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"""
Oldforms validators for tagging related fields - these are still
required for basic ``django.contrib.admin`` application field validation
until the ``newforms-admin`` branch lands in trunk.
"""
from django.core.validators import ValidationError
from django.utils.translation import ugettext as _
from tagging import settings
from tagging.utils import parse_tag_input
def isTagList(field_data, all_data):
"""
Validates that ``field_data`` is a valid list of tags.
"""
for tag_name in parse_tag_input(field_data):
if len(tag_name) > settings.MAX_TAG_LENGTH:
raise ValidationError(
_('Each tag may be no more than %s characters long.') % settings.MAX_TAG_LENGTH)
def isTag(field_data, all_data):
"""
Validates that ``field_data`` is a valid tag.
"""
tag_names = parse_tag_input(field_data)
if len(tag_names) > 1:
raise ValidationError(_('Multiple tags were given.'))
elif len(tag_names[0]) > settings.MAX_TAG_LENGTH:
raise ValidationError(
_('A tag may be no more than %s characters long.') % settings.MAX_TAG_LENGTH)
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