
+        return context

AKOnline/admin.py

+from django.contrib import admin
+
+from AKOnline.models import VirtualRoom
+
+
+@admin.register(VirtualRoom)
+class VirtualRoomAdmin(admin.ModelAdmin):
+    """
+    Admin interface for virtual room model
+    """
+    model = VirtualRoom
+    list_display = ['room', 'event', 'url']
+    list_filter = ['room__event']
+
+    def get_readonly_fields(self, request, obj=None):
+        # Don't allow changing the room on existing virtual rooms
+        # Instead, a link to the room editing form will be displayed automatically
+        if obj:
+            return self.readonly_fields + ('room', )
+        return self.readonly_fields

AKOnline/apps.py

+from django.apps import AppConfig
+
+
+class AkonlineConfig(AppConfig):
+    """
+    App configuration (default -- only to set the app name)
+    """
+    name = 'AKOnline'

AKOnline/forms.py

+from betterforms.multiform import MultiModelForm
+from django.forms import ModelForm
+
+from AKModel.forms import RoomForm
+from AKOnline.models import VirtualRoom
+
+
+class VirtualRoomForm(ModelForm):
+    """
+    Form to create a virtual room
+
+    Should be used as part of a multi form (see :class:`RoomWithVirtualForm` below)
+    """
+    class Meta:
+        model = VirtualRoom
+        # Show all fields except for room
+        exclude = ['room'] #pylint: disable=modelform-uses-exclude
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # Make the URL field optional to allow submitting the multi form without creating a virtual room
+        self.fields['url'].required = False
+
+
+class RoomWithVirtualForm(MultiModelForm):
+    """
+    Combined form to create rooms and optionally virtual rooms
+
+    Multi-Form that combines a :class:`RoomForm` (from AKModel) and a :class:`VirtualRoomForm` (see above).
+
+    The form will always create a room on valid input
+    and may additionally create a virtual room if the url field of the virtual room form part is set.
+    """
+    form_classes = {
+        'room': RoomForm,
+        'virtual': VirtualRoomForm
+    }
+
+    def save(self, commit=True):
+        objects = super().save(commit=False)
+
+        if commit:
+            room = objects['room']
+            room.save()
+
+            virtual = objects['virtual']
+            if virtual.url != "":
+                virtual.room = room
+                virtual.save()
+            else:
+                objects['virtual'] = None
+
+        return objects