aiogram/docs/dispatcher/class_based_handlers/message.md
mpa 4124770b0e refactor(handler): rename observers
Rename observers but with backward compatibility, relevant documentation
2020-05-10 03:02:31 +04:00

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# MessageHandler
There is base class for message handlers.
## Simple usage:
```pyhton3
from aiogram.handlers import MessageHandler
...
@router.message()
class MyHandler(MessageHandler):
async def handle(self) -> Any:
return SendMessage(chat_id=self.chat.id, text="PASS")
```
## Extension
This base handler is subclass of [BaseHandler](basics.md#basehandler) with some extensions:
- `self.chat` is alias for `self.event.chat`
- `self.from_user` is alias for `self.event.from_user`
## Related pages
- [BaseHandler](basics.md#basehandler)
- [Message](../../api/types/message.md)
- [Router.message](../router.md#message)
- [Router.edited_message](../router.md#edited-message)
- [Router.channel_post](../router.md#channel-post)
- [Router.edited_channel_post](../router.md#edited-channel-post)