shiftregister/fallback/admin.py

@@ -25,6 +25,7 @@ class FallbackAssignmentInline(admin.TabularInline):
     model = FallbackAssignment
     ordering = ("shift__start_at",)
     readonly_fields = ("shift",)
+    fk_name = "team_member"
 
 
 @admin.register(TeamMember)

shiftregister/fallback/migrations/0009_fallbackassignment_traded_to.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.0.4 on 2025-05-14 11:39
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("fallback", "0008_alter_teammember_comment"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="fallbackassignment",
+            name="traded_to",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="received_trades",
+                to="fallback.teammember",
+            ),
+        ),
+    ]

shiftregister/fallback/models.py

@@ -21,18 +21,19 @@ class TeamMember(models.Model):
     id = models.IntegerField(default=generate_id, editable=False, primary_key=True)
     name = models.CharField(max_length=100)
     comment = models.CharField(max_length=100, blank=True, default="")
-    fallback_shifts = models.ManyToManyField(Shift, through="FallbackAssignment")
+    fallback_shifts = models.ManyToManyField(
+        Shift, through="FallbackAssignment", through_fields=("team_member", "shift")
+    )
 
     def url(self):
         return "https://helfen.kntkt.de" + reverse(
             "my_fallback_shifts",
-            kwargs={
-                "team_member_id": urlsafe_b64encode(
-                    self.id.to_bytes(3, byteorder="big")
-                ).decode("utf-8")
-            },
+            kwargs={"team_member_id": self.url_id()},
         )
 
+    def url_id(self):
+        return urlsafe_b64encode(self.id.to_bytes(3, byteorder="big")).decode("utf-8")
+
     def assign_random_shifts(self):
         needs_fallback = Q(deleted=False, calendar__needs_fallback=True)
 
@@ -199,6 +200,15 @@ class FallbackAssignment(models.Model):
     shift = models.ForeignKey(Shift, on_delete=models.CASCADE)
     team_member = models.ForeignKey(TeamMember, on_delete=models.CASCADE)
     was_full = models.BooleanField(default=False)
+    traded_to = models.ForeignKey(
+        TeamMember,
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name="received_trades",
+    )
 
     def __str__(self):
+        if self.traded_to:
+            return f"{self.shift} {self.team_member.name} -> {self.traded_to.name}"
         return f"{self.shift} {self.team_member.name}"

shiftregister/fallback/templates/my_fallback_shifts.html

@@ -9,6 +9,22 @@
 <div class="content">
     <a href="{% url 'pages:view' 'team_faq' %}">Häufig gestellte Fragen zu Teamschichten</a>
 </div>
+
+<div class="box">
+    <h4 class="subtitle">Schicht übernehmen</h4>
+    <form method="POST">
+        {% csrf_token %}
+        <div class="field has-addons">
+            <div class="control">
+                <input class="input" type="number" name="assignment_id" placeholder="Assignment ID" required>
+            </div>
+            <div class="control">
+                <button type="submit" name="take_shift" class="button is-info">Übernehmen/Entfernen</button>
+            </div>
+        </div>
+    </form>
+</div>
+
 {% if assignments %}
 {% if is_draw %}
 <pre class="mb-5 select_all">Hallo {{ team_member.name }}, hier deine Teamschichten für das Festival:
@@ -26,6 +42,7 @@ Diese Schichtzuteilung wurde maschinell erstellt und ist auch ohne Unterschrift
 <table class="table">
     <thead>
         <tr>
+            <th>Tausch-ID</th>
             <th>Wann</th>
             <th>Wie lange</th>
             <th>Wo</th>
@@ -38,13 +55,19 @@ Diese Schichtzuteilung wurde maschinell erstellt und ist auch ohne Unterschrift
 {% for assignment in assignments %}
 {% with assignment.shift as shift %}
         <tr{% if shift.registration_count == shift.required_helpers|default:shift.room.required_helpers or assignment.was_full %} class="has-text-grey" style="text-decoration: line-through;"{% endif %}>
+            <td>{{ assignment.id }} {% if assignment.traded_to %}*{% endif %}</td>
             <td>{{ shift.start_at }}</td>
             <td>{{ shift.duration|duration }}</td>
             <td>{{ shift.room.name }} </td>
             <td>{{ shift.registration_count }}/{{ shift.required_helpers|default:shift.room.required_helpers }}</td>
             <td>
-{% for assignment in shift.fallbackassignment_set.all %}
-                {{ assignment.team_member.name }}{% if not forloop.last %}, {% endif %}
+{% for fa in shift.fallbackassignment_set.all %}
+    {% if fa.traded_to %}
+        {{ fa.traded_to.name }}
+    {% else %}
+        {{ fa.team_member.name }}
+    {% endif %}
+    {% if not forloop.last %}, {% endif %}
 {% endfor %}
             </td>
             <td>
@@ -61,7 +84,7 @@ Diese Schichtzuteilung wurde maschinell erstellt und ist auch ohne Unterschrift
 {% if user.is_authenticated %}
 <form method="POST">
     {% csrf_token %}
-    <button class="button is-success" type="submit">Schichten zulosen</button>
+    <button class="button is-success" type="submit" name="draw_shifts">Schichten zulosen</button>
 </form>
 {% else %}
 Noch keine Schichten zugewiesen, bitte wende dich an den Infopoint.

shiftregister/fallback/views.py

@@ -1,11 +1,13 @@
 from base64 import urlsafe_b64decode
 
+from django.contrib import messages
 from django.contrib.auth.decorators import login_required
-from django.db.models import Count
+from django.db.models import Count, Q
 from django.http import HttpResponse
-from django.shortcuts import get_object_or_404, render
+from django.shortcuts import get_object_or_404, redirect, render
+from django.urls import reverse
 
-from shiftregister.fallback.models import TeamMember
+from shiftregister.fallback.models import FallbackAssignment, TeamMember
 
 # Create your views here.
 
@@ -22,15 +24,44 @@ def my_fallback_shifts(request, team_member_id):
 
     is_draw = False
     if request.method == "POST":
-        team_member.assign_random_shifts()
-        is_draw = True
+        if "draw_shifts" in request.POST:
+            team_member.assign_random_shifts()
+            is_draw = True
+        elif "take_shift" in request.POST:
+            assignment_id = request.POST.get("assignment_id")
+            try:
+                assignment = FallbackAssignment.objects.get(pk=assignment_id)
+                if assignment.team_member == team_member:
+                    assignment.traded_to = None
+                    messages.success(request, f"Schicht erfolgreich zurückgenommen")
+                elif assignment.traded_to == team_member:
+                    assignment.traded_to = None
+                    messages.success(request, f"Schicht erfolgreich zurückgegeben")
+                else:
+                    assignment.traded_to = team_member
+                    messages.success(request, f"Schicht erfolgreich übernommen")
+                assignment.save()
+                return redirect(
+                    reverse(
+                        "my_fallback_shifts",
+                        kwargs={"team_member_id": team_member.url_id()},
+                    )
+                )
+            except FallbackAssignment.DoesNotExist:
+                messages.error(request, "Ungültige Schicht-ID")
+
+    assignments = (
+        FallbackAssignment.objects.filter(
+            Q(team_member=team_member, traded_to__isnull=True)
+            | Q(traded_to=team_member)
+        )
+        .prefetch_related("shift", "traded_to", "team_member")
+        .order_by("shift__start_at")
+    )
 
     context = {
         "team_member": team_member,
-        "assignments": team_member.fallbackassignment_set.order_by(
-            "shift__start_at"
-        ).all(),
-        # "shifts": team_member.fallback_shifts.order_by("start_at").all(),
+        "assignments": assignments,
         "is_draw": is_draw,
     }
     return render(request, "my_fallback_shifts.html", context)

shiftregister/signage/templates/team_dashboard.html

@@ -18,7 +18,18 @@
                 <tr>
                     <td>{{ shift.room.name }}</td>
                     <td>{{ shift.start_at }}</td>
-                    <td>{% for fa in shift.fallbackassignment_set.all %}{% if not fa.was_full %}{{ fa.team_member.name }}{% if not forloop.last %}, {% endif %}{% endif %}{% endfor %}</td>
+                    <td>
+                    {% for fa in shift.fallbackassignment_set.all %}
+                        {% if not fa.was_full %}
+                            {% if fa.traded_to %}
+                                {{ fa.traded_to.name }} ({{ fa.id }})
+                            {% else %}
+                                {{ fa.team_member.name }} ({{ fa.id }})
+                            {% endif %}
+                            {% if not forloop.last %}, {% endif %}
+                        {% endif %}
+                    {% endfor %}
+                    </td>
                 </tr>
 {% empty %}
                 <tr>

shiftregister/team/templates/shift_detail.html

@@ -59,7 +59,11 @@
 {% for fallback in shift.event.fallbackassignment_set.all %}
     <div class="column is-one-quarter">
         <div class="box{% if fallback.was_full %} has-text-grey" style="text-decoration: line-through;{% endif %}">
-            {{ fallback.team_member.name }}
+            {% if fallback.traded_to %}
+                {{ fallback.traded_to.name }}
+            {% else %}
+                {{ fallback.team_member.name }}
+            {% endif %}
         </div>
     </div>
 {% endfor %}