there is API for this

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35128 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/erp5_xhtml_style/SkinTemplateItem/portal_skins/erp5_access_tab/ERP5Site_renderContributionDialog.xml

@@ -58,7 +58,7 @@
         <option value=""\n
                 i18n:translate="" \n
                 i18n:domain="ui">-- Select Classification --</option>\n
-        <option tal:repeat="item python:[c for c in here.portal_categories.classification.getCategoryChildTranslatedLogicalPathItemList(local_sort_id=\'translated_title\')[1:] if len(c[1].split(\'/\'))>1]" \n
+        <option tal:repeat="item python:context.portal_categories.classification.getCategoryChildTranslatedLogicalPathItemList(local_sort_id=\'translated_title\', filter_node=True, display_none_category=False)"\n
                 tal:content="python:item[0]" \n
                 tal:attributes="value python:item[1]"/>\n
       </select>\n

product/ERP5/bootstrap/erp5_xhtml_style/bt/revision

-941
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+942
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