CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4ruby-on-rails-3.2
Braham Shakti
Braham Shakti

Reputation: 1456

How to get associated object created using after_create callback in rails transaction

I have method which is saving my session and event

def create_session
   new_session = NewSession.new
   new_session.transaction do
       new_session.name = 'Somename'
       ....
       new_session.save!
       event =  new_session.event        #returning nil why?
       puts event.new_session 
   end
end

My NewSession class 

class NewSession < ActiveRecord::Base    
   has_one :event, :class_name => SessionEvent, :dependent => :delete
   after_create :create_event

   def create_event
       SessionEvent.create(:name => 'Eventname', :new_session => self)
   end 

end

Now How can I get associated object created using after_create callback in rails transaction

Upvotes: 1

Views: 2294

Answers (3)

Chitra
Chitra

Reputation: 1394

after_create() -

Is called after Base.save on new objects that haven’t been saved yet (no record exists). 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.

so I w'll suggest you to use after_save callback

Upvotes: 0

Gaurav Gupta
Gaurav Gupta

Reputation: 1191

Try to do this:

class NewSession < ActiveRecord::Base    
   has_one :event
   after_create :create_event

   def create_event
     self.event.create(:name => 'Eventname')
   end 

end

But make sure that you have 'new_session_id' in your events table, if not then add it to events table or define foreign_key in you association as:

 has_one :event, :foreign_key => "new_session"

and now use your own model code.

EDIT

Rather then save whole 'self' in event model you just save 'self.id' as:

def create_event
   Event.create(:name => 'Eventname', :new_session => self.id)
end

And define you assoication as I suggested above has_one :event, :foreign_key => "new_session"

Hope this will help you.

Upvotes: 1

Prashant4224
Prashant4224

Reputation: 1601

Make sure that you have 'new_session_id' in your events table, then

class NewSession < ActiveRecord::Base    
  has_one :event
  after_create :create_event

  def create_event
     self.event.create(:name => 'Eventname')
  end 

end

Upvotes: 0

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