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

29 lines
700 B
Markdown

# CallbackQueryHandler
There is base class for callback query handlers.
## Simple usage:
```pyhton3
from aiogram.handlers import CallbackQueryHandler
...
@router.callback_query()
class MyHandler(CallbackQueryHandler):
async def handle(self) -> Any: ...
```
## Extension
This base handler is subclass of [BaseHandler](basics.md#basehandler) with some extensions:
- `self.from_user` is alias for `self.event.from_user`
- `self.message` is alias for `self.event.message`
- `self.callback_data` is alias for `self.event.data`
## Related pages
- [BaseHandler](basics.md#basehandler)
- [CallbackQuery](../../api/types/callback_query.md)
- [Router.callback_query](../router.md#callback-query)