Django：按评论数量排序答案

【问题标题】：Django: Order by number of comments issueDjango：按评论数量排序
【发布时间】：2011-02-06 22:29:59
【问题描述】：

我正在尝试按它们拥有的 cmets 数量在 django 中排序项目列表。但是，似乎存在一个问题，即 Count 函数没有考虑到 django cmets 还使用 content_type_id 来区分不同对象的 cmets 的事实！

这给了我一个小问题，因为使用标准方法时所有对象的注释计数都是错误的；有没有“不错”的修复方法，还是我需要退回到原始 sql？

尝试获取正确顺序的代码：

app_list = App.objects.filter(published=True)
.annotate(num_comments=Count('comments'))
.order_by('-num_comments')

查询的示例输出（注意没有提及内容类型 ID）：

SELECT "apps_app"."id", "apps_app"."name", 
"apps_app"."description","apps_app"."author_name", "apps_app"."site_url", 
"apps_app"."source_url", "apps_app"."date_added", "apps_app"."date_modified", 
"apps_app"."published", "apps_app"."published_email_sent", "apps_app"."created_by_id", 
"apps_app"."rating_votes", "apps_app"."rating_score", COUNT("django_comments"."id") AS      
"num_comments" FROM "apps_app" LEFT OUTER JOIN "django_comments" ON ("apps_app"."id" = 
"django_comments"."object_pk") WHERE "apps_app"."published" = 1 GROUP BY 
"apps_app"."id", "apps_app"."name", "apps_app"."description", "apps_app"."author_name", 
"apps_app"."site_url", "apps_app"."source_url", "apps_app"."date_added", 
"apps_app"."date_modified", "apps_app"."published", "apps_app"."published_email_sent", 
"apps_app"."created_by_id", "apps_app"."rating_votes", "apps_app"."rating_score" ORDER 
BY num_comments DESC LIMIT 4

【问题讨论】：

标签： django django-comments

【解决方案1】：

我想我找到了答案：Django Snippet

【讨论】：