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docs2/dispatcher/class_based_handlers/callback_query.rst

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+====================
+CallbackQueryHandler
+====================
+
+There is base class for callback query handlers.
+
+Simple usage
+============
+.. code-block:: python
+
+    from aiogram.handlers import CallbackQueryHandler
+
+    ...
+
+    @router.callback_query()
+    class MyHandler(CallbackQueryHandler):
+        async def handle(self) -> Any: ...
+
+
+Extension
+=========
+
+This base handler is subclass of :ref:`BaseHandler <cbh-base-handler>` with some extensions:
+
+- :code:`self.from_user` is alias for :code:`self.event.from_user`
+- :code:`self.message` is alias for :code:`self.event.message`
+- :code:`self.callback_data` is alias for :code:`self.event.data`