non-summary question edit bug fix

app/controllers/quiz_controller.rb

@@ -48,8 +48,8 @@ class QuizController < ApplicationController
     def answer_params
       params.require(:answer).permit(
         :question_id,
-        :answer_id,
         :answer,
+        :answer_id,
         answer_array: [],
         answer_hash: [:later, :html, :css, :js, :text, :other, options: []]
       )
@@ -61,8 +61,6 @@ class QuizController < ApplicationController
       answer[:submitted] = params.key?(:submit)
       answer[:answer] = answer_params[:answer_array] unless answer_params[:answer_array].nil?
       answer[:answer] = answer_params[:answer_hash].to_h unless answer_params[:answer_hash].nil?
-      answer.delete(:answer_array)
-      answer.delete(:answer_hash)
       answer
     end
 

app/models/answer.rb

@@ -7,4 +7,12 @@ class Answer < ApplicationRecord
   validates :candidate_id, presence: true
   validates :question_id, presence: true
   validates :answer, answer_format: true
+
+  # Throw away attributes
+  #   convenience for form manipulation
+  def answer_array=(val); end
+
+  def answer_hash=(val); end
+
+  def answer_id=(val); end
 end