34 lines
859 B
Python
34 lines
859 B
Python
"""
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数据库连接配置 (新架构)
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使用 AsyncSession 支持异步操作
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"""
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import os
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from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
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from sqlalchemy.orm import declarative_base
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from dotenv import load_dotenv
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load_dotenv()
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# 数据库连接 URL
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DATABASE_URL = f"postgresql+asyncpg://{os.getenv('DB_USER')}:{os.getenv('DB_PASSWORD')}@{os.getenv('DB_HOST')}:{os.getenv('DB_PORT')}/{os.getenv('DB_NAME')}"
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# 创建异步引擎
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engine = create_async_engine(
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DATABASE_URL,
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echo=False, # 设置为 True 可以看到 SQL 日志
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future=True
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)
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# 创建异步 Session 工厂
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SessionLocal = async_sessionmaker(
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engine,
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class_=AsyncSession,
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expire_on_commit=False
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)
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# Dependency
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async def get_db():
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"""获取数据库会话"""
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async with SessionLocal() as session:
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yield session
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