[MODEL] Added callback in the activerecord_associations.rb example

Author: karmi

elasticsearch-model/examples/activerecord_associations.rb

@@ -68,6 +68,8 @@ class Category < ActiveRecord::Base
 class Author < ActiveRecord::Base
   has_many :authorships
 
+  after_update { self.authorships.each(&:touch) }
+
   def full_name
     [first_name, last_name].compact.join(' ')
   end