jumpserver/apps/common/mixins/serializers.py

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# -*- coding: utf-8 -*-
#
from django.core.exceptions import ObjectDoesNotExist
from rest_framework.utils import html
from rest_framework.settings import api_settings
from rest_framework.exceptions import ValidationError
from rest_framework.fields import SkipField, empty
__all__ = ['BulkSerializerMixin', 'BulkListSerializerMixin']
class BulkSerializerMixin(object):
"""
Become rest_framework_bulk not support uuid as a primary key
so rewrite it. https://github.com/miki725/django-rest-framework-bulk/issues/66
"""
def to_internal_value(self, data):
from rest_framework_bulk import BulkListSerializer
ret = super(BulkSerializerMixin, self).to_internal_value(data)
id_attr = getattr(self.Meta, 'update_lookup_field', 'id')
if self.context.get('view'):
request_method = getattr(getattr(self.context.get('view'), 'request'), 'method', '')
# add update_lookup_field field back to validated data
# since super by default strips out read-only fields
# hence id will no longer be present in validated_data
if all((isinstance(self.root, BulkListSerializer),
id_attr,
request_method in ('PUT', 'PATCH'))):
id_field = self.fields.get("id") or self.fields.get('pk')
if data.get("id"):
id_value = id_field.to_internal_value(data.get("id"))
else:
id_value = id_field.to_internal_value(data.get("pk"))
ret[id_attr] = id_value
return ret
def run_validation(self, data=empty):
"""
批量创建时获取到的self.initial_data是list
所以想用一个属性来存放当前操作的数据集在validate_field中使用
:param data:
:return:
"""
# 只有批量创建的时候,才需要重写 initial_data
if self.parent:
self.initial_data = data
return super().run_validation(data)
class BulkListSerializerMixin(object):
"""
Become rest_framework_bulk doing bulk update raise Exception:
'QuerySet' object has no attribute 'pk' when doing bulk update
so rewrite it .
https://github.com/miki725/django-rest-framework-bulk/issues/68
"""
def to_internal_value(self, data):
"""
List of dicts of native values <- List of dicts of primitive datatypes.
"""
if not self.instance:
return super().to_internal_value(data)
if html.is_html_input(data):
data = html.parse_html_list(data)
if not isinstance(data, list):
message = self.error_messages['not_a_list'].format(
input_type=type(data).__name__
)
raise ValidationError({
api_settings.NON_FIELD_ERRORS_KEY: [message]
}, code='not_a_list')
if not self.allow_empty and len(data) == 0:
if self.parent and self.partial:
raise SkipField()
message = self.error_messages['empty']
raise ValidationError({
api_settings.NON_FIELD_ERRORS_KEY: [message]
}, code='empty')
ret = []
errors = []
for item in data:
try:
# prepare child serializer to only handle one instance
if 'id' in item:
pk = item["id"]
elif 'pk' in item:
pk = item["pk"]
else:
raise ValidationError("id or pk not in data")
child = self.instance.get(id=pk) if self.instance else None
self.child.instance = child
self.child.initial_data = item
# raw
validated = self.child.run_validation(item)
except ValidationError as exc:
errors.append(exc.detail)
except ObjectDoesNotExist as e:
errors.append(e)
else:
ret.append(validated)
errors.append({})
if any(errors):
raise ValidationError(errors)
return ret