add setting to supress room change messages

shiftregister/app/migrations/0014_alter_room_required_helpers.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.4 on 2025-05-16 22:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("app", "0013_room_send_reminders"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="room",
+            name="required_helpers",
+            field=models.IntegerField(default=1),
+        ),
+    ]

shiftregister/app/models.py

@@ -28,7 +28,43 @@ class Room(models.Model):
         return self.shift_set.filter(deleted=False)
 
 
+class ShiftManager(models.Manager):
+    def with_reg_count(self):
+        return (
+            self.get_queryset()
+            .annotate(
+                reg_count=Count(
+                    "shiftregistration",
+                    distinct=True,
+                    filter=Q(
+                        shiftregistration__state__in=(
+                            ShiftRegistration.RegState.REGISTERED,
+                            ShiftRegistration.RegState.CHECKED_IN,
+                        )
+                    ),
+                )
+            )
+            .select_related("room")
+        )
+
+
+class DisplayShiftManager(ShiftManager):
+    def get_queryset(self):
+        return (
+            super()
+            .get_queryset()
+            .select_related("event__calendar")
+            .filter(
+                Q(event__isnull=True) | Q(event__calendar__restricted=False),
+                deleted=False,
+            )
+        )
+
+
 class Shift(models.Model):
+    all_objects = ShiftManager()
+    objects = DisplayShiftManager()
+
     room = models.ForeignKey(Room, on_delete=models.RESTRICT)
     start_at = models.DateTimeField(db_index=True)
     duration = models.DurationField()
@@ -38,20 +74,6 @@ class Shift(models.Model):
     description = models.TextField(blank=True, default="")
     deleted = models.BooleanField(default=False, db_index=True)
 
-    def with_reg_count():
-        return Shift.objects.annotate(
-            reg_count=Count(
-                "shiftregistration",
-                distinct=True,
-                filter=Q(
-                    shiftregistration__state__in=(
-                        ShiftRegistration.RegState.REGISTERED,
-                        ShiftRegistration.RegState.CHECKED_IN,
-                    )
-                ),
-            )
-        ).select_related("room")
-
     def __str__(self):
         return f"{self.room.name}: {self.start_at}"
 
@@ -123,10 +145,10 @@ class Helper(models.Model):
                 )
                 |
                 # Case 2: End time falls between new shift's start and end
-                Q(shift_end__gt=shift.start_at, shift_end__lte=new_shift_end)
+                Q(shift_end__gt=shift.start_at, shift_end__lt=new_shift_end)
                 |
                 # Case 3: Completely encompasses the new shift
-                Q(shift__start_at__lte=shift.start_at, shift_end__gte=new_shift_end)
+                Q(shift__start_at__lt=shift.start_at, shift_end__gt=new_shift_end)
             )
             .first()
         )

shiftregister/app/signals.py

@@ -16,7 +16,7 @@ def notify_shift_changed(sender, **kwargs):
     if issubclass(sender, Shift):
         instance = kwargs["instance"]
         try:
-            prev = Shift.objects.get(pk=instance.id)
+            prev = Shift.all_objects.get(pk=instance.id)
         except Shift.DoesNotExist:
             return
         room_unchanged = (prev.room == instance.room) or global_preferences[

shiftregister/app/templates/login.html

@@ -0,0 +1,11 @@
+{% extends "helper_base.html" %}
+
+{% block title %}Registrierung{% endblock %}
+
+{% block content %}
+<p>Du solltest automatisch eingeloggt werden. Falls nicht, klicke bitte hier:</p>
+<a class="button is-link" href="{% url 'login_confirm' token %}">Login</a>
+<script>
+    window.location.href = "{% url 'login_confirm' token %}";
+</script>
+{% endblock %}

shiftregister/app/templates/shift.html

@@ -13,11 +13,13 @@
     <div class="notification">Diese Schicht wurde gelöscht.</div>
 {% endif %}
 {% if not can_register and not is_registered %}
-    {% if has_overlap %}
+{% if shift.restricted %}
+    <div class="notification is-warning">Diese Schicht kann nur von Teamis besetzt werden, daher kannst du dich nicht anmelden.</div>
+{% elif has_overlap %}
     <div class="notification is-warning">Du hast bereits eine überlappende Schicht zu dieser Zeit: <a href="{% url 'shift' overlapping_shift.id %}">{{ overlapping_shift.room.name }} ({{ overlapping_shift.start_at }})</a></div>
-    {% else %}
+{% else %}
     <div class="notification">Diese Schicht ist bereits besetzt.</div>
-    {% endif %}
+{% endif %}
 {% endif %}
     <div class="content">
         <p>

shiftregister/app/tests.py

@@ -44,11 +44,32 @@ class ShiftOverlapTests(TestCase):
         )
         self.assertIsNone(self.helper.has_overlapping_shift(shift_before))
 
+    def test_back_to_back_shifts(self):
+        """Test that a shift starting exactly when another ends is allowed"""
+        shift_after = Shift.objects.create(
+            room=self.room,
+            start_at=self.base_shift.start_at + self.base_shift.duration,
+            duration=timedelta(hours=1),
+            required_helpers=1,
+        )
+        self.assertIsNone(self.helper.has_overlapping_shift(shift_after))
+
+        # Also test the reverse case - registering for a shift that ends exactly when another begins
+        self.base_registration.delete()
+        ShiftRegistration.objects.create(
+            shift=shift_after,
+            helper=self.helper,
+            state=ShiftRegistration.RegState.REGISTERED,
+        )
+        self.assertIsNone(self.helper.has_overlapping_shift(self.base_shift))
+
     def test_no_overlap_after(self):
         """Test a shift that starts after the base shift ends"""
         shift_after = Shift.objects.create(
             room=self.room,
-            start_at=self.base_shift.start_at + timedelta(hours=4),
+            start_at=self.base_shift.start_at
+            + self.base_shift.duration
+            + timedelta(hours=1),
             duration=timedelta(hours=1),
             required_helpers=1,
         )

shiftregister/app/urls.py

@@ -5,6 +5,7 @@ from . import views
 urlpatterns = [
     path("", views.index, name="index"),
     path("l/<slug:token>", views.login, name="token_login"),
+    path("login_confirm/<slug:token>", views.login_confirm, name="login_confirm"),
     path("logout", views.logout, name="token_logout"),
     path("register", views.register, name="register"),
     path("asta", views.asta, name="asta"),

shiftregister/app/views.py

@@ -8,6 +8,7 @@ from django.core.cache import cache
 from django.db import transaction
 from django.db.models import Count, ExpressionWrapper, F, Q
 from django.db.models.fields import DateTimeField
+from django.db.models.functions import Coalesce
 from django.shortcuts import get_object_or_404, redirect, render
 from django.utils import timezone
 from dynamic_preferences.registries import global_preferences_registry
@@ -30,7 +31,7 @@ def index(request):
         event_end_at = global_preferences["helper__event_end_at"]
         days = (
             Shift.objects.filter(
-                deleted=False, start_at__gte=event_start_at, start_at__lte=event_end_at
+                start_at__gte=event_start_at, start_at__lte=event_end_at
             )
             .datetimes("start_at", "day")
             .all()
@@ -65,13 +66,12 @@ def index(request):
     # dont show shifts starting in <60 minutes?
     # currently only sorts by date
     free_shifts = (
-        Shift.with_reg_count()
+        Shift.objects.with_reg_count()
         .filter(
             help_wanted,
             start_at__gte=day + timedelta(hours=6),
             start_at__lte=day + timedelta(hours=30),
             start_at__gt=timezone.now(),
-            deleted=False,
         )
         .order_by("start_at")
         for day in days
@@ -98,7 +98,19 @@ def login(request, token):
             "Wir konnten dich nicht in unserer Datenbank finden. Bitte registriere dich neu, auch wenn du letztes Jahr bereits geholfen hast.",
         )
         return redirect("register")
+    return render(request, "login.html", {"token": token})
 
+
+def login_confirm(request, token):
+    try:
+        tk = LoginToken.objects.get(pk=token)
+    except LoginToken.DoesNotExist:
+        messages.add_message(
+            request,
+            messages.WARNING,
+            "Wir konnten dich nicht in unserer Datenbank finden. Bitte registriere dich neu, auch wenn du letztes Jahr bereits geholfen hast.",
+        )
+        return redirect("register")
     if not tk.helper.number_validated:
         tk.helper.number_validated = True
         tk.helper.save()
@@ -191,7 +203,12 @@ def register(request):
 
 @event_state
 def shift(request, shiftid):
-    shift = get_object_or_404(Shift.with_reg_count(), pk=shiftid)
+    shift = get_object_or_404(
+        Shift.all_objects.with_reg_count()
+        .select_related("event__calendar")
+        .annotate(restricted=Coalesce("event__calendar__restricted", False)),
+        pk=shiftid,
+    )
     helper = request.helper
     context = {
         "enable_asta": global_preferences["helper__enable_asta"],
@@ -201,15 +218,14 @@ def shift(request, shiftid):
         "shift": shift,
         "shift_form": EmptyForm,
     }
-
+    context["can_register"] = (
-    # this currently ignores date/time
-    request.session["last_seen_shift"] = shiftid
-    if (
         shift.required_helpers > shift.registration_count()
         or shift.required_helpers == 0
         and shift.room.required_helpers > shift.registration_count()
-    ):
+    ) and not shift.restricted
-        context["can_register"] = True
+
+    # this currently ignores date/time
+    request.session["last_seen_shift"] = shiftid
 
     if helper:
         context["helper"] = helper

shiftregister/fallback/distribution.py

@@ -0,0 +1,56 @@
+import math
+from random import random
+
+from django.db.models import Case, Count, F, Sum, When
+
+from shiftregister.importer.models import Event
+
+
+class Bucket:
+    def __init__(self, selector, sub_buckets=[]):
+        if not isinstance(sub_buckets, list) or not all(
+            map(lambda b: isinstance(b, Bucket), sub_buckets)
+        ):
+            raise ValueError("sub_buckets must be a list of instances of class Bucket")
+
+        self.selector = selector
+        self.sub_buckets = sub_buckets
+
+    def __iter__(self):
+        for bucket in self.sub_buckets:
+            yield bucket.selector, bucket
+
+    def has_sub_buckets(self):
+        return len(self.sub_buckets) > 0
+
+
+def distribute(total_slots, total_assignments, pool, qs=None):
+    if not isinstance(pool, Bucket):
+        raise ValueError("pool must be an instance of class Bucket")
+
+    qs = (qs or Event.objects).filter(pool.selector)
+
+    for selector, bucket in pool:
+        bucket_qs = qs.filter(selector).annotate(
+            real_required_helpers=Case(
+                When(required_helpers=0, then=F("room__required_helpers")),
+                default=F("required_helpers"),
+            )
+        )
+
+        bucket_slots = bucket_qs.aggregate(sum=Sum("real_required_helpers"))["sum"]
+
+        extra_chance, bucket_assignments = math.modf(
+            bucket_slots / total_slots * total_assignments
+        )
+        bucket_assignments = int(bucket_assignments)
+        if extra_chance > random():
+            bucket_assignments += 1
+
+        if bucket.has_sub_buckets():
+            yield from distribute(bucket_slots, bucket_assignments, bucket, qs)
+        else:
+            yield bucket_qs, bucket_assignments
+
+        total_slots -= bucket_slots
+        total_assignments -= bucket_assignments

shiftregister/fallback/models.py

@@ -12,6 +12,8 @@ from django.utils import timezone
 
 from shiftregister.importer.models import *
 
+from .distribution import Bucket, distribute
+
 
 def generate_id():
     return int.from_bytes(secrets.token_bytes(3), byteorder="big")
@@ -40,8 +42,38 @@ class TeamMember(models.Model):
         return urlsafe_b64encode(self.id.to_bytes(3, byteorder="big")).decode("utf-8")
 
     def assign_random_shifts(self):
+        if self.fallback_shifts.count() != 0:
+            return
+
         needs_fallback = Q(deleted=False, calendar__needs_fallback=True)
 
+        total_slots = (
+            Event.objects.filter(needs_fallback)
+            .annotate(
+                real_required_helpers=Case(
+                    When(required_helpers=0, then=F("room__required_helpers")),
+                    default=F("required_helpers"),
+                ),
+            )
+            .aggregate(sum=Sum("real_required_helpers"))["sum"]
+        )
+
+        number_of_team_members = TeamMember.objects.count()
+        quota = global_preferences["helper__fallback_quota"]
+        max_shifts_per_member = total_slots / max(number_of_team_members * quota, 1)
+
+        active_team_members = (
+            TeamMember.objects.filter(~Q(fallback_shifts=None)).count() + 1
+        )
+        shifts_per_member = total_slots / active_team_members
+
+        extra_chance, total_assignments = math.modf(
+            min(max_shifts_per_member, shifts_per_member)
+        )
+        total_assignments = int(total_assignments)
+        if extra_chance > random():
+            total_assignments += 1
+
         current_tz = timezone.get_current_timezone()
         # create a datetime combining the last date having fallback shifts
         # after 20:00 with the time 20:00 in the current timezone
@@ -56,47 +88,38 @@ class TeamMember(models.Model):
         is_last_night = Q(start_at__gte=last_night)
         is_night_shift = Q(start_at__hour__gte=21) | Q(start_at__hour__lte=10)
 
-        if self.fallback_shifts.count() != 0:
+        is_restricted = Q(calendar__restricted=True)
-            return
 
-        day_shifts = ~is_night_shift & ~is_last_night & needs_fallback
+        day_shifts = Bucket(~is_night_shift & ~is_last_night)
-        night_shifts = is_night_shift & ~is_last_night & needs_fallback
+        night_shifts = Bucket(is_night_shift & ~is_last_night)
-        shit_shifts = is_last_night & needs_fallback
+        shit_shifts = Bucket(is_last_night)
 
-        self._assign_from_bucket(day_shifts)
+        restricted_buckets = [
-        self._assign_from_bucket(night_shifts)
+            Bucket(Q(calendar=calendar))
-        self._assign_from_bucket(shit_shifts)
+            for calendar in Calendar.objects.filter(
+                needs_fallback=True, restricted=True
+            )
+        ]
 
-    def _assign_from_bucket(self, bucket_selector):
+        for bucket, assignments in distribute(
-        bucket = Event.objects.filter(bucket_selector).annotate(
+            total_slots,
-            fallback_count=Count("fallbackassignment"),
+            total_assignments,
-            real_required_helpers=Case(
+            Bucket(
-                When(required_helpers=0, then=F("room__required_helpers")),
+                needs_fallback,
-                default=F("required_helpers"),
+                [
+                    Bucket(~is_restricted, [day_shifts, night_shifts, shit_shifts]),
+                    Bucket(is_restricted, restricted_buckets),
+                ],
             ),
-        )
+        ):
+            self._assign_from_bucket(bucket, assignments)
+
+    def _assign_from_bucket(self, bucket, shift_count):
+        bucket = bucket.annotate(fallback_count=Count("fallbackassignment"))
         free_bucket = bucket.filter(fallback_count__lt=F("real_required_helpers"))
 
         total_slot_count = bucket.aggregate(sum=Sum("real_required_helpers"))["sum"]
 
-        quota = global_preferences["helper__fallback_quota"]
-        number_of_team_members = TeamMember.objects.count()
-        max_shifts_per_member = total_slot_count / max(
-            number_of_team_members * quota, 1
-        )
-
-        active_team_members = (
-            TeamMember.objects.filter(~Q(fallback_shifts=None)).count() + 1
-        )
-        shifts_per_member = total_slot_count / active_team_members
-
-        extra_chance, shift_count = math.modf(
-            min(max_shifts_per_member, shifts_per_member)
-        )
-        shift_count = int(shift_count)
-        if extra_chance > random():
-            shift_count += 1
-
         blocked_times = []
         for shift in self.fallback_shifts.all():
             blocked_times.append(
@@ -140,9 +163,7 @@ class TeamMember(models.Model):
         while shifts_needed > 0:
             # this is a bit more complex and uses subqueries and id lists because we want to reuse the query selector for events.
             # maybe there is a good way to transform q-expressions to add prefixes to fields but for now this has to work
-            candidate_shift_ids = Event.objects.filter(bucket_selector).values(
+            candidate_shift_ids = bucket.values("shift_ptr_id")
-                "shift_ptr_id"
-            )
             relevant_assignments = FallbackAssignment.objects.filter(
                 shift_id__in=candidate_shift_ids
             )

shiftregister/importer/admin.py

@@ -10,5 +10,5 @@ def update_calendar(modeladmin, request, queryset):
 
 @admin.register(Calendar)
 class CalendarAdmin(admin.ModelAdmin):
-    list_display = ("name", "url", "needs_fallback", "has_errors")
+    list_display = ("name", "url", "needs_fallback", "restricted", "has_errors")
     actions = (update_calendar,)

shiftregister/importer/migrations/0005_calendar_restricted.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.4 on 2025-05-16 22:17
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("importer", "0004_calendar_name"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="calendar",
+            name="restricted",
+            field=models.BooleanField(default=False),
+        ),
+    ]

shiftregister/importer/models.py

@@ -8,6 +8,7 @@ class Calendar(models.Model):
     needs_fallback = models.BooleanField(default=False, editable=True)
     has_errors = models.BooleanField(default=False, editable=False)
     name = models.CharField(max_length=255, null=True, blank=True)
+    restricted = models.BooleanField(default=False)
 
     def update(self):
         # break circular import
@@ -18,5 +19,7 @@ class Calendar(models.Model):
 
 
 class Event(Shift):
+    objects = models.Manager()
+
     uuid = models.UUIDField(primary_key=True, editable=False)
     calendar = models.ForeignKey(Calendar, on_delete=models.CASCADE)

shiftregister/metrics/views.py

@@ -35,7 +35,7 @@ def metrics(request):
                     ),
                     (
                         "fallback_shifts_full",
-                        Shift.with_reg_count()
+                        Shift.objects.with_reg_count()
                         .annotate(
                             real_required_helpers=Case(
                                 When(
@@ -46,7 +46,6 @@ def metrics(request):
                             fallbackassignment_count=Count("fallbackassignment"),
                         )
                         .filter(
-                            deleted=False,
                             reg_count__gte=F("real_required_helpers"),
                             fallbackassignment_count__gt=0,
                         )
@@ -96,16 +95,14 @@ def metrics(request):
                     ),
                     (
                         "helpers_required",
-                        Shift.objects.filter(deleted=False)
+                        Shift.objects.annotate(
-                        .annotate(
                             real_required_helpers=Case(
                                 When(
                                     required_helpers=0, then=F("room__required_helpers")
                                 ),
                                 default=F("required_helpers"),
                             )
-                        )
+                        ).aggregate(sum=Sum("real_required_helpers"))["sum"]
-                        .aggregate(sum=Sum("real_required_helpers"))["sum"]
                         or 0,
                     ),
                     (
@@ -124,15 +121,15 @@ def metrics(request):
                     *(
                         (
                             f'shifts{{room="{room.name}"}}',
-                            Shift.objects.filter(deleted=False, room=room).count(),
+                            Shift.objects.filter(room=room).count(),
                         )
                         for room in Room.objects.all()
                     ),
                     *(
                         (
                             f'shifts_occupied{{room="{room.name}"}}',
-                            Shift.with_reg_count()
+                            Shift.objects.with_reg_count()
-                            .filter(deleted=False, reg_count__gte=1, room=room)
+                            .filter(reg_count__gte=1, room=room)
                             .count(),
                         )
                         for room in Room.objects.all()
@@ -140,7 +137,7 @@ def metrics(request):
                     *(
                         (
                             f'shifts_full{{room="{room.name}"}}',
-                            Shift.with_reg_count()
+                            Shift.objects.with_reg_count()
                             .annotate(
                                 real_required_helpers=Case(
                                     When(
@@ -151,7 +148,7 @@ def metrics(request):
                                 )
                             )
                             .filter(
-                                deleted=False,
+                                reg_count__gt=0,
                                 reg_count__gte=F("real_required_helpers"),
                                 room=room,
                             )

shiftregister/signage/views.py

@@ -33,16 +33,16 @@ def public_dashboard(request):
         )
 
     num_free_shifts = (
-        Shift.with_reg_count()
+        Shift.objects.with_reg_count()
-        .filter(help_wanted, deleted=False, start_at__gte=timezone.now())
+        .filter(help_wanted, start_at__gte=timezone.now())
         .count()
     )
     if num_free_shifts > 0:
         facts.append(("Zu übernehmende Schichten", num_free_shifts))
 
     next_free_shifts = (
-        Shift.with_reg_count()
+        Shift.objects.with_reg_count()
-        .filter(help_wanted, start_at__gt=timezone.now(), deleted=False)
+        .filter(help_wanted, start_at__gt=timezone.now())
         .order_by("start_at")[:4]
     )
 
@@ -79,7 +79,7 @@ def team_dashboard(request):
         day = today
 
     team_shifts = (
-        Shift.with_reg_count()
+        Shift.all_objects.with_reg_count()
         .annotate(
             end_at=ExpressionWrapper(
                 F("start_at") + F("duration"), output_field=models.DateTimeField()

shiftregister/team/templates/checkin_list.html

@@ -21,7 +21,7 @@
             <td>
                 <a href="{% url 'team:helper' reg.helper.pk %}">
                     {{ reg.helper.name }} ({{ reg.helper.phone|stringformat:"s"|slice:"-3:" }})
-                    {% if not reg.helper.asta_confirmed %}
+                    {% if asta_required and not reg.helper.asta_confirmed %}
                         <span class="tag is-danger">AStA</span>
                     {% endif %}
                 </a>

shiftregister/team/views.py

@@ -11,6 +11,7 @@ from django.shortcuts import get_object_or_404, redirect, render
 from django.utils import timezone
 from django.views.generic import DetailView, ListView
 from django.views.generic.edit import FormMixin
+from dynamic_preferences.registries import global_preferences_registry
 
 from .forms import HELPER_FILTERS, BulkMessage, HelperMessage, HelperShift
 from .models import (
@@ -23,7 +24,7 @@ from .models import (
     ShiftRegistration,
 )
 
-# Create your views here.
+global_preferences = global_preferences_registry.manager()
 
 
 def index(request):
@@ -43,7 +44,7 @@ def shift_overview(request):
 
     context = {}
     context["running_shifts"] = (
-        Shift.with_reg_count()
+        Shift.all_objects.with_reg_count()
         .prefetch_related("event__calendar")
         .annotate(
             checkin_count=Count(
@@ -64,7 +65,7 @@ def shift_overview(request):
     )
 
     context["next_shifts"] = (
-        Shift.with_reg_count()
+        Shift.all_objects.with_reg_count()
         .prefetch_related("event__calendar")
         .annotate(checkin_count=checkin_count)
         .filter(
@@ -79,7 +80,7 @@ def shift_overview(request):
     context["next_shifts_per_room"] = filter(
         lambda x: x is not None,
         (
-            Shift.with_reg_count()
+            Shift.all_objects.with_reg_count()
             .prefetch_related("event__calendar")
             .filter(room=room, start_at__gt=timezone.now(), deleted=False)
             .order_by("start_at")
@@ -98,7 +99,10 @@ def add_helper_shift(self):
 @login_required
 def shift_detail(request, pk):
     shift = get_object_or_404(
-        Shift.with_reg_count().prefetch_related("shiftregistration_set__helper"), pk=pk
+        Shift.all_objects.with_reg_count().prefetch_related(
+            "shiftregistration_set__helper"
+        ),
+        pk=pk,
     )
     form = HelperShift()
     if request.method == "POST":
@@ -216,7 +220,7 @@ class ShiftList(LoginRequiredMixin, ListView):
     title = "Alle Schichten"
 
     def get_queryset(self):
-        return Shift.with_reg_count()
+        return Shift.all_objects.with_reg_count()
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
@@ -235,7 +239,7 @@ class FreeShiftList(ShiftList):
             required_helpers=0
         ) & Q(room__required_helpers__gt=F("reg_count"))
         return (
-            Shift.with_reg_count()
+            Shift.all_objects.with_reg_count()
             .annotate(
                 end_at=ExpressionWrapper(
                     F("start_at") + F("duration"),
@@ -264,7 +268,7 @@ class RoomShiftList(ShiftList):
             required_helpers=0
         ) & Q(room__required_helpers__gt=F("reg_count"))
         return (
-            Shift.with_reg_count()
+            Shift.all_objects.with_reg_count()
             .filter(
                 deleted=False,
                 room=room,
@@ -288,6 +292,7 @@ class CheckinList(LoginRequiredMixin, ListView):
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
+        context["asta_required"] = global_preferences["helper__enable_asta"]
         context["page_range"] = context["paginator"].get_elided_page_range(
             context["page_obj"].number
         )

texts.md

@@ -7,6 +7,11 @@ Die Schichten für das Kontaktfestival sind online: https://helfen.kntkt.de
 Ignoriere diese SMS, um keine weiteren von uns zu erhalten.
 ```
 
+```
+Die Schichten für das Kontaktfestival sind online: https://helfen.kntkt.de
+Du erhältst diese SMS, da du als Helfi registriert bist.
+```
+
 ## Teamschichten
 
 ```