CallbackData class added

examples/CallbackData_example.py

@@ -0,0 +1,86 @@
+# -*- coding: utf-8 -*-
+"""
+This Example will show you how to use CallbackData
+"""
+
+from telebot.callback_data import CallbackData, CallbackDataFilter
+from telebot import types, TeleBot
+from telebot.custom_filters import AdvancedCustomFilter
+
+API_TOKEN = '1802978815:AAG6ju32eC-O3s8WRg57BRCT64VkJhQiHNk'
+PRODUCTS = [
+    {'id': '0', 'name': 'xiaomi mi 10', 'price': 400},
+    {'id': '1', 'name': 'samsung s20', 'price': 800},
+    {'id': '2', 'name': 'iphone 13', 'price': 1300}
+]
+
+bot = TeleBot(API_TOKEN)
+products_factory = CallbackData('product_id', prefix='products')
+
+
+def products_keyboard():
+    return types.InlineKeyboardMarkup(
+        keyboard=[
+            [
+                types.InlineKeyboardButton(
+                    text=product['name'],
+                    callback_data=products_factory.new(product_id=product["id"])
+                )
+            ]
+            for product in PRODUCTS
+        ]
+    )
+
+
+def back_keyboard():
+    return types.InlineKeyboardMarkup(
+        keyboard=[
+            [
+                types.InlineKeyboardButton(
+                    text='⬅',
+                    callback_data='back'
+                )
+            ]
+        ]
+    )
+
+
+class ProductsCallbackFilter(AdvancedCustomFilter):
+    key = 'config'
+
+    def check(self, call: types.CallbackQuery, config: CallbackDataFilter):
+        return config.check(query=call)
+
+
+@bot.message_handler(commands=['products'])
+def products_command_handler(message: types.Message):
+    bot.send_message(message.chat.id, 'Products:', reply_markup=products_keyboard())
+
+
+# Only product with field - product_id = 2
+@bot.callback_query_handler(func=None, config=products_factory.filter(product_id='2'))
+def product_one_callback(call: types.CallbackQuery):
+    bot.answer_callback_query(callback_query_id=call.id, text='Not available :(', show_alert=True)
+
+
+# Any other products
+@bot.callback_query_handler(func=None, config=products_factory.filter())
+def products_callback(call: types.CallbackQuery):
+    callback_data: dict = products_factory.parse(callback_data=call.data)
+    product_id = int(callback_data['product_id'])
+    product = PRODUCTS[product_id]
+
+    text = f"Product name: {product['name']}\n" \
+           f"Product price: {product['price']}"
+    bot.edit_message_text(chat_id=call.message.chat.id, message_id=call.message.message_id,
+                          text=text, reply_markup=back_keyboard())
+
+
+@bot.callback_query_handler(func=lambda c: c.data == 'back')
+def back_callback(call: types.CallbackQuery):
+    bot.edit_message_text(chat_id=call.message.chat.id, message_id=call.message.message_id,
+                          text='Products:', reply_markup=products_keyboard())
+
+
+bot.add_custom_filter(ProductsCallbackFilter())
+bot.infinity_polling()