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from __future__ import annotations
from typing import TYPE_CHECKING
from sqlalchemy import select
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
from litestar import Litestar, post
from litestar.plugins.sqlalchemy import SQLAlchemyInitPlugin, SQLAlchemySyncConfig
if TYPE_CHECKING:
from typing import Any, Dict, List
from sqlalchemy.orm import Session
class Base(DeclarativeBase): ...
class TodoItem(Base):
__tablename__ = "todo_item"
title: Mapped[str] = mapped_column(primary_key=True)
done: Mapped[bool]
@post("/", sync_to_thread=True)
def add_item(data: Dict[str, Any], db_session: Session) -> List[Dict[str, Any]]:
todo_item = TodoItem(**data)
with db_session.begin():
db_session.add(todo_item)
return [
{
"title": item.title,
"done": item.done,
}
for item in db_session.execute(select(TodoItem)).scalars()
]
def init_db(app: Litestar) -> None:
with config.get_engine().begin() as conn:
Base.metadata.create_all(conn)
config = SQLAlchemySyncConfig(connection_string="sqlite:///todo_sync.sqlite")
plugin = SQLAlchemyInitPlugin(config=config)
app = Litestar(route_handlers=[add_item], plugins=[plugin], on_startup=[init_db])
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