在Django Rest Framework中，我有以下json，我正在尝试PUT
{
"trgmst_id": 2244,
"trgmst_type": 1,
"trgmst_name": "evnt_job ",
"trgmst_desc": null,
"trgmst_public": "Y",
"trgmst_active": "Y",
"trgmst_trigger": 10,
"owner_name": "Operations ",
"trgmst_jobctl": 1,
"trgmst_alljobs": "N",
"trgmst_lstchgtm": "2014-09-17T16:05:32.463",
"trgmst_parm": "OP=0,EX1=1,EX2=1",
"trgmst_maxreruns": 0,
"nodmst_name": null,
"servicemst_name": null,
"trgmst_info": null,
"trgmst_monitor": 1,
"trgmst_trgtskcnt": 0,
"trgmst_lasttrgtskrun": null,
"event_action_details": [
{
"trgtsk_order": 1,
"trgtsk_id": 2977,
"trgmst_id": 2244,
"tskmst_id": null,
"trgtsk_type": 1
}
]
}
在提交PUT请求时，我得到以下回溯 -
Traceback:
File "D:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
112. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:\Python27\lib\site-packages\django\views\generic\base.py" in view
69. return self.dispatch(request, *args, **kwargs)
File "D:\Python27\lib\site-packages\django\views\decorators\csrf.py" in wrapped_view
57. return view_func(*args, **kwargs)
File "D:\Python27\lib\site-packages\rest_framework\views.py" in dispatch
400. response = self.handle_exception(exc)
File "D:\Python27\lib\site-packages\rest_framework\views.py" in dispatch
397. response = handler(request, *args, **kwargs)
File "D:\Tidal\API\views.py" in put
204. if serializer.is_valid():
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in is_valid
553. return not self.errors
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in errors
545. ret = self.from_native(data, files)
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in from_native
996. instance = super(ModelSerializer, self).from_native(data, files)
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in from_native
368. attrs = self.restore_fields(data, files)
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in restore_fields
283. field.field_from_native(data, files, field_name, reverted_data)
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in field_from_native
472. if serializer.is_valid():
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in is_valid
553. return not self.errors
File "D:\Python27\lib\site-packages\rest_framework\serializers.py" in errors
521. identities = [self.get_identity(self.to_native(obj)) for obj in objects]
Exception Type: TypeError at /deploy/event/
Exception Value: 'RelatedManager' object is not iterable
这是一个相当简单的视图/序列化器。这是我的序列化器。请注意，它包含反向关系 -
class EventActionSerializer(serializers.ModelSerializer):
class Meta:
model = Trgtsk
resource_name = 'trgtsk'
fields = ('trgtsk_order', 'trgtsk_id', 'trgmst_id', 'tskmst_id', 'trgtsk_type')
class EventSerializer(serializers.ModelSerializer):
owner_name = serializers.Field(source='owner_id.owner_name')
nodmst_name = serializers.Field(source='nodmst_id.nodmst_name')
servicemst_name = serializers.Field(source='servicemst_id.servicemst_name')
event_action_details = EventActionSerializer()
class Meta:
model = Trgmst
resource_name = 'trgmst'
depth = 1
fields = ('trgmst_id', 'trgmst_type', 'trgmst_name', 'trgmst_desc', 'trgmst_public', 'trgmst_active',
'trgmst_trigger', 'owner_name', 'trgmst_jobctl', 'trgmst_alljobs', 'trgmst_lstchgtm', 'trgmst_parm',
'trgmst_maxreruns', 'nodmst_name', 'servicemst_name', 'trgmst_info', 'trgmst_monitor', 'trgmst_trgtskcnt',
'trgmst_lasttrgtskrun', 'event_action_details')
视图只是标准的API视图。当没有任何相关模型与我的任何其他观点时，我没有问题。
class DeployEventView(APIView):
def get_object(self, pk):
try:
return Trgmst.objects.get(pk=pk)
except Trgmst.DoesNotExist:
raise Http404
def get(self, request, format=None):
name = self.request.GET.get('name')
pk = Trgmst.objects.filter(trgmst_name=name).values_list('trgmst_id', flat=True)
trgmst = self.get_object(pk)
serializer = EventSerializer(trgmst)
return Response(serializer.data)
def put(self, request, format=None):
name = self.request.GET.get('name')
pk = Trgmst.objects.filter(trgmst_name=name).values_list('trgmst_id', flat=True)
trgmst = self.get_object(pk)
serializer = EventSerializer(trgmst, data=request.DATA)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def delete(self, request, format=None):
name = self.request.GET.get('name')
pk = Trgmst.objects.filter(trgmst_name=name).values_list('trgmst_id', flat=True)
trgmst = self.get_object(pk)
trgmst.delete()
return Response(status=status.HTTP_204_NO_CONTENT)
答案 0 :(得分：0)
奇怪的是，在我的序列化程序中，我在EventSerializer中更改了以下行 -
class EventActionSerializer（serializers.ModelSerializer）：
class Meta:
model = Trgtsk
resource_name = 'trgtsk'
fields = ('trgtsk_order', 'trgtsk_id', 'trgmst_id', 'tskmst_id', 'trgtsk_type')
class EventSerializer(serializers.ModelSerializer):
owner_name = serializers.Field(source='owner_id.owner_name')
nodmst_name = serializers.Field(source='nodmst_id.nodmst_name')
servicemst_name = serializers.Field(source='servicemst_id.servicemst_name')
event_action_details = EventActionSerializer
class Meta:
model = Trgmst
resource_name = 'trgmst'
depth = 1
fields = ('trgmst_id', 'trgmst_type', 'trgmst_name', 'trgmst_desc', 'trgmst_public', 'trgmst_active',
'trgmst_trigger', 'owner_name', 'trgmst_jobctl', 'trgmst_alljobs', 'trgmst_lstchgtm', 'trgmst_parm',
'trgmst_maxreruns', 'nodmst_name', 'servicemst_name', 'trgmst_info', 'trgmst_monitor', 'trgmst_trgtskcnt',
'trgmst_lasttrgtskrun', 'event_action_details')
特别是我从行event_action_details = EventActionSerializer中删除了（），现在如果对象存在于两个模型中，我可以很好地。如果它是新的，它会抱怨event_action_details.trgmst_id不存在，如果它试图同时进行这两个操作就不会存在吗？