fix des vues quand la page liées est pas publiée

newsbox_cms/views.py

 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+from django.http import Http404
+from django.utils.translation import get_language
+
+from cms.utils.page_resolver import get_page_from_request
+
 
 class NewsboxCMSEditModeMixinView(object):
     """
     Restrict to published content even if user has change permission.
     Display drafts, only if us has change permisssion (newsbox.views feature) AND cms toolbar is in
     "use draft mode" (edit_mode or build_mode)
+    If related app page does not exists, raise a 404 to avoid reverse not match into the template
     """
+
+    def get(self, request, *args, **kwargs):
+        if request.resolver_match._func_path.split('.')[0] == 'cms':
+            page = get_page_from_request(request)
+            if page.publisher_is_draft:
+                page = page.publisher_draft
+            if not page.is_published(get_language()):
+                raise Http404
+        return super(NewsboxCMSEditModeMixinView, self).get(request, *args, **kwargs)
+
     def get_queryset(self):
         queryset = super(NewsboxCMSEditModeMixinView, self).get_queryset()
         if hasattr(self.request, 'toolbar') and not self.request.toolbar.use_draft: