ad3bccf1f2
- "backend/models.py" - "backend/database.py" - "alembic/versions/001_initial.py" - "alembic/env.py" - "alembic.ini" - "alembic/script.py.mako" - "docker-compose.yml" - ".gsd/KNOWLEDGE.md" GSD-Task: S01/T02
26 lines
791 B
Python
26 lines
791 B
Python
"""Database engine, session factory, and declarative base for Chrysopedia."""
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import os
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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DATABASE_URL = os.getenv(
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"DATABASE_URL",
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"postgresql+asyncpg://chrysopedia:changeme@localhost:5433/chrysopedia",
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)
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engine = create_async_engine(DATABASE_URL, echo=False, pool_pre_ping=True)
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async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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class Base(DeclarativeBase):
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"""Declarative base for all ORM models."""
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pass
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async def get_session() -> AsyncSession: # type: ignore[misc]
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"""FastAPI dependency that yields an async DB session."""
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async with async_session() as session:
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yield session
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