DRF序列化多个模型

Question

我无法序列化多个对象as this answers says to do。特别是当试图在序列化程序GeneralSerializer上获取字段Functional的值时，它给出了这个错误“Got AttributeError”。 序列化程序字段的名称可能不正确，并且与QuerySet实例上的任何属性或键都不匹配。 原始异常文本为：“QuerySet”对象没有“Functional”属性

有人能帮我吗？ 我的views.py是这样做的

General = namedtuple('General', ('Functional', 'Pfm'))
@csrf_exempt
def listall(request):
if request.method == 'GET':
    general = General(
            Functional= SnpsFunctionalelement.objects.values('countexperiments','filetype',rsid=F('snpid__rsid'), FunctionalElement=F('elementid__name'), CellLine=F('celllineid__name')),
            Pfm = SnpsPfm.objects.values('start','strand','type','scoreref','scorealt',rsid=F('snpid__rsid'), pfm_name=F('pfmid__name'))
        )
    serializer = GeneralSerializer(general, many = True)
    return JsonResponse(serializer.data, safe=False)

我的serializers.py

class SnpsFunctionalelementSerializer(serializers.ModelSerializer):
    rsid = serializers.CharField(max_length=20)
    FunctionalElement = serializers.CharField(max_length=55)
    CellLine = serializers.CharField(max_length=55)

    class Meta:
        model = SnpsFunctionalelement
        fields = ['rsid', 'FunctionalElement', 'CellLine', 'countexperiments', 'filetype']

class SnpsPfmSerializer(serializers.ModelSerializer):
    rsid = serializers.CharField(max_length=20)
    pfm_name = serializers.CharField(max_length=50)

    class Meta:
        model = SnpsPfm
        fields =[ 'rsid','pfm_name','start','strand','type','scoreref','scorealt']

class GeneralSerializer(serializers.Serializer):
    Functional = SnpsFunctionalelementSerializer(many=True)
    Pfm = SnpsPfmSerializer(many=True)

注：我甚至尝试在没有DRF序列化程序的情况下工作

all_objects = [SnpsFunctionalelement.objects.values('countexperiments','filetype',rsid=F('snpid__rsid'), FunctionalElement=F('elementid__name'), CellLine=F('celllineid__name')), 
        SnpsPfm.objects.values('start','strand','type','scoreref','scorealt',rsid=F('snpid__rsid'), pfm_name=F('pfmid__name'))]
    ser = serializers.serialize('json',all_objects)
    return JsonResponse(ser)

但是它给了我这个错误“QuerySet对象没有属性_meta”