Implement choosing source in search form

core/views/ui/insights.py

@@ -79,6 +79,8 @@ class InsightsNicks(LoginRequiredMixin, APIView):
             return HttpResponse("No nick")
         net = request.data["net"]
         nick = request.data["nick"]
+        if not nick:
+            return HttpResponseForbidden()
         nicks = get_nicks(request, net, [nick])
         # Filter Guest
         nicks = [x for x in nicks if not x.startswith("Guest")]