Log project changes during approvals

claims/models.py

@@ -122,6 +122,7 @@ class ClaimLog(models.Model):
         CREATED = "created", _("Submitted")
         STATUS_CHANGED = "status_changed", _("Status changed")
         MARKED_PAID = "marked_paid", _("Marked as paid")
+        PROJECT_CHANGED = "project_changed", _("Project changed")
 
     claim = models.ForeignKey(Claim, related_name="logs", on_delete=models.CASCADE)
     action = models.CharField(max_length=32, choices=Action.choices)
@@ -147,4 +148,3 @@ class ClaimLog(models.Model):
 
     def __str__(self):
         return f"{self.get_action_display()} ({self.created_at:%Y-%m-%d %H:%M})"
-

claims/tests.py

@@ -9,7 +9,7 @@ from django.urls import reverse
 from django.utils import timezone
 
 from .forms import ClaimDecisionForm
-from .models import Claim, Project
+from .models import Claim, ClaimLog, Project
 from .validators import validate_receipt_file
 from .views import SubmitClaimView
 
@@ -144,3 +144,6 @@ class DashboardViewTests(TestCase):
         self.assertEqual(response.status_code, 200)
         claim.refresh_from_db()
         self.assertEqual(claim.project, project_new)
+        self.assertTrue(
+            claim.logs.filter(action=ClaimLog.Action.PROJECT_CHANGED, note__icontains="Project updated").exists()
+        )

claims/views.py

@@ -221,6 +221,12 @@ class ClaimDashboardView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
             to_status=claim.status,
             note=decision_note,
         )
+        if project_changed:
+            claim.add_log(
+                action=ClaimLog.Action.PROJECT_CHANGED,
+                performed_by=request.user,
+                note=_("Project updated during decision."),
+            )
         return redirect(request.get_full_path())
 
     def _handle_payment(self, request):