tidy up the marker changes

rapids/migrations/0012_alter_exam_markers.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.0.2 on 2024-08-05 10:09
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('rapids', '0011_exam_markers'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='exam',
+            name='markers',
+            field=models.ManyToManyField(blank=True, help_text='Authorised markers for the exam', null=True, related_name='rapid_exam_markers', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

rapids/models.py

@@ -632,6 +632,7 @@ class Exam(ExamBase):
     markers = models.ManyToManyField(
         settings.AUTH_USER_MODEL,
         blank=True,
+        null=True,
         help_text="Authorised markers for the exam",
         related_name="rapid_exam_markers",
     )

rapids/views.py

@@ -578,6 +578,9 @@ def mark_review(request, exam_pk, sk):
 def mark(request, exam_pk, sk, unmarked_exam_answers_only=True, review=False):
     exam = get_object_or_404(Exam, pk=exam_pk)
 
+    if not GenericExamViews.check_user_marker_access(request.user, exam_pk):
+        raise PermissionDenied
+
     if not exam.exam_mode:
         raise Http404("Packet not in exam mode")