AutoCommit Don Jul 30 02:03:02 CEST 2015

app/models/survey/question.rb

@@ -13,10 +13,11 @@ class Survey::Question < ActiveRecord::Base
   end
 
   def do_answer(choice_ids, user)
-    self.answers.where(user_id: user.id).each {|a| a.delete}
-    choice_ids.each do |c|
+    cid=choice_ids.map{|c|c.to_i}
+    Survey::Answer.where(user_id: user.id, choice_id: self.choice_ids).delete_all
+    cid.each do |c|
       if self.choice_ids.include?(c)
-      a=Survey::Answer.new(user_id: user.id, choice_id: c)
+      a=Survey::Answer.new(user_id: user.id, choice_id: c.to_i)
       a.save
       end
     end