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37 lines
1.2 KiB
37 lines
1.2 KiB
7 years ago
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# -*- 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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class DictField(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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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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pass
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value = {}
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return value
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def validate(self, value):
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print(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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