CODEWITHSUNDEEP
ruby-on-railsruby
mohamed
mohamed

Reputation: 135

How to use observer gem in rails

It is the first time to interact with observer gem, and after reading the wiki i just cant get it how would it send a message after creating some record in the database here is the code i used from the git hub wiki with changing the names to an existing model name in my project:

  class CommentObserver < ActiveRecord::Observer
      def after_save(comment)
        Notifications.comment("[email protected]", "New comment was posted", comment).deliver
      end
    end

i dont know what this function do can anyone please explain it to me as it is not clear in the wiki,Thanks.

Upvotes: 0

Views: 130

Answers (1)

level0
level0

Reputation: 343

The after_save callback method is overridden to send a email notification. callbacks are methods which are called at specific points(moment) during the creation of an object. so here the after_save is called when an Object of type Comment is saved. you can read more about callbacks here.

Upvotes: 1

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