I am trying to message users who are  in a specific group with the message channel  by clicking a button.

I tried message_post and message_subscribe, not work ideally.

I refered the base_tier_validation but I found that the base_tier_validation uses getattr(self, post) or getattr(self, subscribe).

Got no clue to archieve it.

Can anybody tell me how to achieve this? Thank you and Regards.