rails. How to make triggers in CRM?

Question

CRM

You can do tasks in the CRM.
How to make a new task to be created after the execution of a task.
I know about before_action but don't know how to design it.
I will be glad to any ideas.

Answer 1

after_update :create_new_task, if: :completed?
def create_new_task
  self.class.create(title: 'Your new task', user_id: user_id)
end