Subscribe the bot to new posts from the channel

[tetelevm]

My bot needs to get information about posts in the channel. As far as I know, the bot can only get information about new posts, and I'm generally okay with a solution for new posts only. But I have a new problem - I can't receive messages from the channel.

What I did: I signed the bot to the channel (gave it admin rights) and inserted print(update) in the app.process_update method (inside the ptb). But nothing comes to me when a new post in the channel was posted.

Is there any example/manual of how to properly solve this problem? (And is it even possible?)

[harshil21]

Yes, it is possible to solve this easily. There is no need to use app.process_update for this. Just register a MessageHandler with the filter filters.ALL or filters.TEXT. And it will catch channel posts.

There is an example for this, echobot.py

[tetelevm]

Yay, it worked. It turned out that the problem was not with the handlers, but with using allowed_updates when starting the bot:

await app.updater.start_polling(allowed_updates=[Update.CHANNEL_POST, Update.POLL_ANSWER])

But thanks anyway!