Methods
Public Instance methods
observers=(*observers)

Activates the observers assigned. Examples:

  # Calls PersonObserver.instance
  ActiveRecord::Base.observers = :person_observer

  # Calls Cacher.instance and GarbageCollector.instance
  ActiveRecord::Base.observers = :cacher, :garbage_collector

  # Same as above, just using explicit class references
  ActiveRecord::Base.observers = Cacher, GarbageCollector
    # File vendor/rails/activerecord/lib/active_record/observer.rb, line 21
21:       def observers=(*observers)
22:         observers = [ observers ].flatten.each do |observer| 
23:           observer.is_a?(Symbol) ? 
24:             observer.to_s.camelize.constantize.instance :
25:             observer.instance
26:         end
27:       end