Custom callback

Question

• How to implement a custom call_back and then register the method in an observer?

• If we use a transaction in the model, is after_create triggered for each individual record within the transaction, or is it run after the transaction is completed?

Using Rails 3

thanks

Answer 1

• You add a method, say after_something to your observer, and then issue notify_observers (: after_something) to your code in the model. The method will receive an instance of the model as a parameter.

• after_create is called for the observer of the class whose instance was created. Each instance.