flask
pymysql
flask_script
flask_migrate
flask_sqlalchemy

flaskexample
 |---static
 |---templates
 |---app.py

setting.py
 
 class DevelopmentConfig:
  DEBUG = True
  SQLALCHEMY_DATABASE_URI=mysql+pymysql://用戶:密碼@host/數(shù)據(jù)庫(kù)
  SQLALCHEMY_TRACK_MODIFICATIONS=False
  SQLALCHEMY_ECHO=True
  ENV='development'
  
# 此時(shí)項(xiàng)目目錄結(jié)構(gòu) 
flaskexample
 |---static
 |---templates
 |---app.py
 |---setting.py

apps.__init__.py
 
 from flask import Flask
 
 import setting
 from exts import db
 
 
 def create_app():
  app = Flask(__name__, template_folser='../templates', static_folder='../static')
  
  app.config.from_object(setting.DevelopmentConfig)
  
  # 初始化ORM
  db.init_app(app=app)
  
  return app

# 此時(shí)項(xiàng)目目錄結(jié)構(gòu) 
flaskexample
 |---apps
  |---__init__.py
 |---static
 |---templates
 |---app.py
 |---setting.py

app.py
 from flask import Flask
 from flask_script import Manager
 from flask_migrate import Migrate, MigrateCommand

 from apps import create_app
 from exts import db
 from apps.user import user
 
 app = create_app()
 
 # 配置manage
 manager = Manager(app=app)
 
 # 配置migrate命令,將相關(guān)命令交給manage
 migrate = Migrate(app=app, db=db)
 manager.add_command('db', MigrateCommand)
 
 # 注冊(cè)藍(lán)圖
 app.register_blueprint(user)
 
 
 if __name__ == '__main__':
  manager.run()

exts.__init__.py
 
 from flask_sqlalchemy import SQLAlchemy
 
 # 配置ORM
 db = SQLAlchemy()
 
# 此時(shí)項(xiàng)目目錄結(jié)構(gòu) 
flaskexample
 |---apps
  |---__init__.py
 |---exts
  |---__init__.py
 |---static
 |---templates
 |---app.py
 |---setting.py

# 此時(shí)項(xiàng)目目錄結(jié)構(gòu) 
flaskexample
 |---apps
  |---__init__.py
  |---user
   |---__init__.py
   |---view.py
   |---models.py
 |---exts
  |---__init__.py
 |---static
 |---templates
 |---app.py
 |---setting.py

user.model
 from exts import db
 
 class User(db.Model):
  username = db.Column(db.String(60), nullable=True)
  password = db.Column(db.String(60), nullable=True)
  ···

 # 1. 初始化表
 python app.py db init
 # 2. 生成遷移文件
 Python app.py db migrate
 # 3. 進(jìn)行數(shù)據(jù)遷移
 python app.py db upgrate

#當(dāng)命令2執(zhí)行成功后自動(dòng)生成migrations文件夾
# 此時(shí)項(xiàng)目目錄結(jié)構(gòu) 
flaskexample
 |---apps
  |---user
   |---__init__.py
   |---models.py
   |---view.py
  |---__init__.py
 |---exts
  |---__init__.py
 |---migrations
  |---versions
   |---9eef46471b52_.py
  |---alembic.ini
  |---env.py
  |---READEME
  |---script.py.mako
 |---static
 |---templates
 |---app.py
 |---setting.py

user.__init__

 from flask import Blueprint
 user = Blueprint("user", __name__)