33 lines
767 B
Python
33 lines
767 B
Python
from __future__ import unicode_literals
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import yaml
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from django.core.exceptions import ValidationError
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from django.utils.deconstruct import deconstructible
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from django.utils.translation import ugettext_lazy as _
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@deconstructible
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class YAMLValidator(object):
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"""
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Validates that the input is YAML compliant.
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"""
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def __call__(self, value):
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value = value.strip()
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try:
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yaml.safe_load(value)
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except yaml.error.YAMLError:
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raise ValidationError(
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_('Enter a valid YAML value.'),
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code='invalid'
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)
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def __eq__(self, other):
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return (
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isinstance(other, YAMLValidator)
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)
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def __ne__(self, other):
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return not (self == other)
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