调整

app/controllers/homework_commons_controller.rb

@@ -195,7 +195,6 @@ class HomeworkCommonsController < ApplicationController
       end
 
       if params[:format] == "xlsx"
-        @work_excel = @work_excel.includes(:student_works_scores, user: :user_extension, myshixun: :games)
         complete_works = @work_excel.present? ? @work_excel.where("work_status > 0").size : 0
         if @user_course_identity >= Course::STUDENT
           tip_exception(403, "无权限操作")

app/controllers/zips_controller.rb

@@ -109,11 +109,11 @@ class ZipsController < ApplicationController
       work_status = params[:work_status]
       group_id = params[:course_group]
 
-      if work_status.present?
+      unless work_status.blank?
         @all_student_works = @all_student_works.where(work_status:work_status)
       end
 
-      if group_id.present?
+      unless group_id.blank?
         group_user_ids = @course.students.where(course_group_id: params[:course_group]).pluck(:user_id)
         @all_student_works = @all_student_works.where(user_id: group_user_ids)
       end