英文:
Filter Backends Django Rest Framework List API View
问题
抱歉，我只回答不包含代码的请求。以下是您要翻译的内容：
Excuse me devs, I want to ask about Django generics List API View filter_backends, how can i return none / data not found when the param is wrong or empty?
# My Django Viewsclass FilterTablePVPlantByPVOwnerId(filters.FilterSet):id = filters.CharFilter(field_name='id', lookup_expr='exact')class Meta:model = TablePVPlantfields = ['id']class PlantListByClientView(generics.ListAPIView):queryset = TablePVPlant.objects.all()serializer_class = PlantListSerializerfilter_backends = [DjangoFilterBackend]filterset_class = FilterTablePVPlantByPVOwnerIddef list(self, request, *args, **kwargs):if self.request.query_params:response = super().list(request, *args, **kwargs)response.data = {'status': 'success','data': response.data, 'msg': 'done'}return response
英文:
Excuse me devs, I want to ask about Django generics List API View filter_backends, how can i return none / data not found when the param is wrong or empty?
# My Django Viewsclass FilterTablePVPlantByPVOwnerId(filters.FilterSet):id = filters.CharFilter(field_name='id', lookup_expr='exact')class Meta:model = TablePVPlantfields = ['id']class PlantListByClientView(generics.ListAPIView):queryset = TablePVPlant.objects.all()serializer_class = PlantListSerializerfilter_backends = [DjangoFilterBackend]filterset_class = FilterTablePVPlantByPVOwnerIddef list(self, request, *args, **kwargs):if self.request.query_params:response = super().list(request, *args, **kwargs)response.data = {'status': 'success','data': response.data, 'msg': 'done'}return response
答案1
得分: 1
在Django和Django Rest Framework中，这些类型的问题通过引发异常来处理：
from rest_framework.exceptions import APIExceptionclass BadParameter(APIException):status_code = 400default_detail = '参数x错误或为空'default_code = 'bad_param'# ...class PlantListByClientView(generics.ListAPIView):# ...def list(self, request, *args, **kwargs):# ...if bad_param:raise BadParameter()
框架的某些部分会为您引发异常，例如，在验证失败时，会引发ValidationError。
英文:
In both Django and in Django Rest Framework these type of things are dealt with by raising Exceptions:
from rest_framework.exceptions import APIExceptionclass BadParameter(APIException):status_code = 400default_detail = 'The parameter x is wrong or empty'default_code = 'bad_param'# ...class PlantListByClientView(generics.ListAPIView):# ...def list(self, request, *args, **kwargs):# ...if bad_param:raise BadParameter()
Some parts of the framework will raise exceptions for you, like, for example, serializes rising ValidationError when validation fails.
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