从 django 模型访问数据（DateTimeField）时，它总是返回 None

Question

I hava a model like this one:

class PostDetail(models.Model):
    topic_id = models.IntegerField()  
    post_user_id = models.IntegerField()  
    content = models.TextField()  
    date = models.DateTimeField(default=timezone.now) 

    class Meta:
        ordering = ("-date",)  

I hava a test table like this:

but when I access data in this way:

main_reply = PostDetail.objects.filter(topic_id=id)
print(main_reply[0].date)

It always return None , I am really confuse

ps: When I access it in SQL, it is alright.

Answer 1

我用pycharm插入数据，出现如上的错误，但是如果我使用django admin web插入数据，它工作正常，如果用户发布数据插入数据，它工作正常