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64 lines
1.8 KiB
64 lines
1.8 KiB
# -*- coding: utf-8 -*-
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#
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import json
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from django import forms
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from django.utils import six
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from django.core.exceptions import ValidationError
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from django.utils.translation import ugettext as _
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from ..utils import get_signer
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signer = get_signer()
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__all__ = [
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'FormDictField', 'FormEncryptCharField', 'FormEncryptDictField',
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'FormEncryptMixin',
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]
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class FormDictField(forms.Field):
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widget = forms.Textarea
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def to_python(self, value):
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"""Returns a Python boolean object."""
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# Explicitly check for the string 'False', which is what a hidden field
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# will submit for False. Also check for '0', since this is what
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# RadioSelect will provide. Because bool("True") == bool('1') == True,
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# we don't need to handle that explicitly.
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if isinstance(value, six.string_types):
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value = value.replace("'", '"')
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try:
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value = json.loads(value)
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return value
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except json.JSONDecodeError:
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return ValidationError(_("Not a valid json"))
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else:
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return ValidationError(_("Not a string type"))
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def validate(self, value):
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if isinstance(value, ValidationError):
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raise value
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if not value and self.required:
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raise ValidationError(self.error_messages['required'], code='required')
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def has_changed(self, initial, data):
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# Sometimes data or initial may be a string equivalent of a boolean
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# so we should run it through to_python first to get a boolean value
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return self.to_python(initial) != self.to_python(data)
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class FormEncryptMixin:
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pass
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class FormEncryptCharField(FormEncryptMixin, forms.CharField):
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pass
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class FormEncryptDictField(FormEncryptMixin, FormDictField):
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pass
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