begin correct sorting of exams/collection

atlas/views.py

@@ -387,8 +387,12 @@ def add_case_to_collection(request, collection_id):
 
     if request.method == "POST":
         case = get_object_or_404(Case, pk=request.POST["case"])
+
+        if case in collection.cases.all():
+            return HttpResponse("Case already in collection")
         print(case)
         collection.cases.add(case)
+        collection.order_cases()
         return HttpResponse("Case added to collection")
 
 
@@ -1380,12 +1384,13 @@ def collection_viva_series(request, pk, series_id):
 def collection_detail(request, pk):
     collection = get_object_or_404(CaseCollection, pk=pk)
 
-    cases = collection.cases.all().order_by("casedetail__sort_order")
+    #cases = collection.cases.all().order_by("casedetail__sort_order")
+    casedetails =  CaseDetail.objects.filter(collection=collection).order_by("sort_order")
 
     return render(
         request,
         "atlas/collection_detail.html",
-        {"collection": collection, "cases": cases, "can_edit": True},
+        {"collection": collection, "casesdetails": casedetails, "can_edit": True},
     )