#4807: Decimal regex doesn't support a case where no leading numbers are used
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Reporter: [EMAIL PROTECTED] | Owner: adrian
Status: new | Component: Validators
Version: SVN | Resolution:
Keywords: | Stage: Accepted
Has_patch: 1 | Needs_docs: 0
Needs_tests: 0 | Needs_better_patch: 1
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Comment (by [EMAIL PROTECTED]):
A second thought is to just try to convert the string to a decimal. That
way, we let the Python module do the heavy lifting and we know whether or
not something is a decimal from python's perspective which is what we
really care about. This may have a small performance hit compared to a
regex but I bet it isn't too terribly bad.
Something like this:
{{{
from decimal import Decimal
try:
decimal_value = Decimal(str(field_data))
except decimal.InvalidOperation
raise ValidationError, _("Please enter a valid decimal number.")
}}}
Then, use as_tuple to figure out the number of digit and decimal places.
Is there any reason this would be problematic?
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Ticket URL: <http://code.djangoproject.com/ticket/4807#comment:12>
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