Fixed #5232 -- Fixed the validation of `DecimalField` so that the negative sign is not counted as a digit. Thanks, Andrew Durdin.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@6067 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/validators.py

@@ -423,7 +423,7 @@ class IsValidDecimal(object):
         except DecimalException:
             raise ValidationError, _("Please enter a valid decimal number.")
 
-        pieces = str(val).split('.')
+        pieces = str(val).lstrip("-").split('.')
         decimals = (len(pieces) == 2) and len(pieces[1]) or 0
         digits = len(pieces[0])
 

django/newforms/fields.py

@@ -190,7 +190,7 @@ class DecimalField(Field):
             value = Decimal(value)
         except DecimalException:
             raise ValidationError(ugettext('Enter a number.'))
-        pieces = str(value).split('.')
+        pieces = str(value).lstrip("-").split('.')
         decimals = (len(pieces) == 2) and len(pieces[1]) or 0
         digits = len(pieces[0])
         if self.max_value is not None and value > self.max_value:

tests/regressiontests/forms/tests.py

@@ -1167,6 +1167,31 @@ ValidationError: [u'Ensure that there are no more than 2 decimal places.']
 Traceback (most recent call last):
 ...
 ValidationError: [u'Ensure that there are no more than 2 digits before the decimal point.']
+>>> f.clean('-12.34')
+Decimal("-12.34")
+>>> f.clean('-123.45')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure that there are no more than 4 digits in total.']
+>>> f.clean('-.12')
+Decimal("-0.12")
+>>> f.clean('-00.12')
+Decimal("-0.12")
+>>> f.clean('-000.12')
+Decimal("-0.12")
+>>> f.clean('-000.123')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure that there are no more than 2 decimal places.']
+>>> f.clean('-000.1234')
+Traceback (most recent call last):
+...
+ValidationError: [u'Ensure that there are no more than 4 digits in total.']
+>>> f.clean('--0.12')
+Traceback (most recent call last):
+...
+ValidationError: [u'Enter a number.']
+
 >>> f = DecimalField(max_digits=4, decimal_places=2, required=False)
 >>> f.clean('')