Question

这个问题已被多次询问，但我无法使我的代码生效。无论如何，假设我有一个博客，有博客文章：

class BlogPost(models.Model):  # This class doesn't really matter
    author = models.ForeignKey(myUser)
    text = models.TextField()

碰巧我使用其他模型记录每篇博文的访问次数：

class Activity(models.Model):
    user_id = models.CharField()
    # I log different types of activities, hence the choice
    action_id = models.IntegerField(choices=ACTIVITY_ACTIONS)
    object_id = models.CharField()
    created_at = models.DateTimeField()

我想要的是从精确的日期开始访问最多的博客文章，按其观看次数排序。我现在正在做什么（在活动经理中）：

def get_blogposts_most_viewed_since(self, date):
    # I get all related activities (blog posts views since date)
    activities = Activity.objects.since(date).filter(action_id=BLOGPOST_VIEW)

    # I get all blogposts' ids
    blogpost_ids = events.values('object_id')

    # I get all blogposts ordered by their number of views:
    blogposts = BlogPost.objects.filter(id__in=blogpost_ids)\
                 .annotate(nb_views=Count('id')).order_by('-nb_views')
    return blogposts

这不起作用。我做了一些测试：我创建了三篇博客文章，blogpost_a被查看两次，blogpost_b被查看一次，blogpost_c没有获得任何视图。当我打电话给get_blogposts_most_viewed_since时，我会收到blogpost_a和blogpost_b，但看起来像是一个random_order。

我尝试用以下方法进行调试：

for blogpost in blogposts:
    print blogpost.nb_views

两个博文（a和b）都有nb_views == 1。

我做错了什么？

按出现次数对模型进行排序

0 个答案: