Добавлен пример на CallbackPayload

examples/README.md

@@ -9,4 +9,5 @@
 - [Вебхуки](https://github.com/love-apples/maxapi/tree/main/examples/webhook) 
 - [Клавиатуры](https://github.com/love-apples/maxapi/tree/main/examples/keyboard/main.py) 
 - [Миддлварь в роутерах](https://github.com/love-apples/maxapi/tree/main/examples/middleware_for_router/main.py) 
- - [BaseFilter](https://github.com/love-apples/maxapi/tree/main/examples/base_filter/main.py) 
+- [Свой фильтр на BaseFilter](https://github.com/love-apples/maxapi/tree/main/examples/base_filter/main.py) 
+- [Фильтр callback payload](https://github.com/love-apples/maxapi/tree/main/examples/callback_payload/main.py) 

examples/callback_payload/main.py

@@ -0,0 +1,61 @@
+import asyncio
+import logging
+
+from maxapi import Bot, Dispatcher, F
+from maxapi.filters.callback_payload import CallbackPayload
+from maxapi.filters.command import CommandStart
+from maxapi.types import (
+    CallbackButton,
+    MessageCreated,
+    MessageCallback,
+)
+from maxapi.utils.inline_keyboard import InlineKeyboardBuilder
+
+logging.basicConfig(level=logging.INFO)
+
+bot = Bot('тут_ваш_токен')
+dp = Dispatcher()
+
+
+class MyPayload(CallbackPayload, prefix='mypayload'):
+    foo: str
+    action: str
+
+
+class AnotherPayload(CallbackPayload, prefix='another'):
+    bar: str
+    value: int
+
+
+@dp.message_created(CommandStart())
+async def show_keyboard(event: MessageCreated):
+    kb = InlineKeyboardBuilder()
+    kb.row(
+        CallbackButton( 
+            text='Первая кнопка',
+            payload=MyPayload(foo='123', action='edit').pack(), 
+        ), 
+        CallbackButton(
+            text='Вторая кнопка',
+            payload=AnotherPayload(bar='abc', value=42).pack(),
+        ),
+    )
+    await event.message.answer('Нажми кнопку!', attachments=[kb.as_markup()])
+
+
+@dp.message_callback(MyPayload.filter(F.foo == '123'))
+async def on_first_callback(event: MessageCallback, payload: MyPayload):
+    await event.answer(new_text=f'Первая кнопка: foo={payload.foo}, action={payload.action}')
+
+
+@dp.message_callback(AnotherPayload.filter())
+async def on_second_callback(event: MessageCallback, payload: AnotherPayload):
+    await event.answer(new_text=f'Вторая кнопка: bar={payload.bar}, value={payload.value}')
+
+
+async def main():
+    await dp.start_polling(bot)
+
+
+if __name__ == '__main__':
+    asyncio.run(main())