allow ordering of case collections

generic/views.py

@@ -42,7 +42,7 @@ from django_filters.views import FilterView
 from django_filters import FilterSet, OrderingFilter, ModelMultipleChoiceFilter
 from django_tables2.views import SingleTableMixin
 from reversion.views import RevisionMixin
-from atlas.models import CaseCollection
+from atlas.models import CaseCollection, CaseDetail
 from generic.decorators import user_is_cid_user_manager
 from generic.filters import CidUserFilter, ExaminationFilter
 
@@ -1195,7 +1195,14 @@ class ExamViews(View, LoginRequiredMixin):
                 #    data = {"status": "error, count does not match"}
                 #    return JsonResponse(data, status=400)
 
-                exam.exam_questions.set(objects)
+                if self.app_name == "atlas":
+                    exam.cases.set(objects)
+                    for n, case in enumerate(objects):
+                        case_detail = CaseDetail.objects.get(case=case, collection=exam)
+                        case_detail.sort_order = n
+                        case_detail.save()
+                else:
+                    exam.exam_questions.set(objects)
                 exam.save()
                 data = {"status": "success"}
                 return JsonResponse(data, status=200)