Django Rest Framework插入和更新可写的嵌套序列化程序 我尝试使用Django Rest Framework插入和更新可写的嵌套序列化程序，如下所示。但这不起作用。
我该怎么做？
class JobCardViewSet(ModelViewSet):
authentication_classes = (TokenAuthentication,)
permission_classes = (IsAuthenticated,)
serializer_class = JobCardSerializer
http_method_names = ('get', 'post', 'put', 'patch')
def get_queryset(self):
if 'key' in self.request.GET:
key = self.request.GET['key']
return JobCard.objects.filter(models.Q(job_order_no__icontains=key) | models.Q(job_name__icontains=key))
if 'party' in self.request.GET:
return JobCard.objects.filter(party_name__name__icontains=self.request.GET['party'])
else:
return JobCard.objects.all()
def create(self, request, *args, **kwargs):
self.serializer_class = JobCardPostSerializer
return super(JobCardViewSet, self).create(request, *args, **kwargs)
def update(self, request, *args, **kwargs):
self.serializer_class = JobCardPostSerializer
return super(JobCardViewSet, self).update(request, *args, **kwargs)
我的序列化器
class PaperDescriptionPostSerializer(ModelSerializer):
class Meta:
model = PaperDescription
fields = '__all__'
class JobCardPostSerializer(ModelSerializer):
paper_description = PaperDescriptionPostSerializer(many=True)
class Meta:
model = JobCard
fields = '__all__'
def create(self, validated_data):
paper_description_list = validated_data.pop('paper_description')
job_card = JobCard.objects.create(**validated_data)
for paper in paper_description_list:
paper.update({"party_name": job_card.party_name})
paper.update({"job_order_no": job_card.job_order_no})
paper.update({"job_name": job_card.job_name})
paper.update({"job_date": job_card.job_date})
paper.update({"job_type": job_card.job_type})
job_card.paper_description.add(PaperDescription.objects.create(**paper))
return job_card
def update(self, instance, validated_data):
paper_description = validated_data.pop('paper_description')
instance.job_name = validated_data.get("job_name", instance.job_name)
instance.job_date = validated_data.get("job_date", instance.job_date)
instance.delivery_date = validated_data.get("delivery_date", instance.delivery_date)
instance.job_created_by = validated_data.get("job_created_by", instance.job_created_by)
instance.die_no = validated_data.get("die_no", instance.die_no)
instance.job_re_print = validated_data.get("job_re_print", instance.job_re_print)
instance.remarks = validated_data.get("remarks", instance.remarks)
instance.update_reason = validated_data.get("update_reason", instance.update_reason)
instance.job_details = validated_data.get("job_details", instance.job_details)
instance.party_name = validated_data.get("party_name", instance.party_name)
instance.reference_id = validated_data.get("reference_id", instance.reference_id)
instance.branch_name = validated_data.get("branch_name", instance.branch_name)
# instance.title = validated_data.get("title", instance.title)
instance.save()
keep_id = []
for choice in paper_description:
if "id" in choice.keys():
if PaperDescription.objects.filter(id=choice["id"]).exists():
c = PaperDescription.objects.get(id=choice["id"])
# c.text = choice.get('text', c.text)
c.job_name = choice.get('job_name', c.job_name)
c.job_date = choice.get('job_date', c.job_date)
c.job_element = choice.get('job_element', c.job_element)
c.thickness = choice.get('thickness', c.thickness)
c.no_of_pages = choice.get('no_of_pages', c.no_of_pages)
c.print_size = choice.get('print_size', c.print_size)
c.order_qty = choice.get('order_qty', c.order_qty)
c.no_of_ups = choice.get('no_of_ups', c.no_of_ups)
c.print_sheets = choice.get('print_sheets', c.print_sheets)
c.forms = choice.get('forms', c.forms)
c.no_of_plates = choice.get('no_of_plates', c.no_of_plates)
c.wastage_per_farma = choice.get('wastage_per_farma', c.wastage_per_farma)
c.front_color = choice.get('front_color', c.front_color)
c.double_single = choice.get('double_single', c.double_single)
c.total_wastage = choice.get('total_wastage', c.total_wastage)
c.paper_required = choice.get('paper_required', c.paper_required)
c.back_color = choice.get('back_color', c.back_color)
c.prints = choice.get('prints', c.prints)
c.ruling = choice.get('ruling', c.ruling)
c.party_name = choice.get('party_name', c.party_name)
c.paper_type = choice.get('paper_type', c.paper_type)
c.paper_size = choice.get('paper_size', c.paper_size)
c.paper_brand = choice.get('paper_brand', c.paper_brand)
c.machine_name = choice.get('machine_name', c.machine_name)
c.save()
keep_id.append(c.id)
else:
continue
else:
c = PaperDescription.objects.create(**choice)
keep_id.append(c.id)
for choice in instance.paper_description:
if choice.id not in keep_id:
choice.delete()
return instance
更新时 ID嵌套的对象已存在
{
"paper_description": [
{
"id": [
"paper description with this id already exists."
]
},
{
"id": [
"paper description with this id already exists."
]
}
]
}
答案 0 :(得分：0)
我有同样的问题。只需从id字段中删除所有验证器即可。它将为您提供帮助。
class PaperDescriptionPostSerializer(ModelSerializer):
class Meta:
model = PaperDescription
fields = '__all__'
extra_kwargs = {
'id': {'validators': []},
}