35 lines
1.2 KiB
Python
35 lines
1.2 KiB
Python
import os
|
|
|
|
from sqlalchemy import create_engine
|
|
from sqlalchemy.orm import declarative_base, sessionmaker
|
|
|
|
# 优先读取环境变量(Docker 部署用)；默认值与原硬编码配置一致，本地开发不受影响
|
|
MYSQL_USER = os.getenv("MYSQL_USER", "root")
|
|
MYSQL_PASSWORD = os.getenv("MYSQL_PASSWORD", "123456")
|
|
MYSQL_HOST = os.getenv("MYSQL_HOST", "localhost")
|
|
MYSQL_PORT = os.getenv("MYSQL_PORT", "3306")
|
|
MYSQL_DB = os.getenv("MYSQL_DB", "student_manager")
|
|
|
|
db_url = f"mysql+pymysql://{MYSQL_USER}:{MYSQL_PASSWORD}@{MYSQL_HOST}:{MYSQL_PORT}/{MYSQL_DB}?charset=utf8mb4"
|
|
engine = create_engine(db_url, pool_size=5, pool_pre_ping=True)
|
|
Base = declarative_base()
|
|
SessionLocal = sessionmaker(bind=engine)
|
|
|
|
def get_db():
|
|
db = SessionLocal()
|
|
try:
|
|
yield db
|
|
finally:
|
|
db.close()
|
|
|
|
def init_db():
|
|
"""导入所有模型并建表，避免任何入口文件漏导入"""
|
|
import model # noqa: F401 —— 触发 model/__init__.py 注册所有类
|
|
Base.metadata.create_all(bind=engine)
|
|
|
|
|
|
def reset_db():
|
|
"""开发环境重建所有表"""
|
|
import model # noqa: F401
|
|
Base.metadata.drop_all(bind=engine)
|
|
Base.metadata.create_all(bind=engine) |