Ticket #3293: interger_field.patch

django/newforms/fields.py

@@ -118 +118 @@
         """
         super(IntegerField, self).clean(value)
         if not self.required and value in EMPTY_VALUES:
-            return u''
+            return None
         try:
             value = int(value)
         except (ValueError, TypeError):

tests/regressiontests/forms/tests.py

@@ -770 +770 @@
 
 >>> f = IntegerField(required=False)
 >>> f.clean('')
-u''
 >>> f.clean(None)
-u''
 >>> f.clean('1')
 1
 >>> isinstance(f.clean('1'), int)