Newbie Question (belongs_to and has_many)

rubyonrails-talk
1

  has_many :test_questions

  def add_question(question)     @test_questions << question   end

try this instead:

def add_question(question)    test_questions << question end

'test_questions' is not an instance variable (words proceeded by @ signs), it is a method added by has_many.

Hope that helps,

Steve