Rails3 - Adding default values to associated table after_create

Question

I'am looking for a way to add intiatlize an associated DB after the parent is created.

I have a simple User model with just the filed username and a related (has_many) child Place model with the field placenames.

After the user was created succsefully, the table of Places should be filled with entry's like: europe, asia, afrika. I think the way to go is to use the after_create method but i can't find how to trigger the creation from my parent model.

Baldrick · Accepted Answer · 2012-02-29 16:08:06Z

3

You can declare the after_create like this

class User 

  after_create :initialize_places

  def initialize_places
    self.places.create(:placename => 'Europe')
    self.places.create(:placename => 'Asia')
    self.places.create(:placename => 'Africa')
  end
end

And create the user like this

user = User.create(:username => 'The Black Adder')

edited Feb 29, 2012 at 16:08

answered Feb 29, 2012 at 16:01

Baldrick

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2 Comments

Baldrick Over a year ago

@JochenLeinberger Good. If the solution is OK, you should accept the answer. Thank you.

JOxBERGER Over a year ago

@Baldrick... sorry just accepeted it! Thanks again!

Marku Seeger · Accepted Answer · 2012-02-29 15:56:43Z

0

Hm, not sure what exactly it is you're trying to do.

Are you getting the places to associate the user with from the #create form (e.g. the user can tick off predefined places with checkboxes)? Or can the user supply places via a comma-separated list and the user creation action should weed out duplicates and add new ones to the db on the fly?

answered Feb 29, 2012 at 15:56

Marku Seeger

1

1 Comment

JOxBERGER Over a year ago

hi, the idea was to populate the child table of each users with a predefined set of values whenever a new user was created. Thanks!

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