Root ERP5 site lacks getRelativeUrl. Add it for consistency so we do not have...

Root ERP5 site lacks getRelativeUrl. Add it for consistency so we do not have to add ugly code exceptions in scripts.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38414 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/ERP5Site.py

@@ -340,6 +340,13 @@ class ERP5Site(FolderMixIn, CMFSite):
     """
     return join(self.getPhysicalPath(),'/')
 
+  security.declareProtected(Permissions.AccessContentsInformation, 'getRelativeUrl')
+  def getRelativeUrl(self):
+    """
+      Returns the url of an object relative to the portal site.
+    """
+    return self.getPortalObject().portal_url.getRelativeUrl(self)
+
   # Old name - for compatibility
   security.declareProtected(Permissions.AccessContentsInformation, 'getPath')
   getPath = getUrl