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method

after_save

rails latest stable - Class: ActiveRecord::Callbacks

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v2.3.8) is shown here.

after_save()
public

Is called after Base.save (regardless of whether it’s a create or update save). Note that this callback is still wrapped in the transaction around save. For example, if you invoke an external indexer at this point it won’t see the changes in the database. 

 class Contact < ActiveRecord::Base
   after_save { logger.info( 'New contact saved!' ) }
 end

2Notes

Return True

actsasflinn · Jul 28, 20098 thanks

As is the case with the before_validation and before_save callbacks, returning false will break the callback chain. For example, the expire_cache_id method will not run if Rails.cache.expire returns false (as it will if the key is not cached with memcache).

=== Returning False Example (Bad)

after_save :expire_cache_by_name
after_save :expire_cache_by_id

def expire_cache_by_name
Rails.cache.expire("my_object:name:#{self.name}")
end

def expire_cache_by_id
Rails.cache.expire("my_object:#{self.id}")
end

=== Returning True Example (Good)

def expire_cache_by_name
Rails.cache.expire("my_object:name:#{self.name}")
return true
end

def expire_cache_by_id
Rails.cache.expire("my_object:#{self.id}")
return true
end

gives a parameter

rogerdpack · Mar 10, 20141 thank

As a note, you can use it like this:

after_save {|instance|

}

it will pass in the instance being saved.