Merge pull request #1604 from ilvalle/fix_1570

prevent is_empty from stripping whitespaces, close #1570

gluon/tests/test_validators.py

@@ -442,13 +442,13 @@ class TestValidators(unittest.TestCase):
         rtn = IS_NOT_EMPTY()('  ')
         self.assertEqual(rtn, ('  ', 'Enter a value'))
         rtn = IS_NOT_EMPTY()(' \n\t')
-        self.assertEqual(rtn, ('', 'Enter a value'))
+        self.assertEqual(rtn, (' \n\t', 'Enter a value'))
         rtn = IS_NOT_EMPTY()([])
         self.assertEqual(rtn, ([], 'Enter a value'))
         rtn = IS_NOT_EMPTY(empty_regex='def')('def')
-        self.assertEqual(rtn, ('', 'Enter a value'))
+        self.assertEqual(rtn, ('def', 'Enter a value'))
         rtn = IS_NOT_EMPTY(empty_regex='de[fg]')('deg')
-        self.assertEqual(rtn, ('', 'Enter a value'))
+        self.assertEqual(rtn, ('deg', 'Enter a value'))
         rtn = IS_NOT_EMPTY(empty_regex='def')('abc')
         self.assertEqual(rtn, ('abc', None))
 

gluon/validators.py

@@ -989,14 +989,15 @@ class IS_DECIMAL_IN_RANGE(Validator):
 
 
 def is_empty(value, empty_regex=None):
+    _value = value
     """test empty field"""
     if isinstance(value, (str, unicodeT)):
         value = value.strip()
         if empty_regex is not None and empty_regex.match(value):
             value = ''
     if value is None or value == '' or value == []:
-        return (value, True)
+        return (_value, True)
-    return (value, False)
+    return (_value, False)
 
 
 class IS_NOT_EMPTY(Validator):