删除单选题后页面数据的删除，增加删除题目的路由及相关方法

app/controllers/poll_controller.rb

@@ -117,6 +117,21 @@ class PollController < ApplicationController
    a = 1
   end
 
+  #删除单选题
+  def delete_poll_question
+    @poll_question = PollQuestion.find params[:poll_question]
+    poll_questions = @poll_question.poll.poll_questions.where("question_number > #{@poll_question.question_number}")
+    poll_questions.each do |question|
+      question.question_number -= 1
+      question.save
+    end
+    if @poll_question && @poll_question.destroy
+      respond_to do |format|
+        format.js
+      end
+    end
+  end
+
   private
   def find_poll_and_course
     @poll = Poll.find params[:id]

app/views/poll/_show_MC.html.erb

@@ -9,7 +9,8 @@
     <%end%>
 
   </div>
-  <a class="ur_icon_de" title="删除" onclick=""></a>
+  <%= link_to("", delete_poll_question_poll_index_path(:poll_question => poll_question.id),
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de")  %>
   <a class="ur_icon_edit" title="编辑" onclick="pollQuestionEdit(<%= poll_question.id%>);"></a>
   <div class="cl"></div>
   <div class="ur_inputs">

app/views/poll/delete_poll_question.js.erb

@@ -0,0 +1 @@
+$("#poll_questions_<%= @poll_question.id%>").remove();

config/routes.rb

@@ -64,6 +64,9 @@ RedmineApp::Application.routes.draw do
       post 'create_poll_question'
       post 'update_poll_question'
     end
+    collection do
+      delete 'delete_poll_question'
+    end
   end
 
   resources :contest_notification