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