添加和编辑题目

app/controllers/exercise_controller.rb

@@ -21,7 +21,7 @@ class ExerciseController < ApplicationController
       render_403
       return
     end
-    #已提交问卷的用户不能再访问该界面
+    # 已提交问卷的用户不能再访问该界面
     if has_commit_exercise?(@exercise.id, User.current.id) && (!User.current.admin?)
       redirect_to poll_index_url(:course_id=> @course.id)
     else
@@ -67,20 +67,10 @@ class ExerciseController < ApplicationController
   end
 
   def destroy
-    if @exercise && @exercise.destroy
+
-      if @is_teacher
-        polls = Poll.where("polls_type = 'Course' and polls_group_id = #{@course.id}")
-      else
-        polls = Poll.where("polls_type = 'Course' and polls_group_id = #{@course.id} and polls_status = 2")
-      end
-      @polls = paginateHelper polls,20 #分页
-      respond_to do |format|
-        format.js
-      end
-    end
   end
 
-  #统计结果
+  # 统计结果
   def statistics_result
     @exercise = Exercise.find(params[:id])
     exercise_questions = @exercise.poll_questions
@@ -90,17 +80,16 @@ class ExerciseController < ApplicationController
     end
   end
 
-  #添加题目
+  # 添加题目
-  #question_type 1：单选 2：多选 3：填空题
+  # question_type 1：单选 2：多选 3：填空题
   def create_exercise_question
     question_title = params[:exercise_questions_title].nil? || params[:poll_questions_title].empty? ? l(:label_enter_single_title) : params[:poll_questions_title]
     option = {
-        :is_necessary => (params[:is_necessary]=="true" ? 1 : 0),
         :question_title => question_title,
         :question_type => params[:question_type] || 1,
-        :question_number => @poll.poll_questions.count + 1
+        :question_number => @exercise.exercise_questions.count + 1
     }
-    @poll_questions = @poll.poll_questions.new option
+    @exercise_questions = @exercise.exercise_questions.new option
     if params[:question_answer]
       for i in 1..params[:question_answer].count
         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]
@@ -108,15 +97,15 @@ class ExerciseController < ApplicationController
             :answer_position => i,
             :answer_text => answer
         }
-        @poll_questions.poll_answers.new question_option
+        @exercise_questions.poll_answers.new question_option
       end
     end
     # 如果是插入的话，那么从插入的这个id以后的question_num都将要+1
     if params[:quest_id]
       @is_insert = true
-      @poll.poll_questions.where("question_number > #{params[:quest_num].to_i}").update_all(" question_number = question_number + 1")
+      @exercise.exercise_questions.where("question_number > #{params[:quest_num].to_i}").update_all(" question_number = question_number + 1")
-      @poll_question_num = params[:quest_num].to_i
+      # @exercise_question_num = params[:quest_num].to_i
-      @poll_questions.question_number = params[:quest_num].to_i + 1
+      @exercise_questions.question_number = params[:quest_num].to_i + 1
     end
     if @poll_questions.save
       respond_to do |format|
@@ -126,6 +115,57 @@ class ExerciseController < ApplicationController
 
   end
 
+  # 修改题目
+  # params[:exercise_question]  The id of exercise_question
+  # params[:question_answer]  eg:A、B、C选项
+  def update_exercise_question
+    @exercise_question = ExerciseQuestion.find params[:exercise_question]
+    @exercise_questions.question_title = params[:exercise_questions_title].nil? || params[:exercise_questions_title].empty? ? l(:label_enter_single_title) : params[:exercise_questions_title]
+    ################处理选项
+    if params[:question_answer]
+      @exercise_question.exercise_answers.each do |answer|
+        answer.destroy unless params[:question_answer].keys.include? answer.id.to_s
+      end
+      # 界面需要判断选择题至少有一个选项
+      for i in 1..params[:question_answer].count
+        question = @exercise_question.exercise_answers.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.save
+        else
+          question_option = {
+              :exercise_choices_id => i,
+              :answer_text => answer
+          }
+          @exercise_question.exercise_answers.new question_option
+        end
+      end
+    end
+    @exercise_question.save
+    respond_to do |format|
+      format.js
+    end
+  end
+
+  # 删除题目
+  def delete_exercise_question
+    @exercise_question = ExerciseQuestion.find params[:exercise_question]
+    @exercise = @exercise_question.exercise
+    exercise_questions = @exercise.exercise_questions.where("question_number > #{@exercise_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
+
+
   #发布问卷
   def publish_excercise
     @exercise.exercise_status = 2