.

generic/views.py

@@ -24,6 +24,9 @@ from .forms import (
 
 from .models import Examination
 
+from django.db.models import Case, When
+
+
 # Create your views here.
 @login_required
 def create_examination(request):
@@ -52,8 +55,9 @@ def get_examination_id(request):
 
 
 class ExamViews(View, LoginRequiredMixin):
-    def __init__(self, exam, app, question_type, loadJsonAnswer):
+    def __init__(self, exam, question, app, question_type, loadJsonAnswer):
         self.Exam = exam
+        self.Question = question
         self.app_name = app
         self.question_type = question_type
         self.loadJsonAnswer = loadJsonAnswer
@@ -127,19 +131,39 @@ class ExamViews(View, LoginRequiredMixin):
 
             exam = get_object_or_404(self.Exam, pk=pk)
 
-            if request.POST.get("set_open_access") == "true":
-                state = True
-            else:
-                state = False
+            if "set_open_access" in request.POST:
+                if request.POST.get("set_open_access") == "true":
+                    state = True
+                else:
+                    state = False
 
-            questions_changed = []
-            for q in exam.exam_questions.all():
-                q.open_access = state
-                q.save()
-                questions_changed.append(q.pk)
+                questions_changed = []
+                for q in exam.exam_questions.all():
+                    q.open_access = state
+                    q.save()
+                    questions_changed.append(q.pk)
 
-            data = {"status": "success", "questions": questions_changed, "state": state}
-            return JsonResponse(data, status=200)
+                data = {"status": "success", "questions": questions_changed, "state": state}
+                return JsonResponse(data, status=200)
+
+            if "set_exam_order" in request.POST:
+                new_order = json.loads(request.POST.get("set_exam_order"))
+
+                preserved = Case(*[When(pk=pk, then=pos) for pos, pk in enumerate(new_order)])
+                objects = self.Question.objects.filter(pk__in=new_order).order_by(preserved)
+
+                if len(objects) != exam.exam_questions.count():
+                    data = {"status": "error, count does not match"}
+                    return JsonResponse(data, status=400)
+
+                exam.exam_questions.set(objects)
+                exam.save()
+                data = {"status": "success"}
+                return JsonResponse(data, status=200)
+
+
+            data = {"status": "error, unknown request"}
+            return JsonResponse(data, status=400)
         else:
             data = {"status": "error"}
             return JsonResponse(data, status=400)