简单题更新，未完

app/controllers/exercise_controller.rb

@@ -188,30 +188,43 @@ class ExerciseController < ApplicationController
     @exercise_question = ExerciseQuestion.find params[:exercise_question]
     @exercise_question.question_title = params[:question_title].nil? || params[:question_title].empty? ? l(:label_enter_single_title) : params[:question_title]
     @exercise_question.question_score = params[:question_score]
-    # 处理选项
+    # 处理选项:如果选了某个选项，那么则要删除之前的选项
     if params[:question_answer]
-      @exercise_question.exercise_choices.each do |answer|
-        answer.destroy unless params[:question_answer].keys.include? answer.id.to_s
-      end
+      # @exercise_question.exercise_choices.each do |answer|
+      #   answer.destroy unless params[:question_answer].keys.include? answer.id.to_s
+      # end
       for i in 1..params[:question_answer].count
         question = @exercise_question.exercise_choices.find_by_id params[:question_answer].keys[i-1]
         answer = (params[:question_answer].values[i-1].nil? || params[:question_answer].values[i-1].empty?) ? l(:label_new_answer) : params[:question_answer].values[i-1]
         if question
-          question.exercise_choices_id = i
-          question.answer_text = answer
+          question.choice_position = i
+          question.choice_text = answer
           question.save
         else
           question_option = {
-              :exercise_choice_id => i,
-              :answer_text => answer
+              :choice_position => i,
+              :choice_text => answer
           }
-          @exercise_question.exercise_answers.new question_option
+          @exercise_question.exercise_choices.new question_option
         end
       end
     end
-    @exercise_question.save
-    respond_to do |format|
-      format.js
+    # 更新标准答案
+    if params[:exercise_choice]
+      if @exercise_question.question_type == 3
+        for i in 1..params[:exercise_choice].count
+          question_standart = @exercise_question.exercise_standard_answers.find_by_id params[:exercise_choice].keys[i]
+          answer_standart = (params[:question_answer].values[i-1].nil? || params[:question_answer].values[i-1].empty?) ? l(:label_new_answer) : params[:question_answer].values[i-1]
+        end
+      else
+        answer_standart = @exercise_question.exercise_standard_answers.first
+        answer_standart.exercise_choice_id = params[:exercise_choice]
+        answer_standart.save
+      end
+      @exercise_question.save
+      respond_to do |format|
+        format.js
+      end
     end
   end
 
@@ -231,7 +244,7 @@ class ExerciseController < ApplicationController
     end
   end
 
-  #发布问卷
+  # 发布试卷
   def publish_excercise
     @exercise.exercise_status = 2
     @exercise.publish_time = Time.now
@@ -246,6 +259,19 @@ class ExerciseController < ApplicationController
     end
   end
 
+  # 重新发布试卷
+  def republish_excercise
+    @exercise.exercise_questions.each do |exercise_question|
+      exercise_question.exercise_ansers.destroy_all
+    end
+    # @poll.poll_users.destroy_all
+    # @poll.polls_status = 1
+    # @poll.save
+    # respond_to do |format|
+    #   format.js
+    # end
+  end
+
   def student_exercise_list
     @is_teacher = User.current.allowed_to?(:as_teacher,@course) || User.current.admin?
     @exercise = Exercise.find params[:id]
@@ -264,7 +290,7 @@ class ExerciseController < ApplicationController
     end
   end
 
-  # 学生提交答卷，选着答案的课程中提交
+  # 学生提交答卷，选中答案的过程中提交
   def commit_answer
     eq = ExerciseQuestion.find(params[:exercise_question_id])
     # 已提交过的则不允许答题

app/views/exercise/_edit_MC.html.erb

@@ -35,7 +35,7 @@
               <% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>
                   <li class="ur_item">
                     <label>选项<%=convert_to_char (index+1).to_s %><span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-                    <input maxlength="200" type='text' name='question_answer[<%=index %>]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
+                    <input maxlength="200" type='text' name='question_answer[<%=exercise_choice.id %>]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
                     <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
                     <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
                   </li>

app/views/exercise/_edit_MCQ.html.erb

@@ -9,7 +9,7 @@
             $("#poll_answers_<%=exercise_question.id%>").html("<% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>" +
                     "<li class='ur_item'>" +
                     "<label>选项<%=convert_to_char (index+1).to_s %><span class='ur_index'></span>：&nbsp;&nbsp;&nbsp;</label>" +
-                    "<input maxlength='200' type='text' name='question_answer[<%= index%>]' placeholder='输入选项内容' value='<%=exercise_choice.choice_text %>'/>" +
+                    "<input maxlength='200' type='text' name='question_answer[<%= exercise_choice.id %>]' placeholder='输入选项内容' value='<%=exercise_choice.choice_text %>'/>" +
                     "<a class='icon_add' title='向下插入选项' onclick='add_single_answer($(this));'></a>" +
                     "<a class='icon_remove'  title='删除' onclick='remove_single_answer($(this))'></a>" +
                     "</li>" +
@@ -35,7 +35,7 @@
             <% exercise_question.exercise_choices.reorder("choice_position").each_with_index do |exercise_choice,index| %>
                 <li class="ur_item">
                   <label>选项<%=convert_to_char (index+1).to_s %><span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-                  <input maxlength="200" type='text' name='question_answer[0]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
+                  <input maxlength="200" type='text' name='question_answer[<%= exercise_choice.id %>]' placeholder='输入选项内容' value="<%=exercise_choice.choice_text %>">
                   <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
                   <a class="icon_remove" title="删除" onclick="remove_single_answer($(this))"></a>
                 </li>

app/views/exercise/_edit_single.html.erb

@@ -34,7 +34,7 @@
             <% exercise_question.exercise_standard_answers.reorder("created_at").each_with_index do |exercise_choice,index| %>
                 <li class="ur_item">
                   <label>候选答案<span class="ur_index"></span>：&nbsp;&nbsp;&nbsp;</label>
-                  <input  name="exercise_choice[<%=index %>]" placeholder="请输入候选答案" type="text" value="<%=exercise_choice.answer_text %>"/>
+                  <input  name="exercise_choice[<%=exercise_choice.id %>]" placeholder="请输入候选答案" type="text" value="<%=exercise_choice.answer_text %>"/>
                   <a class="icon_add" title="向下插入选项" onclick="add_single_answer($(this));"></a>
                   <a class="icon_remove" title="删除" onclick="remove_single_answer($(this));"></a>
                 </li>