feat: added ticket history

ticketsystem/models.py

@@ -36,3 +36,16 @@ class Comment(models.Model):
 
     def __str__(self):
         return f"Kommentar von {self.author} zu Ticket #{self.ticket.id}"
+
+
+class TicketHistory(models.Model):
+    ticket = models.ForeignKey("Ticket", on_delete=models.CASCADE, related_name="history")
+    changed_by = models.ForeignKey(User, on_delete=models.SET_NULL, null=True)
+    changed_at = models.DateTimeField(auto_now_add=True)
+
+    field = models.CharField(max_length=100)  # z. B. "status" oder "description"
+    old_value = models.TextField(null=True, blank=True)
+    new_value = models.TextField(null=True, blank=True)
+
+    class Meta:
+        ordering = ["-changed_at"]

ticketsystem/templates/ticketsystem/detail.html

@@ -132,5 +132,22 @@
         <button type="submit">Absenden</button>
     </form>
     {% endif %}
+    <div style="margin-top: 3rem;">
+  <h2>🕓 Bearbeitungshistorie</h2>
+  {% if ticket.history.exists %}
+    <ul style="list-style: none; padding: 0;">
+      {% for entry in ticket.history.all %}
+        <li style="margin-bottom: 1rem; background-color: #f9f9f9; border-left: 4px solid #ccc; padding: 0.5rem 1rem;">
+          <strong>{{ entry.changed_by.username }}</strong>
+          hat <code>{{ entry.field }}</code> geändert:<br>
+          <em>{{ entry.old_value }}</em> → <strong>{{ entry.new_value }}</strong><br>
+          <small>am {{ entry.changed_at|date:"d.m.Y H:i" }}</small>
+        </li>
+      {% endfor %}
+    </ul>
+  {% else %}
+    <p><em>Keine Änderungen bisher.</em></p>
+  {% endif %}
+</div>
 </div>
 {% endblock %}

ticketsystem/views.py

@@ -10,7 +10,7 @@ from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib import messages
 from django.shortcuts import redirect
 
-from .models import Ticket
+from .models import Ticket, TicketHistory
 
 
 class HomeView(TemplateView):
@@ -63,6 +63,7 @@ class TicketDetailView(FormMixin, DetailView):
         context["form"] = self.get_form()
         return context
 
+
 class TicketCreateView(CreateView):
     model = Ticket
     fields = ["title", "description", "priority", "assigned_to"]  # user & status wird automatisch gesetzt
@@ -74,6 +75,7 @@ class TicketCreateView(CreateView):
         form.instance.status = "open"  # Neues Ticket beginnt immer als "offen"
         return super().form_valid(form)
 
+
 class TicketUpdateView(LoginRequiredMixin, UpdateView):
     model = Ticket
     fields = ["title", "description", "status", "priority", "assigned_to"]
@@ -90,3 +92,24 @@ class TicketUpdateView(LoginRequiredMixin, UpdateView):
 
     def get_queryset(self):
         return Ticket.objects.all()  # Optional: Nur eigene Tickets bearbeiten lassen?
+
+    def form_valid(self, form):
+        ticket = form.instance
+        original = Ticket.objects.get(pk=ticket.pk)
+
+        response = super().form_valid(form)  # Speichert das Ticket
+
+        tracked_fields = ["status", "description"]
+        for field in tracked_fields:
+            if field in form.changed_data:
+                old_value = getattr(original, field)
+                new_value = form.cleaned_data.get(field)
+                TicketHistory.objects.create(
+                    ticket=ticket,
+                    changed_by=self.request.user,
+                    field=field,
+                    old_value=str(old_value),
+                    new_value=str(new_value),
+                )
+
+        return response