安装
pip install Flask-Migrate
安装依赖
pip install Flask-Script Flask-SQLAlchemy
代码示例
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_script import Manager
from flask_migrate import Migrate, MigrateCommand
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///app.db'
db = SQLAlchemy(app)
migrate = Migrate(app, db)
manager = Manager(app)
manager.add_command('db', MigrateCommand)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(128))
if __name__ == '__main__':
manager.run()# 1、初始化 python main.py db init # 2、生成迁移文件 python main.py db migrate -m "备注信息" # 3、执行升级 python main.py db upgrade # 4、查看历史记录 python main.py db history # 5、执行降级 python main.py db downgrade <版本号>
mac上安装报错
brew install pandoc OSError: No pandoc was found
莫名的依赖…无解
