ActiveRecord: How can I clone nested associations?

Question

I\'m currently cloning a single-level association like this:

class Survey < ActiveRecord::Base
  def duplicate
    new_template = self.clone
    new_templ         


        

Answer 1

You can also alias the rails dup method, as follows:

class Survey
   has_many :questions, :inverse_of=>:survey, :autosave=>true
   alias orig_dup dup
   def dup
       copy=orig_dup
       copy.questions=questions
       copy
   end
end

class Questions
   belongs_to :survey, :inverse_of=>:questions
   has_many :answers, :inverse_of=>:question, :autosave=>true
   alias orig_dup dup
   def dup
       copy=orig_dup
       copy.answers=answers
       copy
   end
end

class Answer
    belongs_to :question
end

and then you can do this

aaa = Survey.find(123).dup
aaa.save