还有一个问题就是peewee怎么实现类似Django ORM那种为每个请求独立建立一个数据库连接,不管这个 request 的生命周期有多少次 crud 操作都封装在一个 connect 里面,send response 之后就 close 这个connect 虽然peewee 提供了一个connection_context 但是这玩意可以跨多个函数使用吗? defget_video_id(short_uuid:str) ...
connection_context() Create a context-manager that will hold open a connection for the duration of the wrapped block. Example: def on_app_startup(): # When app starts up, create the database tables, being sure # the connection is closed upon completion. with database.connection_context...
为了不用不停的连接断开peewee提供with 操作 with database.connection_context(): Person.select() ... 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 三、ssh访问数据库的实例 方法一 from pe...
database= database#this model uses the "people.db" databaseprimary_key = False#没有主键的模型#database.connect()definit():#Person.create_table(True)#database.create_tables([Person, Pet]) # 会自动解决模型间的依赖关系#with database:with database.connection_context():"""在包装的代码块期间...
"max_connections": 40 }) peewee_connect = connect(**mysql_connect_params.dict()) peewee_connect.bind([UserInfo]) # 查询 sql = UserInfo.select(UserInfo.id, UserInfo.name).where(UserInfo.id < 100) with peewee_connect.connection_context(): count = sql.count() data = sql.objects().exec...
get_conn()has changed toDatabase.connection() execution_context()is replaced by simply using the database instance as a context-manager. For a connection contextwithouta transaction, useDatabase.connection_context(). Database.create_tables()andDatabase.drop_tables(), as well asModel.create_tabl...
with db.execution_context(): # A new connection will be opened or, if using a connection pool, # pulled from the pool of available connections. Additionally, a # transaction will be started. for user in get_all_user(): user_id = user['id'] ...
with db.execution_context(): # A new connection will be opened or, if using a connection pool, # pulled from the pool of available connections. Additionally, a # transaction will be started. for user in get_all_user(): user_id = user['id'] ...
(1) table.grade = '二年级' table.save() # 删除 School.delete().where(School.name == '小红').execute() 注意: 所有数据库操作都要写在connection_context()上下文管理器里面,否则会导致数据库连接数量过多而崩溃 with db.connection_context(): data = {'name':'小明','age':12,'grade':'一...
execution_context() is replaced by simply using the database instance as a context-manager. For a connection context without a transaction, use :py:meth:`Database.connection_context`. :py:meth:`Database.create_tables` and :py:meth:`Database.drop_tables`, as well as :py:meth:`Model.crea...