Use count_method only if the render format is html.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3291 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/ListBox.py

@@ -1018,7 +1018,7 @@ class ListBoxWidget(Widget.Widget):
         else:
           #LOG('ListBox 612', 0, str((selection_name, selection.__dict__)))
           if list_method is not None:
-            if count_method is not None and not selection.invert_mode:
+            if count_method is not None and not selection.invert_mode and render_format == 'html':
               #LOG('ListBox', 0, 'use count_method %r' % count_method)
               # If the count method is available, get only required objects.
               selection.edit( params = kw, report = None )