Initial commit

app/api/db.py

@@ -0,0 +1,24 @@
+from sqlalchemy import create_engine, MetaData
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+from app.settings import DATABASE_URL
+
+# 创建SQLAlchemy引擎
+engine = create_engine(DATABASE_URL)
+
+# 创建元数据对象
+metadata = MetaData()
+
+# 创建会话工厂
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# 创建基类
+Base = declarative_base()
+
+# 依赖项：获取数据库会话
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()