随笔分类 -  Django

DjangoModels修改后出现You are trying to add a non-nullable field 'download' to book without a default; we can't do that (the database needs something to populate existing rows). Please select a fix:
摘要：这个问题是在模型中新添加的，在原来已经有的表单中没有值。所以在新添加的值得括号中添加如 1 download = models.ForeignKey(Download, on_delete=models.CASCADE, null=True)然后 1 python manage.py makemig 阅读全文
posted @ 2020-07-09 08:50 ACWink 阅读(2579) 评论(0) 推荐(0)