diff --git a/app/controllers/exercise_answers_controller.rb b/app/controllers/exercise_answers_controller.rb
index cad482390..aa3966d25 100644
--- a/app/controllers/exercise_answers_controller.rb
+++ b/app/controllers/exercise_answers_controller.rb
@@ -97,7 +97,7 @@ class ExerciseAnswersController < ApplicationController
     @exercise = @exercise_question&.exercise
     @course = @exercise&.course
     @exercise_user = @exercise&.exercise_users.find_by(user_id: current_user.id) #当前用户
-    @exercise_user_status = @exercise.get_exercise_status(current_user.id)
+    @exercise_user_status = @exercise.get_exercise_status(current_user)
 
     if @exercise_question.blank?
       normal_status(-1,"试卷问题不存在！")
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 30cc51dc2..ea424a411 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -49,11 +49,6 @@ class ExercisesController < ApplicationController
             # 已发布 当前用户班级分组的 试卷id
             not_exercise_ids = @course.exercise_group_settings.exercise_group_not_published.where("course_group_id = #{@member_group_id}").pluck(:exercise_id)
             @exercises = member_show_exercises.where.not(id: not_exercise_ids)
-            # exercise_settings_ids = @course.exercise_group_settings.exercise_group_published
-            #                             .where(course_group_id: member_group_id).pluck(:exercise_id).uniq
-            # @exercises = member_show_exercises.exists? ?
-            #                  member_show_exercises.unified_setting.or(member_show_exercises.where(id: exercise_settings_ids))
-            #                  : []
           end
         else  #用户未登陆或不是该课堂成员,仅显示统一设置的（已发布的/已截止的），如有公开，则不显示锁，不公开，则显示锁
           @is_teacher_or = 0
@@ -210,7 +205,7 @@ class ExercisesController < ApplicationController
           @user_exercise_answer = 3  #教师页面
           @user_commit_counts = @exercise.exercise_users.where(commit_status:1).count   #已提交的用户数
         end
-        @ex_status = @exercise.get_exercise_status(current_user.id)
+        @ex_status = @exercise.get_exercise_status(current_user)
 
         exercise_id_array = [@exercise.id]
         @exercise_publish_count = get_user_permission_course(exercise_id_array,2).count   #是否存在已发布的
@@ -448,7 +443,7 @@ class ExercisesController < ApplicationController
         # course_group_ids = @course.teacher_course_group_ids(current_user.id)  #当前老师的班级id数组
         course_group_ids = @course.charge_group_ids(current_user)  #当前老师的班级id数组
 
-        exercise_status = @exercise.get_exercise_status(current_user.id)
+        exercise_status = @exercise.get_exercise_status(current_user)
 
         if exercise_status == 1 && course_group_ids.size > 0 # 试卷未发布，且老师的分班大于1 ，才可以修改统一设置，否则按试卷默认的来处理
           unified_setting = params[:unified_setting]
@@ -802,7 +797,7 @@ class ExercisesController < ApplicationController
         check_ids = Exercise.where(id:params[:check_ids])
         course_students = @course.students #课堂的全部学生数
         check_ids.each do |exercise|
-          exercise_status= exercise.get_exercise_status(current_user.id)
+          exercise_status= exercise.get_exercise_status(current_user)
           if exercise_status == 2  #跳过已截止的或未发布的
             g_course = params[:group_ids]
             if g_course.present?
@@ -897,7 +892,7 @@ class ExercisesController < ApplicationController
         ex_question_ids = @exercise.exercise_questions.pluck(:id)
         exercise_user = @exercise.exercise_users.exercise_commit_users(current_user.id).first
         if exercise_user.present?
-          if exercise_user.commit_status == 1 && @exercise.get_exercise_status(current_user.id) == 2  #用户已提交且试卷提交中
+          if exercise_user.commit_status == 1 && @exercise.get_exercise_status(current_user) == 2  #用户已提交且试卷提交中
             if @exercise.time == -1 || ((Time.now.to_i - exercise_user.start_at.to_i) < @exercise.time.to_i * 60)
               exercise_user.update_attributes(:score => nil, :end_at => nil, :status => nil, :commit_status => 0,
                                               :objective_score => 0.0, :subjective_score => -1.0)
@@ -1024,7 +1019,7 @@ class ExercisesController < ApplicationController
         #   @user_left_time = (time_mill < exercise_user_left_time) ? nil : (time_mill - exercise_user_left_time)   #当前用户对试卷的回答剩余时间
         # end
 
-        @t_user_exercise_status = @exercise.get_exercise_status(current_user.id)
+        @t_user_exercise_status = @exercise.get_exercise_status(current_user)
 
         @user_left_time = nil
         if @user_course_identity < Course::STUDENT || (@t_user_exercise_status == 3) ||
@@ -1137,7 +1132,7 @@ class ExercisesController < ApplicationController
         # @exercise_answerer = User.find_by(id:@exercise_current_user_id)  #试卷回答者
         @exercise_questions = @exercise.exercise_questions.order("question_number ASC")
         @question_status = []
-        get_exercise_status = @exercise.get_exercise_status(current_user.id)
+        get_exercise_status = @exercise.get_exercise_status(current_user)
         if @ex_user.present? && @is_teacher_or == 0
           if get_exercise_status == 2  #当前用户已提交，且试卷未截止
             if @ex_user.commit_status == 0   #学生未提交，且当前为学生
@@ -1165,7 +1160,7 @@ class ExercisesController < ApplicationController
       begin
         @current_user_id = current_user.id
         exercise_ids = [@exercise.id]
-        @exercise_status = @exercise.get_exercise_status(current_user.id)
+        @exercise_status = @exercise.get_exercise_status(current_user)
         @course_all_members = @course.students
         @c_group_counts = @course.course_groups_count
         question_types = @exercise.exercise_questions.pluck(:question_type).uniq
@@ -1370,7 +1365,7 @@ class ExercisesController < ApplicationController
         @exercise_commit_users = @exercise_all_users.commit_exercise_by_status(1)   #试卷的已提交用户
         @exercise_commit_user_ids = @exercise_commit_users.pluck(:user_id).uniq  #已提交试卷的全部用户id
         @exercise_commit_user_counts = @exercise_commit_users.count   #试卷的已提交用户人数
-        @exercise_status = @exercise.get_exercise_status(current_user.id)
+        @exercise_status = @exercise.get_exercise_status(current_user)
 
         #提交率
         if @course_all_members_count == 0
@@ -1552,7 +1547,7 @@ class ExercisesController < ApplicationController
     exercises_all.each do |exercise|
       if exercise.present?
         if exercise.unified_setting  #统一设置只有两种情况，全部发布，全部截止
-          exercise_user_status = exercise.get_exercise_status(current_user.id)   #当前用户的能看到的试卷
+          exercise_user_status = exercise.get_exercise_status(current_user)   #当前用户的能看到的试卷
           if exercise_user_status == exercise_status || exercise_status == 3 #未发布的情况
             unpublish_group = unpublish_group + user_groups_id
           else
@@ -1622,7 +1617,7 @@ class ExercisesController < ApplicationController
 
   ## 判断开始答题页面的用户权限
   def check_user_on_answer
-    if @user_course_identity == Course::STUDENT && @exercise.get_exercise_status(current_user.id) == 1   #试卷未发布，且当前用户不为老师/管理员
+    if @user_course_identity == Course::STUDENT && @exercise.get_exercise_status(current_user) == 1   #试卷未发布，且当前用户不为老师/管理员
       normal_status(-1, "未发布试卷！")
     elsif @user_course_identity > Course::STUDENT && (!@exercise.is_public || (@exercise.is_public && !@exercise.unified_setting))  ##不为课堂成员，且试卷不为公开的,或试卷公开，但不是统一设置的
       normal_status(-1, "试卷暂未公开！")
@@ -1639,7 +1634,7 @@ class ExercisesController < ApplicationController
   #打回重做时的初步判断
   def check_exercise_status
     @exercise_users = @exercise.all_exercise_users(current_user.id).commit_exercise_by_status(1) #当前教师所在分班的全部已提交的学生数
-    if @exercise.get_exercise_status(current_user.id) != 2
+    if @exercise.get_exercise_status(current_user) != 2
       normal_status(-1,"非提交中的试卷不允许打回重做！")
     elsif @exercise_users.count < 1
       normal_status(-1,"暂无人提交试卷！")
@@ -1649,7 +1644,7 @@ class ExercisesController < ApplicationController
 
   #查看试题页面，当为学生时，除非试卷已截止，或已提交才可以查看
   def check_exercise_is_end
-    ex_status = @exercise.get_exercise_status(current_user.id)
+    ex_status = @exercise.get_exercise_status(current_user)
     @ex_user = @exercise.exercise_users.find_by(user_id:@exercise_current_user_id)  #该试卷的回答者
     if @user_course_identity > Course::ASSISTANT_PROFESSOR
       if ex_status == 1
@@ -1666,7 +1661,7 @@ class ExercisesController < ApplicationController
   def check_exercise_public
     if @user_course_identity > Course::ASSISTANT_PROFESSOR   #当前为学生,试卷公开统计，且已截止，且已提交
       ex_user = @exercise.exercise_users.exercise_commit_users(current_user.id).first
-      unless @exercise.get_exercise_status(current_user.id) == 3 && ex_user.present? && ex_user.commit_status == 1 &&
+      unless @exercise.get_exercise_status(current_user) == 3 && ex_user.present? && ex_user.commit_status == 1 &&
           @exercise.show_statistic
         normal_status(-1,"学生暂不能查看")
       end
diff --git a/app/controllers/poll_votes_controller.rb b/app/controllers/poll_votes_controller.rb
index f1da3a1b2..c11248054 100644
--- a/app/controllers/poll_votes_controller.rb
+++ b/app/controllers/poll_votes_controller.rb
@@ -134,7 +134,7 @@ class PollVotesController < ApplicationController
   end
 
   def check_answer_in_question
-    poll_user_status = @poll.get_poll_status(current_user.id)
+    poll_user_status = @poll.get_poll_status(current_user)
     poll_user = @poll.poll_users.find_by(user_id: current_user.id) #当前用户
 
     question_type = @poll_question&.question_type
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index d94299454..fa8d7dd8c 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -31,50 +31,48 @@ class PollsController < ApplicationController
         @current_user_ = current_user
         @course_status = @course.is_end ? 0 : 1   # 课堂是否结束
         @course_is_public = @course.is_public
-        @polls_count = @polls_all.count  # 全部页面，需返回
-        @polls_unpublish_counts = @polls_all.poll_by_status(1).count #未发布的问卷数
-        @polls_published_counts = @polls_all.poll_by_status([2, 3]).count  # 已发布的问卷数
 
         # 课堂的学生人数
         @course_all_members = @course.students #当前课堂的全部学生
-        @course_all_members_count = @course_all_members.count  #当前课堂的学生数
         @current_student = @course_all_members.find_by(user_id: current_user.id)  #当前用户是否为课堂的学生
-
         # polls的不同用户群体的显示
         if @user_course_identity < Course::STUDENT      # @is_teacher_or 1为老师/管理员/助教
           @is_teacher_or = 1
-          @teacher_groups_ids = @course.charge_group_ids(current_user)
           @polls = @polls_all                                        #老师能看到全部的问卷，不管是已发布的/未发布的/已截止的/统一设置的/私有设置的（看到内容不同）
         elsif @user_course_identity == Course::STUDENT  # 2为课堂成员，能看到统一设置的和自己班级的
           @is_teacher_or = 2
-          member_group_id = @current_student.try(:course_group_id).to_i  # 成员的分班id，默认为0
-          if member_group_id == 0   #表示是课堂的未分班成员,只能查看统一设置的试卷（已发布的/已截止的）
+          @member_group_id = @current_student.try(:course_group_id).to_i  # 成员的分班id，默认为0
+          if @member_group_id == 0   #表示是课堂的未分班成员,只能查看统一设置的试卷（已发布的/已截止的）
             @polls = member_show_polls.size > 0 ? member_show_polls.public_or_unset : []
           else   #已分班级的成员，可以查看统一设置和单独设置（试卷是发布在该班级）试卷
             # 已发布 当前用户班级分组的 试卷id
-            poll_settings_ids = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_published.pluck(:poll_id).uniq  # 选择成员的班级id等于课堂问卷设置的班级id
-            @polls = member_show_polls.present? ? member_show_polls.public_or_unset.or(member_show_polls.where(id: poll_settings_ids)) : []
+            not_poll_ids = @course.poll_group_settings.poll_group_not_published.where("course_group_id = #{@member_group_id}").pluck(:poll_id)
+            @polls = member_show_polls.where.not(id: not_poll_ids)
           end
         else  #用户未登陆或不是该课堂成员,仅显示统一设置的（已发布的/已截止的），如有公开，则不显示锁，不公开，则显示锁
           @is_teacher_or = 0
-          @polls = member_show_polls.size > 0 ? member_show_polls.public_or_unset : []
+          @polls = member_show_polls.public_or_unset
         end
+
         if @polls.count > 0
           if params[:type].present?
             choose_type = params[:type]
-            member_group_id = @current_student.try(:course_group_id).to_i  # 成员的分班id，默认为0
-            if @is_teacher_or == 2 && member_group_id > 0
-              poll_groups_sets = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_published
-              poll_settings_ids = poll_groups_sets.pluck(:poll_id)
-              poll_ended_ids = poll_groups_sets.poll_group_ended.pluck(:poll_id).uniq
-              # poll_settings_ids = @course.poll_group_settings.where(course_group_id: member_group_id).poll_group_ended.pluck(:poll_id).uniq
-              if choose_type.to_i == 2
-                @polls = @polls_all.present? ? @polls_all.poll_by_status(2).public_or_unset.or(@polls_all.where(id:(poll_settings_ids - poll_ended_ids).uniq)).distinct : []
-              elsif choose_type.to_i == 3
-                @polls = @polls_all.present? ? @polls_all.poll_by_status(3).public_or_unset.or(@polls_all.where(id: poll_ended_ids)).distinct : []
-              end
+            poll_setting_ids = []
+            if @is_teacher_or != 2
+              @polls = @polls.where("polls_status = #{choose_type}")
             else
-              @polls = @polls.poll_by_status(choose_type)
+              case choose_type
+              when 1
+                poll_setting_ids = @course.poll_group_settings.where("course_group_id = #{@member_group_id}").poll_group_not_published.pluck(:poll_id)
+              when 2
+                poll_setting_ids = @course.poll_group_settings.where("course_group_id = #{@member_group_id}")
+                                     .where("publish_time is not null and publish_time <= ? and end_time > ?",Time.now,Time.now).pluck(:poll_id)
+              when 3
+                poll_setting_ids = @course.poll_group_settings.where("course_group_id = #{@member_group_id}").poll_group_ended.pluck(:poll_id)
+              end
+              unified_setting_ids = @polls.public_or_unset.where("polls_status = #{choose_type}").pluck(:id)
+              ex_ids = (poll_setting_ids + unified_setting_ids).uniq
+              @polls = @polls.where(id: ex_ids)
             end
           end
 
@@ -91,10 +89,15 @@ class PollsController < ApplicationController
 
           @polls = @polls.page(@page).per(@limit)
           @polls = @polls&.includes(:poll_users,:poll_questions,:poll_group_settings)
-
         else
           @polls = []
         end
+
+        @polls_count = @polls_all.size  # 全部页面，需返回
+        @polls_unpublish_counts = @polls_all.poll_by_status(1).size #未发布的问卷数
+        @polls_published_counts = @polls_count -  @polls_unpublish_counts # 已发布的问卷数
+        @course_all_members_count = @course_all_members.size  #当前课堂的学生数
+
       rescue Exception => e
         uid_logger_error(e.message)
         tip_exception(e.message)
@@ -202,7 +205,7 @@ class PollsController < ApplicationController
           @is_teacher_or = 1
           @user_poll_answer = 3  #教师页面
         end
-        poll_status = @poll.get_poll_status(current_user.id)
+        poll_status = @poll.get_poll_status(current_user)
         poll_id_array = [@poll.id]
         @poll_publish_count = get_user_permission_course(poll_id_array,2).count   #是否存在已发布的
         @poll_unpublish_count = get_user_permission_course(poll_id_array,1).count  #是否存在未发布的
@@ -344,7 +347,7 @@ class PollsController < ApplicationController
       begin
         check_ids = Poll.where(id: params[:check_ids])
         check_ids.each do |poll|
-          poll_status = poll.get_poll_status(current_user.id)
+          poll_status = poll.get_poll_status(current_user)
           if poll_status == 2  #跳过已截止的或未发布的
             g_course = params[:group_ids]  #表示是否传入分班参数,如果传入分班的参数，那么poll的统一设置需修改，poll_group_settings
             if g_course
@@ -687,7 +690,7 @@ class PollsController < ApplicationController
 
         course_group_ids = @course.charge_group_ids(current_user)  #当前老师的班级id数组
 
-        poll_status = @poll.get_poll_status(current_user.id)
+        poll_status = @poll.get_poll_status(current_user)
         if poll_status == 1 && course_group_ids.size > 0 # 问卷未发布，且老师的分班大于1 ，才可以修改统一设置，否则按poll默认的来处理
           unified_setting = params[:unified_setting]
         else
@@ -847,7 +850,7 @@ class PollsController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         poll_user_current = @poll.poll_users.find_by_group_ids(@poll_current_user_id).first  #查找当前用户是否有过答题
-        @poll_status = @poll.get_poll_status(current_user.id)
+        @poll_status = @poll.get_poll_status(current_user)
         if poll_user_current.blank?
           if @user_course_identity > Course::ASSISTANT_PROFESSOR #当为老师的时候，不创建poll_user表，理论上老师是不能进入答题的
             poll_user_params = {
@@ -955,7 +958,7 @@ class PollsController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         poll_ids = [@poll.id]
-        @poll_list_status = @poll.get_poll_status(current_user.id)
+        @poll_list_status = @poll.get_poll_status(current_user)
         @poll_publish_count = get_user_permission_course(poll_ids,2).count
         @poll_unpublish_count = get_user_permission_course(poll_ids,1).count
         @course_all_members = @course.students
@@ -1103,7 +1106,7 @@ class PollsController < ApplicationController
 
   ## 判断开始答题页面的用户权限
   def check_user_on_answer
-    poll_status = @poll.get_poll_status(current_user.id)
+    poll_status = @poll.get_poll_status(current_user)
     if @user_course_identity == Course::STUDENT && poll_status == 1   #问卷未发布，且当前用户不为老师/管理员
       normal_status(-1, "未发布问卷！")
     elsif @user_course_identity > Course::STUDENT && (!@poll.is_public ||  (@poll.is_public && !@poll.unified_setting))  ##不为课堂成员，且问卷不为公开的,或问卷公开，但是不是统一设置的
@@ -1160,7 +1163,7 @@ class PollsController < ApplicationController
 
   def check_poll_question_complete  #commit_poll 的权限
     poll_user_current = @poll.poll_users.find_by_group_ids(current_user.id).first
-    poll_status = @poll.get_poll_status(current_user.id)
+    poll_status = @poll.get_poll_status(current_user)
     if @user_course_identity < Course::STUDENT || (poll_status == 3) || (poll_user_current.present? && poll_user_current.commit_status == 1)
       normal_status(-1,"用户没有权限!")  #老师/管理员在提交时没有权限
     else
@@ -1182,7 +1185,7 @@ class PollsController < ApplicationController
   end
 
   def check_poll_commit_result
-    poll_status = @poll.get_poll_status(current_user.id)
+    poll_status = @poll.get_poll_status(current_user)
     commit_poll_user = @poll.poll_users.find_by_group_ids(current_user.id).commit_by_status(1) #当前用户已提交问卷的
     unless (@user_course_identity < Course::STUDENT) || ((@poll.show_result == 1)  && (poll_status == 3) && commit_poll_user.present?)
       normal_status(-1,"没有权限！") #当前为老师/问卷公开统计，且问卷已截止，且用户有过回答的
@@ -1214,18 +1217,12 @@ class PollsController < ApplicationController
   def get_user_permission_course(poll_ids,status)  #获取用户权限范围内的已发布/未发布
     poll_status = status.to_i
     unpublish_group = []
-    # g_course_ids = @course.teacher_course_groups.get_user_groups(current_user.id).pluck(:course_group_id).reject(&:blank?).uniq
-    # if g_course_ids.blank? || g_course_ids.include?(0) #当前用户的分班权限为空，即具体全部的分班权限
-    #   user_groups_id = @course.course_groups.pluck(:id)
-    # else
-    #   user_groups_id = g_course_ids
-    # end
     user_groups_id = @course.charge_group_ids(current_user)
     all_polls = Poll.where(id:poll_ids)
     all_polls.each do |poll|
       if poll.present?
         if poll.unified_setting
-          poll_user_status = poll.get_poll_status(current_user.id)   #当前用户的能看到的试卷
+          poll_user_status = poll.get_poll_status(current_user)   #当前用户的能看到的试卷
           if poll_user_status == poll_status || poll_status == 3 #未发布的情况
             unpublish_group = unpublish_group + user_groups_id
           else
diff --git a/app/controllers/zips_controller.rb b/app/controllers/zips_controller.rb
index 2d21237f5..e8a2874dd 100644
--- a/app/controllers/zips_controller.rb
+++ b/app/controllers/zips_controller.rb
@@ -42,7 +42,7 @@ class ZipsController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         @exercise = Exercise.includes(:exercise_users,:exercise_questions).find_by(id:params[:exercise_id])
-        @exercise_status = @exercise.present? ? @exercise.get_exercise_status(current_user.id) : 1
+        @exercise_status = @exercise.present? ? @exercise.get_exercise_status(current_user) : 1
         group_id = params[:exercise_group_id]
         if @exercise.blank?
           normal_status(-1,"试卷不存在")
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 8174d1eea..ca2f6d47c 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -252,7 +252,7 @@ module ExercisesHelper
   #获取试卷的已答/未答人数
   def get_exercise_answers(ex_users)
     @exercise_answers = ex_users.commit_exercise_by_status(1).size   #表示已经提交了的用户
-    course_all_members_count = ex_users.exists? ? ex_users.size : 0
+    course_all_members_count = ex_users.size
     @exercise_unanswers = (course_all_members_count - @exercise_answers)
   end
 
@@ -266,7 +266,7 @@ module ExercisesHelper
     elsif is_teacher_or == 1 #当前为老师的时候，显示的是老师身份的对应试卷的状态，因为该试卷，可能对应老师的多个分班
       exercise_status = exercise.exercise_status
     else
-      exercise_status = exercise.get_exercise_status(user.id)  #当前用户查看的试卷的发布状态
+      exercise_status = exercise.get_exercise_status(user)  #当前用户查看的试卷的发布状态
     end
 
     case exercise_status
@@ -509,7 +509,7 @@ module ExercisesHelper
     ex_user_user = ex_user.user
     exercise_user_name = ex_user_user.real_name
     exercise_user_id = ex_user_user.id
-    ex_user_exercise_status = exercise.get_exercise_status(exercise_user_id)
+    ex_user_exercise_status = exercise.get_exercise_status(ex_user_user)
     ex_user_student_id = ex_user_user.student_id
     if ex_user.start_at.present? && ex_user.commit_status == 0   #用户已回答，但未提交
       commit_status = 2   #继续答题
diff --git a/app/helpers/polls_helper.rb b/app/helpers/polls_helper.rb
index aee95eef7..54a9fe1f0 100644
--- a/app/helpers/polls_helper.rb
+++ b/app/helpers/polls_helper.rb
@@ -2,9 +2,8 @@ module PollsHelper
 
   #获取试卷的已答/未答人数
   def get_poll_answers(poll_users)
-    @commit_poll_users = poll_users.commit_by_status(1)  #当前老师的全部学生中已提交的
-    @poll_answers = @commit_poll_users.present? ? @commit_poll_users.size : 0   #表示已经提交了的用户
-    course_all_members_count = poll_users.present? ? poll_users.size : 0
+    @poll_answers = poll_users.commit_by_status(1).size   #表示已经提交了的用户
+    course_all_members_count = poll_users.size
     @poll_unanswers = (course_all_members_count - @poll_answers)
   end
 
@@ -55,7 +54,7 @@ module PollsHelper
       #当前为老师(非课堂成员、统一设置)的时候，显示的是老师身份的对应试卷的状态，因为该试卷，可能对应老师的多个分班
       poll_status = poll.polls_status
     else
-      poll_status = poll.get_poll_status(user.id)  #当前用户查看的试卷的发布状态
+      poll_status = poll.get_poll_status(user)  #当前用户查看的试卷的发布状态
     end
 
     if is_teacher_or == 1
diff --git a/app/models/course.rb b/app/models/course.rb
index 7729a2650..f61ff1e2a 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -124,7 +124,7 @@ class Course < ApplicationRecord
 
   #当前老师的班级id
   def teacher_course_ids(user_id)
-    course_teacher_member = teacher_course_groups.get_user_groups(user_id) #获取当前老师的分班
+    course_teacher_member = teacher_course_groups.get_user_groups(user_id).select(:course_group_id) #获取当前老师的分班
     if course_teacher_member.blank?
       if none_group_count > 0  #有未分班的，则发布到未发布分班
         un_group_ids = [0]
diff --git a/app/models/exercise.rb b/app/models/exercise.rb
index bc5424b6e..150988a49 100644
--- a/app/models/exercise.rb
+++ b/app/models/exercise.rb
@@ -57,10 +57,10 @@ class Exercise < ApplicationRecord
 
   #统一设置，为当前老师有权限的分班学生，分班设置，也为当前老师有权限的分班的学生
   def all_exercise_users(user_id)
-    ex_users = self.exercise_users
+    ex_users = exercise_users
     group_ids = common_published_ids(user_id)
     if group_ids.present?
-      ex_users = ex_users.where(user_id: course.students.where(course_group_id: group_ids).pluck(:user_id))
+      ex_users = ex_users.where(user_id: course.students.where(course_group_id: group_ids).select(:user_id).pluck(:user_id))
     end
     ex_users
   end
@@ -72,7 +72,7 @@ class Exercise < ApplicationRecord
       un_group_ids = (course.none_group_count > 0) ? [0] : []
       published_group_ids = (current_user_groups + un_group_ids).uniq    #统一设置时，为当前用户的分班id及未分班
     else
-      ex_group_setting = exercise_group_settings.pluck("course_group_id").uniq
+      ex_group_setting = exercise_group_settings.select(:course_group_id).pluck("course_group_id").uniq
       common_all_ids = ex_group_setting & current_user_groups  #当前用户有权限的已发布的分班id #非统一设置时，为当前用户有权限的且已发布分班的id
       published_group_ids = common_all_ids.uniq
     end
@@ -89,11 +89,9 @@ class Exercise < ApplicationRecord
   end
 
   #判断是否为分班，如果分班，试卷的截止时间为当前分班时间，否则为试卷的截止时间
-  def get_exercise_status(user_id)
-    user_group = course.course_members.find_by(user_id: user_id)
-    if user_group.present? && user_group.role == "STUDENT"   #当为学生的时候,需根据分班来判断试卷状态
+  def get_exercise_status(user)
+    if user.student_of_course?(course)   #当为学生的时候,需根据分班来判断试卷状态
         ex_time = get_exercise_times(user_id,false)
-
         pb_time = ex_time[:publish_time]
         ed_time = ex_time[:end_time]
 
@@ -115,18 +113,17 @@ class Exercise < ApplicationRecord
     if unified_setting || teacher    #当试卷为统一设置或当前为老师的时候
       pb_time = publish_time
       en_time = end_time
-
-      if en_time.present? && (en_time <= Time.now) && (exercise_status != 3)
+      if (exercise_status != 3) && en_time.present? && (en_time <= Time.now)
         update_column("exercise_status",3)
       end
     else
       ex_group_setting = exercise_group_settings
-      user_group = course.students.course_find_by_ids("user_id",user_id)
+      user_group = course.students.where(user_id:user_id).select(:course_group_id)
       if user_group.exists?
-        user_group_id = user_group.first.course_group_id
-        user_ex_group_setting = ex_group_setting.find_in_exercise_group("course_group_id",user_group_id)
-        pb_time = user_ex_group_setting.exists? ? user_ex_group_setting.first.publish_time : nil
-        en_time = user_ex_group_setting.exists? ? user_ex_group_setting.first.end_time : nil
+        user_group_id = user_group.first&.course_group_id
+        user_ex_group_setting = ex_group_setting.where(course_group_id:user_group_id).select(:publish_time,:end_time)
+        pb_time = user_ex_group_setting.first&.publish_time
+        en_time = user_ex_group_setting.first&.end_time
       else
         pb_time = nil
         en_time = nil
@@ -141,13 +138,13 @@ class Exercise < ApplicationRecord
 
   #判断当前用户的答题状态
   def check_user_answer_status(user)
-    ex_answer_user = exercise_users.find_by(user_id: user.id)
-    user_ex_status = get_exercise_status(user.id)
+    ex_answer_user = exercise_users.where(user_id: user.id).select(:start_at,:end_at,:commit_status)
+    user_ex_status = get_exercise_status(user)
     user_status = 2
-    if ex_answer_user.present? && (ex_answer_user.start_at.present? || ex_answer_user.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
+    if ex_answer_user.exists? && (ex_answer_user.first&.start_at.present? || ex_answer_user.first&.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
       user_status = ex_answer_user.commit_status
     end
-    if ex_answer_user.present? && ex_answer_user.start_at.blank? && user_ex_status == 3
+    if ex_answer_user.exists? && ex_answer_user.first&.start_at.blank? && user_ex_status == 3
       user_status = 4
     end
 
diff --git a/app/models/poll.rb b/app/models/poll.rb
index 0434068cd..ed3c143fa 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -45,8 +45,7 @@ class Poll < ApplicationRecord
       poll_users
     else
       ex_group_setting_ids = poll_group_settings.poll_group_published.pluck(:course_group_id)
-      course_user_ids = course.students.where(course_group_id:ex_group_setting_ids).pluck(:user_id)
-      poll_users.where(user_id:course_user_ids)
+      poll_users.where(user_id: course.students.where(course_group_id:ex_group_setting_ids).pluck(:user_id).uniq)
     end
   end
 
@@ -55,7 +54,7 @@ class Poll < ApplicationRecord
     poll_all_users = poll_users
     group_ids = poll_published_ids(user_id)
     if group_ids.present?
-      poll_all_users = poll_all_users.where(user_id: course.students.where(course_group_id: group_ids).pluck(:user_id).uniq)
+      poll_all_users = poll_all_users.where(user_id: course.students.where(course_group_id: group_ids).select(:user_id).pluck(:user_id).uniq)
     end
     poll_all_users
   end
@@ -71,20 +70,14 @@ class Poll < ApplicationRecord
       end
       (current_user_groups + un_group_ids).uniq    #统一设置时，为当前用户的分班id
     else
-      ex_group_setting = poll_group_settings.pluck("course_group_id").uniq
+      ex_group_setting = poll_group_settings.select(:course_group_id).pluck("course_group_id").uniq
       ex_group_setting & current_user_groups  #当前用户有权限的已发布的分班id  #非统一设置时，为当前用户有权限的且已发布分班的id
     end
   end
 
-  def get_poll_status(user_id)
-    user_group = course.course_members.find_by(user_id: user_id, is_active: 1)
-    if user_group.present?
-      if user_group.role == "STUDENT"   #为学生
-        is_teacher = false
-      else
-        is_teacher = true
-      end
-      ex_time = get_poll_times(user_id,is_teacher)
+  def get_poll_status(user)
+    if user.student_of_course?(course)
+      ex_time = get_poll_times(user_id,false)
       pb_time = ex_time[:publish_time]
       ed_time = ex_time[:end_time]
       if pb_time.present? && ed_time.present? && pb_time <= Time.now && ed_time > Time.now
@@ -102,30 +95,20 @@ class Poll < ApplicationRecord
 
   #获取问卷的发布时间和截止时间。teacher 为boolean,当为true时，表示的是当前为老师
   def get_poll_times(user_id,teacher)
-    if unified_setting
+    if unified_setting || teacher
       pb_time = publish_time
       en_time = end_time
     else
       poll_group_setting = poll_group_settings
-      if teacher  #当前为老师,为设置组的最大值和最小值
-        user_group = course.teacher_course_groups.get_user_groups(user_id)
-        user_group_ids = user_group.present? ? user_group.pluck(:course_group_id) : course.course_groups.pluck(:id)
-        user_poll_group_settings = poll_group_setting.find_in_poll_group("course_group_id",user_group_ids)
-        pb_time_min = user_poll_group_settings.publish_time_present.map(&:publish_time)
-        en_time_max = user_poll_group_settings.end_time_present.map(&:end_time)
-        pb_time = pb_time_min.size > 0 ? pb_time_min.min : nil
-        en_time = en_time_max.size > 0 ? en_time_max.max : nil
+      user_group = course.course_members.where(user_id: user_id).select(:course_group_id)
+      if user_group.exists?
+        user_group_id = user_group.first&.course_group_id
+        user_p_group_setting = poll_group_setting.where(course_group_id: user_group_id).select(:publish_time,:end_time)
+        pb_time = user_p_group_setting.first&.publish_time
+        en_time = user_p_group_setting.first&.end_time
       else
-        user_group = course.students.find_by(user_id: user_id)
-        if user_group.present?
-          user_group_id = user_group.course_group_id
-          user_p_group_setting = poll_group_setting.find_by(course_group_id: user_group_id)
-          pb_time = user_p_group_setting.present? ? user_p_group_setting.publish_time : nil
-          en_time = user_p_group_setting.present? ? user_p_group_setting.end_time : nil
-        else
-          pb_time = nil
-          en_time = nil
-        end
+        pb_time = nil
+        en_time = nil
       end
     end
     {
@@ -136,19 +119,11 @@ class Poll < ApplicationRecord
 
   #判断当前用户的答题状态
   def check_user_votes_status(user)
-    poll_answer_user = poll_users.find_by(user_id: user.id)
-    # user_poll_status = get_poll_status(user.id)
+    poll_answer_user = poll_users.where(user_id: user.id).select(:start_at,:end_at,:commit_status)
     user_status = 2
-
-    if poll_answer_user.present? && (poll_answer_user.start_at.present? || poll_answer_user.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
+    if poll_answer_user.exists? && (poll_answer_user.first&.start_at.present? || poll_answer_user.first&.end_at.present?)   #学生有过答题的,或者立即截止，但学生未做试卷的
       user_status = poll_answer_user.commit_status
     end
-    #
-    # if poll_answer_user.present? && poll_answer_user.start_at.blank? && user_poll_status == 3
-    #   # user_status = 4
-    #   user_status = 2    #问卷用户存在，且未开始答题，且问卷已截止时，返回未提交标示
-    # end
-
     user_status
   end
 
diff --git a/app/views/exercises/index.json.jbuilder b/app/views/exercises/index.json.jbuilder
index 4c143da4b..bccce4f2b 100644
--- a/app/views/exercises/index.json.jbuilder
+++ b/app/views/exercises/index.json.jbuilder
@@ -2,13 +2,12 @@
 if @exercises_count > 0
   json.exercises do
     json.array! @exercises do |exercise|
-      ex_index = exercise_index_show(exercise,@course,@is_teacher_or,@current_user_)
       json.extract! exercise, :id, :exercise_name,:is_public,:created_at
       if @is_teacher_or == 2
         second_left = get_exercise_left_time(exercise,@current_user_)
         json.time second_left.present? ? (second_left / 60) : nil
       end
-
+      ex_index = exercise_index_show(exercise,@course,@is_teacher_or,@current_user_)
       json.exercise_status ex_index[:ex_status]
       json.lock_status ex_index[:lock_icon]
       json.publish_time ex_index[:publish_time]  # 试卷的发布时间
diff --git a/app/views/polls/index.json.jbuilder b/app/views/polls/index.json.jbuilder
index b657da7a0..0face0966 100644
--- a/app/views/polls/index.json.jbuilder
+++ b/app/views/polls/index.json.jbuilder
@@ -1,18 +1,4 @@
- json.polls_counts do
-   json.polls_total_counts @polls_count  #全部问卷数
-   json.polls_all_counts @polls_select_count   #选择后的问卷数
-   json.polls_unpublish_counts @polls_unpublish_counts  #未发布问卷数
-   json.polls_published_counts @polls_published_counts  #已发布问卷数
-   # json.polls_ended_counts @polls_ended_counts   #已截止问卷数
-   json.left_banner_id @left_banner_id
-   json.left_banner_name @left_banner_name
-end
 
-json.course_types do
-  json.course_status @course_status   # 课堂的当前是否结束，如结束，则为1，否则为0
-  json.course_is_public @course_is_public  #判断课堂是否为公开，只有公开课才有设为公开的按钮
-  json.user_permission @is_teacher_or # 当前用户存在且为课堂教师/管理员/超级管理员时为1 ，课堂成员为2，否则为0
-end
 
 if @polls_count > 0
   json.polls do
@@ -32,3 +18,17 @@ else
   json.polls []
 end
 
+json.polls_counts do
+  json.polls_total_counts @polls_count  #全部问卷数
+  json.polls_all_counts @polls_select_count   #选择后的问卷数
+  json.polls_unpublish_counts @polls_unpublish_counts  #未发布问卷数
+  json.polls_published_counts @polls_published_counts  #已发布问卷数
+  json.left_banner_id @left_banner_id
+  json.left_banner_name @left_banner_name
+end
+
+json.course_types do
+  json.course_status @course_status   # 课堂的当前是否结束，如结束，则为1，否则为0
+  json.course_is_public @course_is_public  #判断课堂是否为公开，只有公开课才有设为公开的按钮
+  json.user_permission @is_teacher_or # 当前用户存在且为课堂教师/管理员/超级管理员时为1 ，课堂成员为2，否则为0
+end