Fixed #8290 -- Fixed DecimalField's cleaning of values with a large number of decimal places, based on patch from dgouldin.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8391 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Gary Wilson Jr 2008-08-15 20:09:47 +00:00
parent 9d1ec0b5ec
commit 727133109c
2 changed files with 42 additions and 5 deletions

View File

@ -244,18 +244,28 @@ class DecimalField(Field):
value = Decimal(value)
except DecimalException:
raise ValidationError(self.error_messages['invalid'])
pieces = str(value).lstrip("-").split('.')
decimals = (len(pieces) == 2) and len(pieces[1]) or 0
digits = len(pieces[0])
sign, digittuple, exponent = value.as_tuple()
decimals = abs(exponent)
# digittuple doesn't include any leading zeros.
digits = len(digittuple)
if decimals >= digits:
# We have leading zeros up to or past the decimal point. Count
# everything past the decimal point as a digit. We also add one
# for leading zeros before the decimal point (any number of leading
# whole zeros collapse to one digit).
digits = decimals + 1
whole_digits = digits - decimals
if self.max_value is not None and value > self.max_value:
raise ValidationError(self.error_messages['max_value'] % self.max_value)
if self.min_value is not None and value < self.min_value:
raise ValidationError(self.error_messages['min_value'] % self.min_value)
if self.max_digits is not None and (digits + decimals) > self.max_digits:
if self.max_digits is not None and digits > self.max_digits:
raise ValidationError(self.error_messages['max_digits'] % self.max_digits)
if self.decimal_places is not None and decimals > self.decimal_places:
raise ValidationError(self.error_messages['max_decimal_places'] % self.decimal_places)
if self.max_digits is not None and self.decimal_places is not None and digits > (self.max_digits - self.decimal_places):
if self.max_digits is not None and self.decimal_places is not None and whole_digits > (self.max_digits - self.decimal_places):
raise ValidationError(self.error_messages['max_whole_digits'] % (self.max_digits - self.decimal_places))
return value

View File

@ -403,6 +403,33 @@ True
>>> f.clean('00.50') == Decimal("0.50")
True
>>> f = DecimalField(decimal_places=2)
>>> f.clean('0.00000001')
Traceback (most recent call last):
...
ValidationError: [u'Ensure that there are no more than 2 decimal places.']
>>> f = DecimalField(max_digits=3)
# Leading whole zeros "collapse" to one digit.
>>> f.clean('0000000.10') == Decimal("0.1")
True
>>> f.clean('0000000.100')
Traceback (most recent call last):
...
ValidationError: [u'Ensure that there are no more than 3 digits in total.']
# Only leading whole zeros "collapse" to one digit.
>>> f.clean('000000.02') == Decimal('0.02')
True
>>> f.clean('000000.002')
Traceback (most recent call last):
...
ValidationError: [u'Ensure that there are no more than 3 digits in total.']
# DateField ###################################################################
>>> import datetime