How to add buttons to state (telegram aiogram)?

Question

Python

I have a characterAge and characterBranch state, I want to create three Inline buttons when switching from the first state, how can I create them so that I can process the output only from these buttons?
my code:

class States(StatesGroup):
    characterAge = State()
    characterBranch = State()
#special - работа с бд
@dp.message_handler(state=States.characterAge, content_types=ContentTypes.TEXT)
async def characterAge(message: types.Message, state: FSMContext):
    try:
        int(message.text)
        special.add_new_character_age(message.text, message.from_user.username)
        await state.update_data(message=message.text.title())
        kb = InlineKeyboardMarkup()
        kb.add('Маг', 'Воин', 'Вор')
        await message.answer(text='Выберите одну из трех ветвей развития вашего персонажа(Влияет на диалоги)', reply_markup=kb)
        await States.characterBranch.set()
    except IndentationError:
        await message.reply('Существа не могут жить с отрицательным возрастом')
        return
    except NameError as err:
        print(err)
        await message.reply('Возраст не может состоять из букв')
        return

@dp.message_handler(state=States.characterBranch)
async def characterBranch(message: types.Message, state: FSMContext):
    if message.text not in ['Маг','Воин','Вор']:
        await message.answer('Для выбора ветви персонажа используйте кнопки!')
        return
    await state.update_data(characterBranch=message.text.lower())

    if message.text.lower == 'маг':
        special.add_new_character_branch('1', message.from_user.username)
    elif message.text.lower == 'воин':
        special.add_new_character_branch('2', message.from_user.username)
    elif message.text.lower == 'вор':
        special.add_new_character_branch('3', message.from_user.username)

    await message.answer()
    await state.finish()

Answer 1

Firstly:

kb = InlineKeyboardMarkup()
kb.add('Маг', 'Воин', 'Вор')

You are creating an inline keyboard here, but shove a simple text into it, although for this you have - InlineKeyboardButton, you set the text for it, and callback_data, which you then process using the decorator @dp.callback_query_handler. Everything you want
. That is, in your example it will look like this So:

class States(StatesGroup):
    characterAge = State()
    characterBranch = State()
#special - работа с бд
@dp.message_handler(state=States.characterAge, content_types=ContentTypes.TEXT)
async def characterAge(message: types.Message, state: FSMContext):
    try:
        int(message.text)
        special.add_new_character_age(message.text, message.from_user.username)
        await state.update_data(message=message.text.title())
        buttons = [InlineKeyboardButton('Маг', callback_data='branch:mag'),
                         InlineKeyboardButton('Маг', callback_data='branch:voin'),
                         InlineKeyboardButton('Маг', callback_data='branch:vor'),]
        kb = InlineKeyboardMarkup()
        kb.add(buttons)
        await message.answer(text='Выберите одну из трех ветвей развития вашего персонажа(Влияет на диалоги)', reply_markup=kb)
        await States.characterBranch.set()
    except IndentationError:
        await message.reply('Существа не могут жить с отрицательным возрастом')
        return
    except NameError as err:
        print(err)
        await message.reply('Возраст не может состоять из букв')
        return

@dp.callback_query_handler(Text(startswith='branch:'), state=States.characterBranch)
async def characterBranch(callback_query: types.CallbackQuery, state: FSMContext):
    branch_dict = {'mag': 'маг',
                            'voin': 'воин',
                            'vor': 'вор'}

    branch = callback_query.data.removeprefix('branch:')

    await state.update_data(characterBranch=branch_dict[branch])

    if branch == 'mag':
        special.add_new_character_branch('1', callback_query.from_user.username)
    elif branch == 'voin':
        special.add_new_character_branch('2', callback_query.from_user.username)
    elif branch == 'vor':
        special.add_new_character_branch('3', callback_query.from_user.username)

    await message.answer()
    await state.finish()