Avoid Conversion When calling OOoStylesheet

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20747 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/OOoTemplate.py

@@ -461,11 +461,16 @@ xmlns:config="http://openoffice.org/2001/config" office:version="1.0">
       raise ValueError, 'Can not render a template without a parent acquisition context'
     # Retrieve master document
     ooo_document = getattr(here, self.ooo_stylesheet)
+    format = request.get('format')
+    try:
       # If style is dynamic, call it
       try:
+        request.set('format', None)
         ooo_document = ooo_document()
       except AttributeError:
         pass
+    finally:
+        request.set('format', format)
     # Create a new builder instance
     ooo_builder = OOoBuilder(ooo_document)
     # Pass builder instance as extra_context