1.增加修改单选题时页面js的刷新

2.修改单选题时删除某些选项有误

app/controllers/poll_controller.rb

@@ -122,7 +122,7 @@ class PollController < ApplicationController
     ################处理选项
     if params[:question_answer]
       @poll_question.poll_answers.each do |answer|
-        @poll_question.poll_answers.destroy answer unless params[:question_answer].keys.include? answer.id.to_s
+        answer.destroy unless params[:question_answer].keys.include? answer.id.to_s
       end
       for i in 1..params[:question_answer].count
         question = @poll_question.poll_answers.find_by_id params[:question_answer].keys[i-1]

app/views/poll/_poll_question.html.erb

@@ -0,0 +1,12 @@
+<tbody>
+<% poll_question.poll_answers.reorder("answer_position").each do |poll_answer| %>
+    <tr>
+      <td>
+        <label>
+          <input class="ur_radio" type="radio" name="<%= poll_question  %>" value="<%= poll_answer.answer_text%>" >
+          <%= poll_answer.answer_text%>
+        </label>
+      </td>
+    </tr>
+<% end %>
+</tbody>

app/views/poll/update_poll_question.js.erb

@@ -1,2 +1,6 @@
-
-pollQuestionCancel(<%= @poll_question.id%>);
+$("#poll_questions_<%= @poll_question.id%>").html("<div id='show_poll_questions_<%= @poll_question.id %>'>" +
+        "<%= escape_javascript(render :partial => 'show_MC', :locals => {:poll_question => @poll_question}) %>" +
+   "</div>" +
+   "<div id='edit_poll_questions_<%= @poll_question.id %>' style='display: none;'>" +
+        "<%= escape_javascript(render :partial => 'edit_MC', :locals => {:poll_question => @poll_question}) %>" +
+   "</div>");