marshmallow-sqlalchemy
作者:互联网
marshmallow-sqlalchemy
https://marshmallow-sqlalchemy.readthedocs.io/en/latest/
https://github.com/marshmallow-code/marshmallow-sqlalchemy
SQLAlchemy integration with the marshmallow (de)serialization library.
marshmallow
https://marshmallow.readthedocs.io/en/3.0/
https://github.com/marshmallow-code/marshmallow
marshmallow is an ORM/ODM/framework-agnostic library for converting complex datatypes, such as objects, to and from native Python datatypes.
In short, marshmallow schemas can be used to:
Validate input data.
Deserialize input data to app-level objects.
Serialize app-level objects to primitive Python types. The serialized objects can then be rendered to standard formats such as JSON for use in an HTTP API.
flask_marshmallow
https://flask-marshmallow.readthedocs.io/en/latest/
Flask + marshmallow for beautiful APIs
Flask-Marshmallow is a thin integration layer for Flask (a Python web framework) and marshmallow (an object serialization/deserialization library) that adds additional features to marshmallow, including URL and Hyperlinks fields for HATEOAS-ready APIs. It also (optionally) integrates with Flask-SQLAlchemy.
https://realpython.com/flask-connexion-rest-api-part-2/
https://github.com/realpython/materials/blob/master/flask-connexion-rest-part-2/version_1/models.py
PLAY CODE
https://github.com/fanqingsong/code_snippet/blob/master/python/sqlalchemy/alchemy_serialize.py
#!/usr/bin/env python3 # -*- coding: utf-8 -*- from sqlalchemy import Column, String, create_engine from sqlalchemy.orm import sessionmaker from sqlalchemy.ext.declarative import declarative_base from marshmallow_sqlalchemy import SQLAlchemyAutoSchema # 创建对象的基类: Base = declarative_base() # 定义User对象: class User(Base): # 表的名字: __tablename__ = 'user' # 表的结构: id = Column(String(20), primary_key=True) name = Column(String(20)) class UserSchema(SQLAlchemyAutoSchema): class Meta: model = User load_instance = True # 初始化数据库连接: engine = create_engine('sqlite:///test1.db') # Base.metadata.create_all(engine) # 创建DBSession类型: DBSession = sessionmaker(bind=engine) # # 创建session对象: # session = DBSession() # # 创建新User对象: # new_user = User(id='7', name='Bob') # # 添加到session: # session.add(new_user) # # 提交即保存到数据库: # session.commit() # # 关闭session: # session.close() # 创建Session: session = DBSession() # 创建Query查询,filter是where条件,最后调用one()返回唯一行,如果调用all()则返回所有行: user = session.query(User).filter(User.id=='6').one() # 打印类型和对象的name属性: print('type:', type(user)) print('name:', user.name) # 关闭Session: session.close() user_schema = UserSchema() dump_data = user_schema.dump(user) print(dump_data) load_data = user_schema.load(dump_data, session=session) print(load_data)
标签:sqlalchemy,marshmallow,session,user,https,User 来源: https://www.cnblogs.com/lightsong/p/15633059.html