Check anonymous in cource detail view

apps/course/views.py

@@ -190,19 +190,20 @@ class CourseView(DetailView):
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
-        context['next'] = self.request.GET.get('next', None)
-        context['paid'] = self.object.payments.filter(
-            user=self.request.user,
-            status__in=[
-                Pingback.PINGBACK_TYPE_REGULAR,
-                Pingback.PINGBACK_TYPE_GOODWILL,
-                Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
-            ],
-        ).exists()
-        context['pending'] = self.object.payments.filter(
-            user=self.request.user,
-            status=Pingback.PINGBACK_TYPE_RISK_UNDER_REVIEW,
-        ).exists()
+        if not self.request.user.is_anonymous:
+            context['next'] = self.request.GET.get('next', None)
+            context['paid'] = self.object.payments.filter(
+                user=self.request.user,
+                status__in=[
+                    Pingback.PINGBACK_TYPE_REGULAR,
+                    Pingback.PINGBACK_TYPE_GOODWILL,
+                    Pingback.PINGBACK_TYPE_RISK_REVIEWED_ACCEPTED,
+                ],
+            ).exists()
+            context['pending'] = self.object.payments.filter(
+                user=self.request.user,
+                status=Pingback.PINGBACK_TYPE_RISK_UNDER_REVIEW,
+            ).exists()
         return context
 
     def get_queryset(self):