Improve a bit this script

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39682 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_web_blog/SkinTemplateItem/portal_skins/erp5_web_blog/WebSection_getAuthorName.xml

@@ -59,9 +59,7 @@
     design.\n
 """\n
 \n
-document = context.getObject()\n
-source = document.getContributorValue()\n
-return (source is not None and source.getTitle() or context.Base_translateString("Unknown User"))\n
+return context.getContributorTitle() or context.Base_translateString("Unknown User")\n
 </string> </value>
         </item>
         <item>
@@ -108,9 +106,6 @@ return (source is not None and source.getTitle() or context.Base_translateString
                           <tuple>
                             <string>_getattr_</string>
                             <string>context</string>
-                            <string>document</string>
-                            <string>source</string>
-                            <string>None</string>
                           </tuple>
                         </value>
                     </item>

bt5/erp5_web_blog/bt/revision

-60
\ No newline at end of file
+61
\ No newline at end of file