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[英]Retrieving count of unique Django objects based on multiple fields of another Django model
[英]Django: exclude objects based on another model
我有一个 model Comment
:
class Comment(models.Model):
upload = models.ForeignKey(Upload, related_name='comments', on_delete=models.CASCADE)
user = models.ForeignKey(get_user_model(), related_name='comments', on_delete=models.CASCADE)
text = models.TextField(blank=False, null=False)
date_created = models.DateTimeField(auto_now_add=True)
而且我还有一个 model BlockedUser
:
class BlockedUser(models.Model):
blocked_by = models.ForeignKey(get_user_model(), on_delete=models.CASCADE, related_name="blocked_by")
user = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
date_created = models.DateTimeField(auto_now_add=True)
除了被你屏蔽的人写的评论外,我如何获取所有评论?
queryset = Comment.objects.all().select_related('user')
queryset = queryset.exclude(user__in=BlockedUser.objects.filter(blocked_by=self.request.user))
这显然不能那样工作,但我不知道如何编写它才能正常工作。
您可以从存在BlockedUser
的user
中排除Comment
s, blocked_by
request.user
具有:
Comment.objects.exclude(user__blockeduser__blocked_by=request.user)
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