Handling migration to supergroup

[evgensetrov]

1. What version of pyTelegramBotAPI are you using? 4.6.0

2. What OS are you using? Windows 11 & Ubuntu 20.04

3. What version of python are you using? 3.8

Hi! When a group is migrated to a supergroup, the chat.id changes, for example: it was -685960703, became -1001502049385. At the time of migration, the bot receives two updates - message objects with the migrate_to_chat_id and migrate_from_chat_id fields, however, using the message_handler decorator, these updates cannot be caught.

Since chat.id is written to the database for further filtering of messages, I need to somehow catch the moment the chat.id changes. Any ideas? Thanks!

[coder2020official]

You need to create a message handler with content_types=['migrate_to_chat_id']