How can we make an event to trigger when something published from specific Publication?

Question

How can we make an event to trigger when component published from a specific Publication?

Answer 1

The event handlers (triggers) are system-wise, so you will have to control the publication scope from within the event itself. I would check it at the very beginning, see the example below:

[TcmExtension("YourEventSystem")]
public class YourEvent: TcmExtension
    {

        public YourEvent()
        {            
            Subscribe();
        }

        public void Subscribe()
        {
            EventSystem.Subscribe<RepositoryLocalObject, CheckInEventArgs>(HandlerForInitiated, EventPhases.Initiated);
        }


        private void HandlerForInitiated(RepositoryLocalObject subject, CheckInEventArgs args, EventPhases phase)
        {
            //Check for publication id match here
            if (subject.OwningRepository.Id != "your_publication_uri")
            {
                return;
            }
            //Your logic here...
        }
}