allow completion of sbas / physics exams

sbas/views.py

@@ -116,6 +116,17 @@ def exam_start(request, pk):
         {"exam": exam, "valid_user": exam.check_logged_in_user(request)},
     )
 
+def exam_complete(request, pk, cid=None, passcode=None):
+    exam = get_object_or_404(Exam, pk=pk)
+
+    exam.check_user_can_take(cid, passcode, request.user)
+
+    cid_user_exam = exam.get_or_create_cid_user_exam(cid=cid, user_user=request.user)
+
+    cid_user_exam.complete_exam()
+
+    return HttpResponse("<div role='alert' class='alert alert-info'>Exam completed</div>")
+
 
 def exam_take_overview(request, pk, cid=None, passcode=None):
     exam = get_object_or_404(Exam, pk=pk)
@@ -195,7 +206,7 @@ def exam_take(request, pk: int, sk: int, cid: int = None, passcode: str = None):
             form = UserAnswerForm(request.POST, instance=answer)
         else:
             form = UserAnswerForm(request.POST)
-        if form.is_valid():
+        if form.is_valid() and not exam.publish_results and not cid_user_exam.completed:
             answer = form.save(commit=False)
 
             if cid is not None: