put preferences in fields TALES context

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3642 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/Form.py

@@ -70,6 +70,12 @@ def get_value(self, id, **kw):
         kw['form'] = form
         kw['here'] = object
         kw['container'] = container
+        try :
+          kw['preferences'] = object.getPortalObject()\
+                                    .portal_preferences.getActivePreference()
+        except AttributeError :
+          LOG('ERP5Form', 0,
+              'portal_preferences not put in TALES context (not installed?)')
         # This allows to pass some pointer to the local object
         # through the REQUEST parameter. Not very clean.
         # Used by ListBox to render different items in a list