Migrate registration attributes to questions

app/models/qanswer.rb

@@ -5,4 +5,6 @@ class Qanswer < ActiveRecord::Base
   belongs_to :answer, dependent: :delete
 
   has_and_belongs_to_many :registrations
+
+  validates :question, :answer, presence: true
 end

app/models/question.rb

@@ -7,8 +7,13 @@ class Question < ActiveRecord::Base
   has_many :qanswers, dependent: :delete_all
   has_many :answers, through: :qanswers, dependent: :delete_all
 
-  validates :title, presence: true
-  validates :answers, presence: true
-
+  validates :title, :question_type_id, presence: true
+  validate :existing_answers
   accepts_nested_attributes_for :answers, allow_destroy: true
+
+  private
+
+  def existing_answers
+    errors.add(:base, 'The question must have answers') if self.answers.blank?
+  end
 end

app/models/registration.rb

@@ -11,10 +11,8 @@ class Registration < ActiveRecord::Base
   has_many :events_registrations
   has_many :workshops, through: :events_registrations, source: :event
 
-  attr_accessible :user_id, :conference_id, :attending_social_events, :attending_with_partner,
-                  :using_affiliated_lodging, :arrival, :departure, :user_attributes, :attended,
-                  :other_dietary_choice, :dietary_choice_id, :handicapped_access_required,
-                  :social_event_ids, :other_special_needs,
+  attr_accessible :user_id, :conference_id, :arrival, :departure, :user_attributes, :attended,
+                  :other_dietary_choice, :dietary_choice_id, :social_event_ids, :other_special_needs,
                   :event_ids, :volunteer, :vchoice_ids, :qanswer_ids, :qanswers_attributes
 
   accepts_nested_attributes_for :user