aiogram3-di 1.0.9

Dependency Injection implementation for aiogram 3.

Example of usage

import logging
from os import getenv
from typing import Annotated

from aiogram import Router, Bot, Dispatcher
from aiogram.types import Message
from aiogram3_di import DIMiddleware, Depends

router = Router()


def get_user_full_name(event: Message) -> str:
    return event.from_user.full_name


@router.message()
async def _(message: Message, full_name: Annotated[str, Depends(get_user_full_name)]) -> None:
    await message.answer(f'Hi {full_name}')


def main() -> None:
    logging.basicConfig(level=logging.INFO)

    bot = Bot(token=getenv('BOT_TOKEN'))

    dp = Dispatcher()
    dp.include_router(router)
    dp.message.middleware(DIMiddleware())  # register Dependency Injection middleware
    dp.run_polling(bot)


if __name__ == '__main__':
    main()

Handler Dependencies.

You can use Depends in the flags parameter of the handler, for example:

flags={'dependencies': [Depends(verify_user)]}

Global Dependencies.

You can use Depends in dispatcher, for example:

dp = Dispatcher()
dp.dependencies = [Depends(verify_user)]

Or in router, for example:

router = Router()
router.dependencies = [Depends(verify_user)]

Details

It is inspired by FastAPI.

If you define a normal def, your function will be called in a different thread.

License

MIT