flask-sqlalchemy与flask-migrate

flask-sqlalchemy

# 安装
pip install flask-sqlalchemy

# 所有的导入都找下面的db
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()

flask-migrate

安装:
pip install flask-migrate

命令：manager.add_command('db1', MigrateCommand)

# 当项目第一次执行迁移的时候,只需要初始化一次
1、python3 manage.py db1 init 

2、python3 manage.py db1 migrate # 等同于django的makemigrations

3、python3 manage.py db1 upgrade # 等同于django的migrate

如何使用

目录结构

 account.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

from flask import Blueprint
from .. import db
from .. import models

account = Blueprint('account', __name__)


@account.route('/login')
def login():
    # db.session.add(models.Users(username='lqz', email='123'))
    # #db.session.query(models.Users).all()
    # db.session.commit()
    # 添加示例
    """
    db.session.add(models.Users(username='lqz', pwd='123', gender=1))
    db.session.commit()

    obj = db.session.query(models.Users).filter(models.Users.id == 1).first()
    print(obj)

    PS: db.session和db.create_session
    """
    # db.session.add(models.Users(username='wupeiqi1', email='wupeiqi1@xx.com'))
    # db.session.commit()
    # db.session.close()
    #
    # db.session.add(models.Users(username='wupeiqi2', email='wupeiqi2@xx.com'))
    # db.session.commit()
    # db.session.close()
    # db.session.add(models.Users(username='alex1',email='alex1@live.com'))
    # db.session.commit()
    # db.session.close()

    user_list = db.session.query(models.Users).all()

    for item in user_list:
        print(item.username,"is",item.email)


    return 'login'

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