FIXED: ArticleDetail expected a unique slug, but slug is set to unique for month.

src/content/views.py

@@ -138,8 +138,11 @@ class ArticleDetail(generic.DetailView):
     """
     Render the news Article, but only if it got published.
     """
-
+    def get_queryset(self):
         queryset = models.Article.objects.filter(status=models.STATUS_PUBLISHED)
+        queryset = queryset.filter(date_created__year=self.kwargs['year'])
+        queryset = queryset.filter(date_created__month=self.kwargs['month'])
+        return queryset
 
 
 class ArticleForm(WYSIWYGEditorMixin, generic.UpdateView):