如何在Django模型中添加字段？

Question

在Django中，如果我有一个包含4个字段的模型，但现在我想添加一个新字段，如何将数据保存在旧模型中？

Answer 1

You'll need to perform a "migration", and the current best way to do this in Django is with a tool called South .

Check out their tutorial . Make sure you make a copy of your db before you do this, since you may mess something up if it's your first time using South.

Answer 2

use South

pip install South

firstly, keep your django models match your current database tables exactly, then run:

python manage.py schemamigration myapp --initial
python manage.py migrate myapp --fake 
#Make changes to your django model (add new field)
python manage.py schemamigration myapp --auto 
python manage.py migrate myapp