问卷选择其他选项报错

app/controllers/poll_votes_controller.rb

@@ -46,9 +46,9 @@ class PollVotesController < ApplicationController
         if question_answer_ids.present?
           if question_answer_text.present?   #有文字输入，但是不存在其他选项的
             ques_vote_id = question_answer_ids.map(&:to_i).max
-            if user_votes.find_vote_text.present?
-              current_vote_text = user_votes.find_vote_text.first
-              current_vote_text.update_attribute("vote_text", question_answer_text)
+            ques_vote = user_votes.find_by(poll_answer_id: ques_vote_id)
+            if ques_vote.present?
+              ques_vote.update_attribute!("vote_text", question_answer_text)
             else
               answer_option = {
                 :user_id => current_user.id,
@@ -56,7 +56,7 @@ class PollVotesController < ApplicationController
                 :poll_answer_id => ques_vote_id,
                 :vote_text => question_answer_text
               }
-              PollVote.create(answer_option)
+              PollVote.create!(answer_option)
               # 重新取一次poll_votes
               user_votes = @poll_question.poll_votes.find_current_vote("user_id",current_user.id)
             end