code: def get_urls(self):
          
          entry_admin_urls = super(EntryAdminWYMEditorMixin, self).get_urls()
          urls = [
              url(r'^wymeditor/$',
                  self.admin_site.admin_view(self.wymeditor),
                  name='zinnia_entry_wymeditor'),
          ]
          return urls + entry_admin_urls
docs: Overload the admin's urls for WYMEditor.