improve exam group management

longs/views.py

@@ -26,6 +26,7 @@ from django.http import HttpResponseRedirect, HttpResponse
 
 from .forms import (
     ExamAuthorForm,
+    ExamGroupsForm,
     ExamMarkerForm,
     LongForm,
     LongSeriesForm,
@@ -81,6 +82,7 @@ from generic.views import (
     ExamCloneMixin,
     ExamCreateBase,
     ExamDeleteBase,
+    ExamGroupsUpdateBase,
     ExamUpdateBase,
     ExamViews,
     SeriesImagesZipViewBase,
@@ -991,6 +993,10 @@ class ExamMarkersUpdate(
 
     template_name = "markers_form.html"
 
+class ExamGroupsUpdate(ExamGroupsUpdateBase):
+    model = Exam
+    form_class = ExamGroupsForm
+
 
 # class ExamViewSet(RevisionMixin, viewsets.ModelViewSet):
 #    queryset = Exam.objects.all().order_by("name")