更新models字段
出现的问题:
$ python manage.py makemigrations None You are trying to add a non-nullable field 'file_type' to filejinja without a default; we can't do that (the database needs something to populate existing rows). Please select a fix: 1) Provide a one-off default now (will be set on all existing rows with a null value for this column) 2) Quit, and let me add a default in models.py Select an option:
原因:
之前数据表里面已经存在,如果添加,file_type需要默认值
解决:
方法1:
在model字段后面添加,
blank=True, null=True
file_type = models.CharField(verbose_name="文件type", max_length=1, choices=( ('1', "配置文件"), ('2', "sls文件"), ), blank=True, null=True)
再执行
$ python manage.py makemigrations None Migrations for 'minions': apps\minions\migrations\0011_filejinja_file_type.py - Add field file_type to filejinja
方法2:
数据库中找到django_migrations,该表对应,每次makemigrations的每次记录
删除,最后1条数据,
在删除你要更新的表。
重新生成新的表