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