54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
"""
|
|
UK-specific Form helpers
|
|
"""
|
|
|
|
import re
|
|
|
|
from django.forms.fields import CharField, Select
|
|
from django.forms import ValidationError
|
|
from django.utils.translation import ugettext_lazy as _
|
|
|
|
class UKPostcodeField(CharField):
|
|
"""
|
|
A form field that validates its input is a UK postcode.
|
|
|
|
The regular expression used is sourced from the schema for British Standard
|
|
BS7666 address types: http://www.govtalk.gov.uk/gdsc/schemas/bs7666-v2-0.xsd
|
|
|
|
The value is uppercased and a space added in the correct place, if required.
|
|
"""
|
|
default_error_messages = {
|
|
'invalid': _(u'Enter a valid postcode.'),
|
|
}
|
|
outcode_pattern = '[A-PR-UWYZ]([0-9]{1,2}|([A-HIK-Y][0-9](|[0-9]|[ABEHMNPRVWXY]))|[0-9][A-HJKSTUW])'
|
|
incode_pattern = '[0-9][ABD-HJLNP-UW-Z]{2}'
|
|
postcode_regex = re.compile(r'^(GIR 0AA|%s %s)$' % (outcode_pattern, incode_pattern))
|
|
space_regex = re.compile(r' *(%s)$' % incode_pattern)
|
|
|
|
def clean(self, value):
|
|
value = super(UKPostcodeField, self).clean(value)
|
|
if value == u'':
|
|
return value
|
|
postcode = value.upper().strip()
|
|
# Put a single space before the incode (second part).
|
|
postcode = self.space_regex.sub(r' \1', postcode)
|
|
if not self.postcode_regex.search(postcode):
|
|
raise ValidationError(self.error_messages['invalid'])
|
|
return postcode
|
|
|
|
class UKCountySelect(Select):
|
|
"""
|
|
A Select widget that uses a list of UK Counties/Regions as its choices.
|
|
"""
|
|
def __init__(self, attrs=None):
|
|
from uk_regions import UK_REGION_CHOICES
|
|
super(UKCountySelect, self).__init__(attrs, choices=UK_REGION_CHOICES)
|
|
|
|
class UKNationSelect(Select):
|
|
"""
|
|
A Select widget that uses a list of UK Nations as its choices.
|
|
"""
|
|
def __init__(self, attrs=None):
|
|
from uk_regions import UK_NATIONS_CHOICES
|
|
super(UKNationSelect, self).__init__(attrs, choices=UK_NATIONS_CHOICES)
|