python - 一起计算注释字段

Question

most_viewed_videos = Video.objects.filter(
                videowatch__created__month=today.month,
                viewing__status="D"
            ).annotate(
                count=Count("videowatch"),
                viewing_count=Sum("viewing")
            ).values("count", "viewing_count").order_by(
                "-viewing_count",
                "-count"
            )

嘿，我有这段代码片段，我的问题是如何将 count 和 viewing_count 加在一起得到一个结果。

我尝试过，但没有发现任何有效的方法。

编辑: 解决方案对我有用

        most_viewed_videos = Video.objects.filter(
            videowatch__created__month=today.month,
            viewing__status="D"
        ).extra(
            select={'total': 'COUNT("videowatch") + SUM(CAST("viewing" as CHAR))'}
        ).values("total").order_by("-total")

Answer 1

简单地你可以在不使用.extra()的情况下实现它，这是解决方案:

most_viewed_videos = Video.objects.filter(
            videowatch__created__month=today.month,
            viewing__status="D"
        ).annotate(
            count=Count("videowatch"),
            viewing_count=Sum("viewing"),
            count_viewing_count = Sum(F(Count("videowatch"))+F(Count("viewing")))
        ).values("count", "viewing_count").order_by(
            "-viewing_count",
            "-count"
        )

我没有测试过，但它应该可以工作