Filter CommandMk2 Aiogram 3

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Improved command filter

class RestrictModel(BaseModel):
    period: date
    reason: Optional[str]


@router.message(CommandMk2('ban {period} {reason}', response_model=RestrictModel, response_model_name='vars'))
async def ban_user(message: Message, period: date, reason: Optional[str]):
    ...

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Diff:

• Command arguments parsing, not just leaving single string like built-in aiogram filter
• Command arguments separation and validation using Pydantic model.

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Doc is available here