python - 使用Flask-Migrate实现数据库迁移,出现KeyError?

Question

我是参照flask web开发这本书，数据库为sqlite，说到flask-migrate，我在用命令 python hello.py db migrate -m “initial migration”创建数据库迁移脚本时报以下错误:

显示了keyerror:'migrate',这个报错显示是什么意思呢?该如何解决?在网上也没找到这种信息.

Answer 1

I also encountered a problem like yours. Later I found out that miagrates was instantiated without adding db:
migrate = Migrate(app, db)
This way it’s ok