aiogram/docs/dispatcher/class_based_handlers/shipping_query.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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# ShippingQueryHandler
There is base class for callback query handlers.
## Simple usage:
```pyhton3
from aiogram.handlers import ShippingQueryHandler
...
@router.shipping_query()
class MyHandler(ShippingQueryHandler):
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`
## Related pages
- [BaseHandler](basics.md#basehandler)
- [ShippingQuery](../../api/types/shipping_query.md)
- [Router.shipping_query](../router.md#shipping-query)