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from django.db import models
from django.core.validators import RegexValidator
class PositiveBigIntegerField(models.BigIntegerField):
_south_introspects = True
def get_internal_type(self):
return "BigIntegerField"
def formfield(self, **kwargs):
defaults = { 'min_value': 0 }
defaults.update(kwargs)
return super(PositiveBigIntegerField, self).formfield(**defaults)
class PGPKeyField(models.CharField):
_south_introspects = True
def __init__(self, *args, **kwargs):
super(PGPKeyField, self).__init__(*args, **kwargs)
self.validators.append(RegexValidator(r'^[0-9A-F]{40}$',
"Ensure this value consists of 40 hex characters.", 'hex_char'))
def to_python(self, value):
if value == '' or value is None:
return None
value = super(PGPKeyField, self).to_python(value)
# remove all spaces
value = value.replace(' ', '')
# prune prefixes, either 0x or 2048R/ type
if value.startswith('0x'):
value = value[2:]
value = value.split('/')[-1]
# make all (hex letters) uppercase
return value.upper()
def formfield(self, **kwargs):
# override so we don't set max_length form field attribute
return models.Field.formfield(self, **kwargs)
# vim: set ts=4 sw=4 et:
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