1.评论与子评论
在创建数据表时,评论与子评论可以进行自相关,这样方便增删改查
class Commit(models.Model): nid = models.AutoField(primary_key=True) user = models.ForeignKey(to='UserInfo', to_field='nid') article = models.ForeignKey(to='Article', to_field='nid') content = models.CharField(max_length=255) create_time = models.DateTimeField(auto_now_add=True) # 这样写是可以的 # parent_id=models.IntegerField() # 自关联 # parent_id=models.ForeignKey(to='Commit',to_field='nid') parent = models.ForeignKey(to='self', to_field='nid',null=True,blank=True)