AKModel/migrations/0064_event_export_slot.py

+# Generated by Django 5.1.6 on 2025-03-29 22:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("AKModel", "0063_field_validators"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="event",
+            name="export_slot",
+            field=models.DecimalField(
+                decimal_places=2,
+                default=1,
+                help_text="Slot duration in hours that is used in the timeslot discretization, when this event is exported for the solver.",
+                max_digits=4,
+                verbose_name="Export Slot Length",
+            ),
+        ),
+    ]

AKModel/migrations/0065_eventparticipant_akpreference_and_more.py

+# Generated by Django 4.2.13 on 2025-02-10 10:23
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("AKModel", "0064_event_export_slot"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="EventParticipant",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "name",
+                    models.CharField(
+                        blank=True,
+                        help_text="Name to identify a participant by (in case of questions from the organizers)",
+                        max_length=64,
+                        verbose_name="Nickname",
+                    ),
+                ),
+                (
+                    "institution",
+                    models.CharField(
+                        blank=True,
+                        help_text="Uni etc.",
+                        max_length=128,
+                        verbose_name="Institution",
+                    ),
+                ),
+                (
+                    "event",
+                    models.ForeignKey(
+                        help_text="Associated event",
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="AKModel.event",
+                        verbose_name="Event",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "Participant",
+                "verbose_name_plural": "Participants",
+                "ordering": ["name"],
+            },
+        ),
+        migrations.CreateModel(
+            name="AKPreference",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "preference",
+                    models.PositiveSmallIntegerField(
+                        choices=[
+                            (0, "Ignore"),
+                            (1, "Prefer"),
+                            (2, "Strong prefer"),
+                            (3, "Required"),
+                        ],
+                        default=0,
+                        help_text="Preference level for the AK",
+                        verbose_name="Preference",
+                    ),
+                ),
+                (
+                    "ak",
+                    models.ForeignKey(
+                        help_text="AK this preference belongs to",
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="AKModel.ak",
+                        verbose_name="AK",
+                    ),
+                ),
+                (
+                    "event",
+                    models.ForeignKey(
+                        help_text="Associated event",
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="AKModel.event",
+                        verbose_name="Event",
+                    ),
+                ),
+                (
+                    "participant",
+                    models.ForeignKey(
+                        help_text="Participant this preference belongs to",
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="AKModel.eventparticipant",
+                        verbose_name="Participant",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "AK Preference",
+                "verbose_name_plural": "AK Preferences",
+            },
+        ),
+        migrations.AddField(
+            model_name="availability",
+            name="participant",
+            field=models.ForeignKey(
+                blank=True,
+                help_text="Participant whose availability this is",
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="availabilities",
+                to="AKModel.eventparticipant",
+                verbose_name="Participant",
+            ),
+        ),
+    ]

AKModel/migrations/0066_akpreference_slot_alter_akpreference_unique_together_and_more.py

+# Generated by Django 4.2.13 on 2025-02-10 22:31
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("AKModel", "0065_eventparticipant_akpreference_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="akpreference",
+            name="slot",
+            field=models.ForeignKey(
+                default=None,
+                help_text="AKSlot this preference belongs to",
+                on_delete=django.db.models.deletion.CASCADE,
+                to="AKModel.akslot",
+                verbose_name="AKSlot",
+            ),
+            preserve_default=False,
+        ),
+        migrations.AlterUniqueTogether(
+            name="akpreference",
+            unique_together={("event", "participant", "slot")},
+        ),
+        migrations.RemoveField(
+            model_name="akpreference",
+            name="ak",
+        ),
+    ]

AKModel/migrations/0067_eventparticipant_requirements_and_more.py

+# Generated by Django 4.2.13 on 2025-02-11 00:23
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        (
+            "AKModel",
+            "0066_akpreference_slot_alter_akpreference_unique_together_and_more",
+        ),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="eventparticipant",
+            name="requirements",
+            field=models.ManyToManyField(
+                blank=True,
+                help_text="Participant's Requirements",
+                to="AKModel.akrequirement",
+                verbose_name="Requirements",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="akpreference",
+            name="slot",
+            field=models.ForeignKey(
+                help_text="AK Slot this preference belongs to",
+                on_delete=django.db.models.deletion.CASCADE,
+                to="AKModel.akslot",
+                verbose_name="AK Slot",
+            ),
+        ),
+    ]

AKModel/migrations/0068_event_export_delete_preferences_participants.py

+# Generated by Django 5.2.1 on 2025-06-17 15:57
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('AKModel', '0067_eventparticipant_requirements_and_more'),
+        ('AKPreference', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='eventparticipant',
+            name='event',
+        ),
+        migrations.RemoveField(
+            model_name='eventparticipant',
+            name='requirements',
+        ),
+        migrations.RemoveField(
+            model_name='availability',
+            name='participant',
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='poll_hidden',
+            field=models.BooleanField(default=True, help_text='Hides preference poll for non-staff users', verbose_name='Poll Hidden'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='poll_published_at',
+            field=models.DateTimeField(blank=True, help_text='Timestamp at which the preference poll was published', null=True, verbose_name='Poll published at'),
+        ),
+        migrations.DeleteModel(
+            name='AKPreference',
+        ),
+        migrations.DeleteModel(
+            name='EventParticipant',
+        ),
+        migrations.AddField(
+            model_name='availability',
+            name='participant',
+            field=models.ForeignKey(blank=True, help_text='Participant whose availability this is', null=True,
+                                    on_delete=django.db.models.deletion.CASCADE, related_name='availabilities',
+                                    to='AKPreference.eventparticipant', verbose_name='Participant'),
+        ),
+    ]

AKModel/serializers.py

 from rest_framework import serializers
 
-from AKModel.models import AK, Room, AKSlot, AKTrack, AKCategory, AKOwner
+from AKModel.models import AK, AKCategory, AKOwner, AKSlot, AKTrack, Room
+
+
+class StringListField(serializers.ListField):
+    """List field containing strings."""
+
+    child = serializers.CharField()
+
+
+class IntListField(serializers.ListField):
+    """List field containing integers."""
+
+    child = serializers.IntegerField()
 
 
 class AKOwnerSerializer(serializers.ModelSerializer):

AKModel/templates/admin/AKModel/ak_csv_export.html

@@ -4,8 +4,8 @@
 
 {% block content %}
 <pre>
-title;duration;who;requirements;prerequisites;conflicts;availabilities;category;track;reso;notes;
-{% for slot in slots %}{{ slot.ak.short_name }};{{ slot.duration }};{{ slot.ak.owners.all|join:", " }};{{ slot.ak.requirements.all|join:", " }};{{ slot.ak.prerequisites.all|join:", " }};{{ slot.ak.conflicts.all|join:", " }};{% for a in slot.ak.availabilities.all %}{{ a.start | timezone:event.timezone | date:"l H:i"  }} - {{ a.end | timezone:event.timezone | date:"l H:i" }}, {% endfor %};{{ slot.ak.category }};{{ slot.ak.track }};{{ slot.ak.reso }};{{ slot.ak.notes }};
+title;duration;who;requirements;prerequisites;conflicts;availabilities;category;types;track;reso;notes;
+{% for slot in slots %}{{ slot.ak.short_name }};{{ slot.duration }};{{ slot.ak.owners.all|join:", " }};{{ slot.ak.requirements.all|join:", " }};{{ slot.ak.prerequisites.all|join:", " }};{{ slot.ak.conflicts.all|join:", " }};{% for a in slot.ak.availabilities.all %}{{ a.start | timezone:event.timezone | date:"l H:i"  }} - {{ a.end | timezone:event.timezone | date:"l H:i" }}, {% endfor %};{{ slot.ak.category }};{{ slot.ak.types.all|join:", " }};{{ slot.ak.track }};{{ slot.ak.reso }};{{ slot.ak.notes }};
 {% endfor %}
 </pre>
 {% endblock %}

AKModel/templates/admin/AKModel/aks_by_user.html

+{% extends "admin/base_site.html" %}
+{% load tags_AKModel %}
+
+{% load i18n %}
+{% load tz %}
+{% load fontawesome_6 %}
+
+{% block title %}{% trans "AKs by Owner" %}: {{owner}}{% endblock %}
+
+{% block content %}
+    {% timezone event.timezone %}
+        <h2>[{{event}}] <a href="{% url 'admin:AKModel_akowner_change' owner.pk %}">{{owner}}</a> - {% trans "AKs" %}</h2>
+
+        <div class="row mt-4">
+            <table class="table table-striped">
+                {% for ak in owner.ak_set.all %}
+                    <tr>
+                        <td>{{ ak }}</td>
+                        {% if "AKSubmission"|check_app_installed %}
+                            <td class="text-end">
+                                <a href="{{ ak.detail_url }}" data-bs-toggle="tooltip"
+                                   title="{% trans 'Details' %}"
+                                   class="btn btn-primary">{% fa6_icon 'info' 'fas' %}</a>
+                                {% if event.active %}
+                                    <a href="{{ ak.edit_url }}" data-bs-toggle="tooltip"
+                                       title="{% trans 'Edit' %}"
+                                       class="btn btn-success">{% fa6_icon 'pencil-alt' 'fas' %}</a>
+                                {% endif %}
+                            {% endif %}
+                        </td>
+                    </tr>
+                {% empty %}
+                    <tr><td>{% trans "This user does not have any AKs currently" %}</td></tr>
+                {% endfor %}
+            </table>
+        </div>
+    {% endtimezone %}
+{% endblock %}

AKModel/templatetags/tags_AKModel.py

@@ -3,8 +3,11 @@ 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()
 
 
@@ -71,6 +74,21 @@ def wiki_owners_export(owners, event):
     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()
 

AKModel/tests.py → AKModel/tests/test_views.py

@@ -5,10 +5,21 @@ 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_lazy, reverse
-
-from AKModel.models import Event, AKOwner, AKCategory, AKTrack, AKRequirement, AK, Room, AKSlot, AKOrgaMessage, \
-    ConstraintViolation, DefaultSlot
+from django.urls import reverse, reverse_lazy
+
+from AKModel.models import (
+    AK,
+    AKCategory,
+    AKOrgaMessage,
+    AKOwner,
+    AKRequirement,
+    AKSlot,
+    AKTrack,
+    ConstraintViolation,
+    DefaultSlot,
+    Event,
+    Room,
+)
 
 
 class BasicViewTests:
@@ -29,9 +40,10 @@ class BasicViewTests:
     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 = ''
+    APP_NAME = ""
     VIEWS_STAFF_ONLY = []
     EDIT_TESTCASES = []
 
@@ -41,16 +53,26 @@ class BasicViewTests:
         """
         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
+            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
+            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
+            username="Test Deactivated User",
+            email="testdeactivated@example.com",
+            password="deactivatedpw",
+            is_staff=True,
+            is_active=False,
         )
 
     def _name_and_url(self, view_name):
@@ -62,7 +84,9 @@ class BasicViewTests:
         :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]
+        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
 
@@ -74,7 +98,7 @@ class BasicViewTests:
         :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))
+        messages: List[Message] = list(get_messages(response.wsgi_request))
 
         msg_count = "No message shown to user"
         msg_content = "Wrong message, expected '{expected_message}'"
@@ -95,10 +119,16 @@ class BasicViewTests:
             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()}")
+                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):
         """
@@ -107,11 +137,16 @@ class BasicViewTests:
         # 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]
+            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")
+            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)
@@ -119,20 +154,30 @@ class BasicViewTests:
             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)")
+                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()}")
+                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]
+            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")
+            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):
         """
@@ -182,16 +227,26 @@ class BasicViewTests:
             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})")
+        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()}
+        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}")
+            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}")
+            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}")
 
@@ -200,30 +255,42 @@ class ModelViewTests(BasicViewTests, TestCase):
     """
     Basic view test cases for views from AKModel plus some custom tests
     """
-    fixtures = ['model.json']
+
+    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')
+        (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', {}),
+        ("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},
+        {
+            "view": "admin:default-slots-editor",
+            "kwargs": {"event_slug": "kif42"},
+            "admin": True,
+        },
     ]
 
     def test_admin(self):
@@ -234,24 +301,32 @@ class ModelViewTests(BasicViewTests, TestCase):
         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', {}))
+                _, url = self._name_and_url(("admin:new_event_wizard_start", {}))
             elif model[1] == "room":
-                _, url = self._name_and_url(('admin:room-new', {}))
+                _, 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', {}))
+                _, 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")
+            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})
+                    (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")
+                self.assertEqual(
+                    response.status_code,
+                    200,
+                    msg=f"Edit form for model {model[1]} ({url}) broken",
+                )
 
     def test_wiki_export(self):
         """
@@ -260,17 +335,27 @@ class ModelViewTests(BasicViewTests, TestCase):
         """
         self.client.force_login(self.admin_user)
 
-        export_url = reverse_lazy("admin:ak_wiki_export", kwargs={'slug': 'kif42'})
+        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")
+                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")
+        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

@@ -4,9 +4,10 @@ from django.urls import include, path
 from rest_framework.routers import DefaultRouter
 
 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.manage import ExportSlidesView, PlanPublishView, PlanUnpublishView, \
+     PollPublishView, PollUnpublishView, 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
@@ -44,6 +45,11 @@ 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'),
 ]
@@ -103,6 +109,8 @@ def get_admin_urls_event(admin_site):
         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('poll/publish/', admin_site.admin_view(PollPublishView.as_view()), name="poll-publish"),
+        path('poll/unpublish/', admin_site.admin_view(PollUnpublishView.as_view()), name="poll-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()),

AKModel/views/manage.py

@@ -4,6 +4,7 @@ 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
@@ -58,7 +59,7 @@ class ExportSlidesView(EventSlugMixin, IntermediateAdminView):
             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 [(ak, next_aks) for ak, next_aks in zip_longest(ak_list, next_aks_list, fillvalue=[])]
+            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)
@@ -157,6 +158,31 @@ class PlanUnpublishView(IntermediateAdminActionView):
         self.entities.update(plan_published_at=None, plan_hidden=True)
 
 
+class PollPublishView(IntermediateAdminActionView):
+    """
+    Admin action view: Publish the preference poll of one or multitple event(s)
+    """
+    title = _('Publish preference poll')
+    model = Event
+    confirmation_message = _('Publish the poll(s) of:')
+    success_message = _('Preference poll published')
+
+    def action(self, form):
+        self.entities.update(poll_published_at=Now(), poll_hidden=False)
+
+
+class PollUnpublishView(IntermediateAdminActionView):
+    """
+    Admin action view: Unpublish the preference poll of one or multitple event(s)
+    """
+    title = _('Unpublish preference poll')
+    model = Event
+    confirmation_message = _('Unpublish the preference poll(s) of:')
+    success_message = _('Preference poll unpublished')
+
+    def action(self, form):
+        self.entities.update(poll_published_at=None, poll_hidden=True)
+
 class DefaultSlotEditorView(EventSlugMixin, IntermediateAdminView):
     """
     Admin view: Allow to edit the default slots of an event

AKModel/views/status.py

@@ -76,10 +76,15 @@ class EventRoomsWidget(TemplateStatusWidget):
     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": reverse_lazy("admin:room-import", kwargs={"event_slug": context["event"].slug}),
+                "url": import_room_url,
             }
         )
         return actions
@@ -147,6 +152,17 @@ class EventAKsWidget(TemplateStatusWidget):
                 },
             ]
         )
+        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
 
 

AKPlan/tests.py

 from django.test import TestCase
 
-from AKModel.tests import BasicViewTests
+from AKModel.tests.test_views import BasicViewTests
 
 
 class PlanViewTests(BasicViewTests, TestCase):

AKPlan/views.py

-from datetime import timedelta
+from datetime import datetime, timedelta
 
 from django.conf import settings
 from django.shortcuts import redirect
 from django.urls import reverse_lazy
-from django.utils.datetime_safe import datetime
-from django.views.generic import ListView, DetailView
+from django.views.generic import DetailView, ListView
 
-from AKModel.models import AKSlot, Room, AKTrack
 from AKModel.metaviews.admin import FilterByEventSlugMixin
+from AKModel.models import AKSlot, AKTrack, Room
 
 
 class PlanIndexView(FilterByEventSlugMixin, ListView):
@@ -152,7 +151,7 @@ class PlanTrackView(FilterByEventSlugMixin, DetailView):
         context = super().get_context_data(object_list=object_list, **kwargs)
         # Restrict AKSlot list to given track
         # while joining AK, room and category information to reduce the amount of necessary SQL queries
-        context["slots"] = AKSlot.objects.\
-            filter(event=self.event, ak__track=context['track']).\
+        context["slots"] = AKSlot.objects. \
+            filter(event=self.event, ak__track=context['track']). \
             select_related('ak', 'room', 'ak__category')
         return context

AKPlanning/settings.py

@@ -10,6 +10,7 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/2.2/ref/settings/
 """
 
+import decimal
 import os
 
 from django.utils.translation import gettext_lazy as _
@@ -38,6 +39,8 @@ INSTALLED_APPS = [
     'AKScheduling.apps.AkschedulingConfig',
     'AKPlan.apps.AkplanConfig',
     'AKOnline.apps.AkonlineConfig',
+    'AKPreference.apps.AkpreferenceConfig',
+    'AKSolverInterface.apps.AksolverinterfaceConfig',
     'AKModel.apps.AKAdminConfig',
     'django.contrib.auth',
     'django.contrib.contenttypes',
@@ -217,6 +220,15 @@ PLAN_MAX_HIGHLIGHT_UPDATE_SECONDS = 2 * 60 * 60
 DASHBOARD_SHOW_RECENT = True
 # How many entries max?
 DASHBOARD_RECENT_MAX = 25
+# How many events should be featured in the dashboard
+# (active events will always be featured, even if their number is higher than this threshold)
+DASHBOARD_MAX_FEATURED_EVENTS = 3
+
+# In the export to the solver we need to calculate the integer number
+# of discrete time slots covered by an AK. This is done by rounding
+# the 'exact' number up. To avoid 'overshooting' by 1
+# due to FLOP inaccuracies, we subtract this small epsilon before rounding.
+EXPORT_CEIL_OFFSET_EPS = decimal.Decimal(1e-4)
 
 # Registration/login behavior
 SIMPLE_BACKEND_REDIRECT_URL = "/user/"
@@ -224,7 +236,7 @@ LOGIN_REDIRECT_URL = SIMPLE_BACKEND_REDIRECT_URL
 
 # Content Security Policy
 CSP_DEFAULT_SRC = ("'self'",)
-CSP_SCRIPT_SRC = ("'self'", "'unsafe-inline'")
+CSP_SCRIPT_SRC = ("'self'", "'unsafe-inline'", "'unsafe-eval'")
 CSP_STYLE_SRC = ("'self'", "'unsafe-inline'", "fonts.googleapis.com")
 CSP_IMG_SRC = ("'self'", "data:")
 CSP_FRAME_SRC = ("'self'", )

AKPlanning/urls.py

@@ -37,3 +37,5 @@ if apps.is_installed("AKDashboard"):
     urlpatterns.append(path('', include('AKDashboard.urls', namespace='dashboard')))
 if apps.is_installed("AKPlan"):
     urlpatterns.append(path('', include('AKPlan.urls', namespace='plan')))
+if apps.is_installed("AKPreference"):
+    urlpatterns.append(path('', include('AKPreference.urls', namespace='poll')))