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我有 3 个模型。用户、流程、流程映射。流程模型有一个created_by 字段，它是用户模型的外键。流程映射模型具有流程名称字段，它是流程表的外键。

我的代码如下。

模型.py

class process(models.Model):
    created_by = models.ForeignKey(User, on_delete=models.CASCADE, db_column= "username")
    process_name = models.CharField(max_length=200)
    ....
class processmap(models.Model):
    process = models.ForeignKey(process, on_delete=models.CASCADE, db_column="process_name")
    ....

视图.py

class processViewSet(viewsets.ModelViewSet):
    permission_classes = (IsAuthenticated,)

    queryset= process.objects.all()        
    serializer_class = processSerializer
    filter_backends = (DjangoFilterBackend,filters.SearchFilter)
    filter_fields = ('created_by', 'process_name',)


def get_queryset(self):
    if self.request.user.is_superuser:
        return self.queryset
    else:
        queryset = self.queryset
        query_set = queryset.filter(created_by=self.request.user)
        return query_set

class processmapViewset(viewsets.ModelViewSet):
    permission_classes = (IsAuthenticated,)
    try:
        queryset= processmap.objects.all()
        serializer_class = processmapSerializer
        filter_backends = (DjangoFilterBackend,filters.SearchFilter)
        filter_fields = ('process', 'service', 'sequence','process__created_by')

序列化程序.py

class processSerializer(serializers.HyperlinkedModelSerializer):
#created_by = UserSerializer(many=True)
class Meta:
    model = process
    fields = ("__all__")
def perform_create(self, serializer):
    serializer.save(user=self.request.user)

class processmapSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
    model = processmap
    fields =  ("__all__")
def perform_create(self, serializer):
    serializer.save(user=self.request.user)

当用户创建一个进程然后去映射该进程时，外键列出了进程表中存在的所有进程。相反，我只需要列出登录用户创建的进程。我怎样才能做到这一点。

注意：我已经搜索过相同的答案，并且大多数答案都涉及表格。请注意，我没有使用任何表单，我希望在 views.py 中实现该逻辑。

提前致谢 ：）

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