django-multiselectfield/multiselectfield/validators.py

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# -*- coding: utf-8 -*-
# Copyright (c) 2013 by Pablo Martín <goinnn@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this programe. If not, see <http://www.gnu.org/licenses/>.
from django.core import validators
from django.utils.translation import ugettext_lazy as _
class MaxValueMultiFieldValidator(validators.MaxLengthValidator):
code = 'max_multifield_value'
def clean(self, x):
return len(','.join(x))
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class MinChoicesValidator(validators.MinLengthValidator):
message = _(u'You must select a minimum of %(limit_value)d choices.')
code = 'min_choices'
class MaxChoicesValidator(validators.MaxLengthValidator):
message = _(u'You must select a maximum of %(limit_value)d choices.')
code = 'max_choices'