getWebSectionValueList should return nothing if no web section is visible.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26334 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/WebSite.py

@@ -220,9 +220,11 @@ class WebSite(WebSection):
                          id='WebSite._getWebSectionUidList',
                          cache_factory='erp5_content_medium')
 
+      web_section_uid_list = _getWebSectionUidList(self)
+      if web_section_uid_list:
         section_list = self.portal_domains.searchPredicateList(document, 
                           portal_type='Web Section',
-                        uid=_getWebSectionUidList(self))
+                          uid=web_section_uid_list)
 
         section_dict = {}
 
@@ -243,3 +245,5 @@ class WebSite(WebSection):
         section_list.sort(key=lambda x: x.getIntIndex())
 
         return section_list
+      else:
+        return []