112 lines
4.4 KiB
Python
112 lines
4.4 KiB
Python
import copy
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.forms import widgets
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from django.utils.translation import ugettext_lazy as _
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from rest_framework import serializers
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from rest_framework.utils import model_meta
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from ..core.validators import validate_password
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class SetPasswordSerializer(serializers.Serializer):
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password = serializers.CharField(max_length=128, label=_('Password'),
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style={'widget': widgets.PasswordInput}, validators=[validate_password])
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class HyperlinkedModelSerializer(serializers.HyperlinkedModelSerializer):
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""" support for postonly_fields, fields whose value can only be set on post """
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def validate(self, attrs):
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""" calls model.clean() """
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attrs = super(HyperlinkedModelSerializer, self).validate(attrs)
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if isinstance(attrs, models.Model):
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return attrs
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validated_data = dict(attrs)
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ModelClass = self.Meta.model
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# Remove many-to-many relationships from validated_data.
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info = model_meta.get_field_info(ModelClass)
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for field_name, relation_info in info.relations.items():
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if relation_info.to_many and (field_name in validated_data):
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validated_data.pop(field_name)
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if self.instance:
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# on update: Merge provided fields with instance field
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instance = copy.deepcopy(self.instance)
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for key, value in validated_data.items():
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setattr(instance, key, value)
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else:
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instance = ModelClass(**validated_data)
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instance.clean()
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return attrs
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def post_only_cleanning(self, instance, validated_data):
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""" removes postonly_fields from attrs """
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model_attrs = dict(**validated_data)
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post_only_fields = getattr(self, 'post_only_fields', None)
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if instance is not None and post_only_fields:
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for attr, value in validated_data.items():
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if attr in post_only_fields:
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model_attrs.pop(attr)
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return model_attrs
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def update(self, instance, validated_data):
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""" removes postonly_fields from attrs when not posting """
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model_attrs = self.post_only_cleanning(instance, validated_data)
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return super(HyperlinkedModelSerializer, self).update(instance, model_attrs)
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def partial_update(self, instance, validated_data):
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""" removes postonly_fields from attrs when not posting """
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model_attrs = self.post_only_cleanning(instance, validated_data)
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return super(HyperlinkedModelSerializer, self).partial_update(instance, model_attrs)
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class RelatedHyperlinkedModelSerializer(HyperlinkedModelSerializer):
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""" returns object on to_internal_value based on URL """
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def to_internal_value(self, data):
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url = data.get('url')
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if not url:
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raise ValidationError({
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'url': "URL is required."
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})
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account = self.get_account()
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queryset = self.Meta.model.objects.filter(account=account)
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self.fields['url'].queryset = queryset
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obj = self.fields['url'].to_internal_value(url)
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return obj
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class SetPasswordHyperlinkedSerializer(HyperlinkedModelSerializer):
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password = serializers.CharField(max_length=128, label=_('Password'),
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validators=[validate_password], write_only=True, required=False,
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style={'widget': widgets.PasswordInput})
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def validate_password(self, attrs, source):
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""" POST only password """
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if self.instance:
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if 'password' in attrs:
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raise serializers.ValidationError(_("Can not set password"))
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elif 'password' not in attrs:
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raise serializers.ValidationError(_("Password required"))
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return attrs
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def validate(self, attrs):
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""" remove password in case is not a real model field """
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try:
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self.Meta.model._meta.get_field_by_name('password')
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except models.FieldDoesNotExist:
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pass
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else:
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password = attrs.pop('password', None)
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attrs = super(SetPasswordSerializer, self).validate()
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if password is not None:
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attrs['password'] = password
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return attrs
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def create(self, validated_data):
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password = validated_data.pop('password')
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instance = self.Meta.model(**validated_data)
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instance.set_password(password)
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instance.save()
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return instance
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