测试开发-后端开发do实体类创建

她如

创建user表实体类

• 新增do目录下创建user_entity.py和init.py
  

1. from sqlalchemy import Integer
2. from server import db
5. """
6. User表的实体类，与DB字段一致
7. """
8. class UserEntity(db.Model):
10.     # 表名, 需要重新命名，默认按类名来创建表名
11.     __tablename__ = "user"
12.     # 唯一主键ID
13.     id = db.Column(Integer,primary_key=True)
14.     # 用户名，唯一，不可为空
15.     username = db.Column(db.String(64), nullable=False, unique=True)
16.     # 密码，不为空
17.     password = db.Column(db.String(128), nullable=False)
19.     def user_entity_dict(self):
20.         return {"id": self.id, "username": self.username, "password": self.password}

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• 在do的init.py文件写入create_all()方法来初始化创建表
  

1. from server import db
2. from do.user_entity import UserEntity   # 倒入要执行的实体类包
4. """
5.     数据库表创建,运行文件创建
6.     注意：创建一次后，就可以注释掉，避免之后每次启动项目都创建
7. """
9. if __name__ == "__main__":
10.     db.create_all()

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• 执行创建表
  

1. /usr/local/bin/python3.8 /Applications/Python/TestPlatform/api_test_platform_demo/backend/do/__init__.py
2. 2023-07-04 00:38:57,648 INFO sqlalchemy.engine.Engine SELECT DATABASE()
3. 2023-07-04 00:38:57,648 INFO sqlalchemy.engine.Engine [raw sql] {}
4. 2023-07-04 00:38:57,661 INFO sqlalchemy.engine.Engine SELECT @@sql_mode
5. 2023-07-04 00:38:57,661 INFO sqlalchemy.engine.Engine [raw sql] {}
6. 2023-07-04 00:38:57,667 INFO sqlalchemy.engine.Engine SELECT @@lower_case_table_names
7. 2023-07-04 00:38:57,668 INFO sqlalchemy.engine.Engine [raw sql] {}
8. 2023-07-04 00:38:57,679 INFO sqlalchemy.engine.Engine BEGIN (implicit)
9. 2023-07-04 00:38:57,680 INFO sqlalchemy.engine.Engine SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = %(table_schema)s AND table_name = %(table_name)s
10. 2023-07-04 00:38:57,680 INFO sqlalchemy.engine.Engine [generated in 0.00026s] {'table_schema': 'testplatform', 'table_name': 'user'}
11. 2023-07-04 00:38:57,689 INFO sqlalchemy.engine.Engine
12. CREATE TABLE user (
13.         id INTEGER NOT NULL AUTO_INCREMENT,
14.         username VARCHAR(64) NOT NULL,
15.         password VARCHAR(128) NOT NULL,
16.         PRIMARY KEY (id),
17.         UNIQUE (username)
18. )
19. 2023-07-04 00:38:57,689 INFO sqlalchemy.engine.Engine [no key 0.00021s] {}
20. 2023-07-04 00:38:57,773 INFO sqlalchemy.engine.Engine COMMIT
21. Process finished with exit code 0

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• 查看数据库中是否创建成功
  
  
  

user表以及字段创建成功啦，以此类推所有的实体类一次性写好一起创建

来源:https://www.cnblogs.com/hnfangh/p/17524587.html
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