# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1264582753 -3600
# Node ID 91a56a30141eff5c88e225e8804e8419d87b1883
# Parent  bd8480824e0bc4e9851b79e71e4cb6dc2b2c40c7
by default this is not the widget responsability to turn empty string into None,
move this behaviour to the field.

diff -r bd8480824e0b -r 91a56a30141e web/formfields.py
--- a/web/formfields.py	Wed Jan 27 09:57:53 2010 +0100
+++ b/web/formfields.py	Wed Jan 27 09:59:13 2010 +0100
@@ -359,7 +359,7 @@
         correctly typed objects, but process_for_value must return a typed value.
         Override this method to type the value if necessary
         """
-        return value
+        return value or None
 
     def process_posted(self, form):
         for field in self.actual_fields(form):
diff -r bd8480824e0b -r 91a56a30141e web/formwidgets.py
--- a/web/formwidgets.py	Wed Jan 27 09:57:53 2010 +0100
+++ b/web/formwidgets.py	Wed Jan 27 09:59:13 2010 +0100
@@ -115,7 +115,7 @@
         posted = form._cw.form
         val = posted.get(field.input_name(form, self.suffix))
         if isinstance(val, basestring):
-            val = val.strip() or None
+            val = val.strip()
         return val
 
     @deprecated('[3.6] use values_and_attributes')