default for serialized column in activerecord migration

Question

so i have a serialized column :dimensions, and in my migration, i would like to set the field to be a default hash.

i have tried...

create_table :shippin         


        

Answer 1

I tried this code and it worked for me. This takes advantage of the way ActiveRecord sends model methods synced to table columns dynamically.

class MyModel < ActiveRecord::Base

  def dimensions_in
    attributes["dimensions_in"] ||= {:width => 0, :height => 0, :depth => 0}
  end

end