更新时间:2023-12-01 21:40:22
prefetch_related在queryset对象上起作用.最新返回单个模型而不是查询集.
prefetch_related works on a queryset object. Latest returns a single model not a queryset.
这应该有效:
tripstatus = TripStatus.objects.all().prefetch_related('statuses').latest('statustime')