让我们解决这个问题。 我认为应该向我显示所有未回答的问题,这些问题在4小时后被问到。我已经尝试了很多,但是没有用,所以我问这个。 我该怎么做才能过滤掉没有评论的帖子
views.py
def subject_unanswered(request, slug):
subject = Subject.objects.filter(slug=slug).first()
four_hours = datetime.today() - timedelta(hours=4)
posts = Post.objects.filter(subject=subject, created_at__lt=four_hours).order_by('-created_at')
args = {
'subject' : subject,
'posts' : posts,
}
return render(request, 'ask/subject_time_ago.html', args)
models.py
class Comment(models.Model):
related_post = models.ForeignKey(Post, on_delete=models.CASCADE)
comment = models.TextField(max_length=1000)
created_by = models.ForeignKey(MyUser, on_delete=models.CASCADE, related_name='comments')
created_at = models.DateTimeField(auto_now_add=True)
likes = models.ManyToManyField(MyUser, related_name='comment_likes', blank=True)
class Post(models.Model):
slug = models.SlugField(unique=True, max_length=200)
subject = models.ForeignKey(Subject, on_delete=models.CASCADE)
topic = models.CharField(max_length=200)
text = models.TextField(max_length=5000)
created_by = models.ForeignKey(MyUser, on_delete=models.CASCADE, related_name='posts')
created_at = models.DateTimeField(auto_now_add=True)
likes = models.ManyToManyField(MyUser, related_name='likes', blank=True)
答案 0 :(得分:1)
您可以按反向关系进行过滤
empty
这应该返回所有没有评论的帖子。