Я не думаю, что у Django в любом случае есть разрешение на уровне поля по умолчанию.
Но мы можем настроить и ограничить поля с помощью serializers.py
и views.py
.
Вviews.py
class RaceUpdateView(UpdateAPIView):
lookup_field = 'pk'
serializer_class = RaceUpdateSerializer
queryset = Race.objects.all()
permission_classes = [IsAuthenticated]
model = Race
def put(self, request, pk):
try:
try:
race_obj = self.get_object()
except Exception as error:
context = {'error': "Race Id does not exist", 'success': "false", 'message': 'Race Id does not exist.'}
return Response(context, status=status.HTTP_404_NOT_FOUND)
#I don't know how you are checking owner. So i kept it this way.
if request.user.id != race_obj.owner.id:
#passing the fields which are to be used by the serializer.
serializer = RaceUpdateSerializer(race_obj, data=request.data, partial=True, fields=('participants',))
else:
serializer = RaceUpdateSerializer(race_obj, data=request.data, partial=True)
if serializer.is_valid():
try:
serializer.save()
except Exception as error:
context = {"success": False, "message": "Update Failed. %s" % str(error), "error": str(error)}
return Response(context, status=status.HTTP_400_BAD_REQUEST)
context = {"success": True, "message": "Updated Successful", "error": "", "data": serializer.data}
return Response(context, status=status.HTTP_200_OK)
context = {"success": False, "message": "Updated Failed, Invalid Input Data", "error": str(serializer.errors)}
return Response(context, status=status.HTTP_400_BAD_REQUEST)
except Exception as error:
context = {'error': str(error), 'success': "false", 'message': 'Failed To Update Race.'}
return Response(context, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
In serializers.py
class RaceUpdateSerializer(ModelSerializer):
class Meta:
model = Race
fields = '__all__'
def __init__(self, *args, **kwargs):
# Don't pass the 'fields' arg up to the superclass
fields = kwargs.pop('fields', None)
# Instantiate the superclass normally
super(RaceUpdateSerializer, self).__init__(*args, **kwargs)
if fields is not None:
# Drop any fields that are not specified in the `fields` argument.
allowed = set(fields)
existing = set(self.fields)
for field_name in existing - allowed:
self.fields.pop(field_name)
Таким образом, при обновлении будут использоваться только те поля, которые вызываются из views.py
.
serializer = RaceUpdateSerializer(race_obj, data=request.data, partial=True, fields=('participants',))
Это позволит выполнить задачу, которую вы пытаетесь выполнить.
Примечание - Таким же образом можно разрешить несколько полей
serializer = RaceUpdateSerializer(race_obj, data=request.data, partial=True, fields=('field1','field2'))