diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index c442e5a6c..cb3b5c929 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -87,7 +87,7 @@ class CoursesController < ApplicationController
         (course_members.role in(1,2,3) and CONCAT(users.lastname, users.firstname) like :keyword) or courses.name like :keyword
         or schools.name like :keyword
       }
-      @courses = @courses.joins(course_members: [user: [user_extension: :school]]).where("#{sql}", keyword: "%#{params[:search]}%")
+      @courses = @courses.joins(course_members: [user: [user_extension: :school]]).where("#{sql}", keyword: "%#{params[:search]}%").distinct
     end
     @courses_count = @courses.size
 
@@ -937,7 +937,7 @@ class CoursesController < ApplicationController
     @page  = params[:page]  || 1
     @page_size = params[:page_size] || 15
 
-    @courses = Course.by_user(current_user).hidden(false).ended(false).deleted(0).by_keywords(params[:search]).distinct
+    @courses = Course.by_user(current_user).hidden(false).processing.not_deleted.by_keywords(params[:search]).distinct
 
     # @total_count = @courses.count
     # offset = 0
@@ -994,6 +994,20 @@ class CoursesController < ApplicationController
     end
   end
 
+  def search_slim
+    courses = current_user.manage_courses.not_deleted.processing
+
+    keyword = params[:keyword].to_s.strip
+    if keyword.present?
+      courses = courses.where('name LIKE ?', "%#{keyword}%")
+    end
+
+    count = courses.count
+    courses = paginate(courses)
+
+    render_ok(count: count, courses: courses.select(:id, :name).as_json)
+  end
+
   private
 
   # Use callbacks to share common setup or constraints between actions.
diff --git a/app/controllers/question_banks_controller.rb b/app/controllers/question_banks_controller.rb
index 299224527..bf55db9dd 100644
--- a/app/controllers/question_banks_controller.rb
+++ b/app/controllers/question_banks_controller.rb
@@ -240,7 +240,7 @@ class QuestionBanksController < ApplicationController
     ActiveRecord::Base.transaction do
       new_task = GraduationTask.new
       new_task.attributes = task.attributes.dup.except("id", "course_id", "user_id", "quotes", "graduation_task_id",
-                                                       "course_list_id", "gtask_bank_id")
+                                                       "course_list_id", "gtask_bank_id", "created_at", "updated_at")
       new_task.course_id = course.id
       new_task.gtask_bank_id = task.id
       new_task.user_id = current_user.id
@@ -266,7 +266,7 @@ class QuestionBanksController < ApplicationController
     ActiveRecord::Base.transaction do
       new_topic = GraduationTopic.new
       new_topic.attributes = topic.attributes.dup.except("id", "course_id", "user_id", "graduation_topic_id",
-                                                         "course_list_id", "gtopic_bank_id")
+                                                         "course_list_id", "gtopic_bank_id", "created_at", "updated_at")
       new_topic.course_id = course.id
       new_topic.gtopic_bank_id = topic.id
       new_topic.user_id = current_user.id
diff --git a/app/helpers/graduation_tasks_helper.rb b/app/helpers/graduation_tasks_helper.rb
index 5253b0d56..a5f05d623 100644
--- a/app/helpers/graduation_tasks_helper.rb
+++ b/app/helpers/graduation_tasks_helper.rb
@@ -14,7 +14,7 @@ module GraduationTasksHelper
 
   # 交叉评阅
   def cross_comment task, user_id
-    if task.cross_comment
+    if task.cross_comment && task.status >= 3
       [{id: 1, name: "只看我的交叉评阅", count: task.graduation_work_comment_assignations.myself(user_id).count}]
     else
       []
diff --git a/app/models/course.rb b/app/models/course.rb
index c0c7f1f23..e4ade6e9f 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -61,6 +61,8 @@ class Course < ApplicationRecord
 
   scope :hidden,      ->(is_hidden = true) { where(is_hidden: is_hidden) }
   scope :ended,       ->(is_end = true) { where(is_end: is_end) }
+  scope :processing,  -> { where(is_end: false) }
+  scope :not_deleted, -> { where(is_delete: 0) }
   scope :deleted,     ->(is_delete = 1) { where(is_delete: is_delete) }
   scope :by_user,     ->(user) { joins(:course_members).where('course_members.user_id = ?', user.id).order(updated_at: :desc) }
   scope :by_keywords, lambda { |keywords|
diff --git a/app/models/message.rb b/app/models/message.rb
index 26946f6d0..d3d507a72 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -56,11 +56,10 @@ class Message < ApplicationRecord
     from_board = Board.find(messages.first.board_id)
 
     root_ids = messages.map(&:id)
-    children = Message.where(parent_id: root_ids).select(:id).to_a
-    children_ids = children.map(&:id)
-    second_children = Message.where(parent_id: children_ids).select(:id).to_a
+    children_ids = Message.where(parent_id: root_ids).pluck(:id)
+    second_children_ids = Message.where(parent_id: children_ids).pluck(:id)
 
-    ids = root_ids.concat(children_ids).concat(second_children.map(&:id)).uniq
+    ids = root_ids.concat(children_ids).concat(second_children_ids).uniq
 
     ActiveRecord::Base.transaction do
       Message.where(id: ids, board_id: from_board.id).update_all(board_id: to_board.id)
diff --git a/app/services/users/course_service.rb b/app/services/users/course_service.rb
index 6271db17b..9eb34917e 100644
--- a/app/services/users/course_service.rb
+++ b/app/services/users/course_service.rb
@@ -11,7 +11,7 @@ class Users::CourseService
   end
 
   def call
-    courses = category_scope_courses.deleted(false)
+    courses = category_scope_courses.not_deleted
 
     courses = status_filter(courses)
 
@@ -38,9 +38,9 @@ class Users::CourseService
 
     case params[:status]
     when 'processing' then
-      relations.ended(false)
+      relations.processing
     when 'end' then
-      relations.ended(true)
+      relations.ended
     else
       relations
     end
diff --git a/app/views/courses/index.json.jbuilder b/app/views/courses/index.json.jbuilder
index 94da87af5..1993851e8 100644
--- a/app/views/courses/index.json.jbuilder
+++ b/app/views/courses/index.json.jbuilder
@@ -10,7 +10,7 @@ json.courses do
     json.tasks_count get_tasks_count course
     json.visits course.visits
     json.is_public course.is_public
-    json.is_accessible course.is_public? || @user.course_identity(course) < Course::NORMAL
+    json.is_accessible course.is_public == 1 || @user.course_identity(course) < Course::NORMAL
     json.is_end course.is_end
     json.first_category_url module_url(course.course_modules.first, course)
   end
diff --git a/config/routes.rb b/config/routes.rb
index e7fac7331..ecd54c8c0 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -303,6 +303,7 @@ Rails.application.routes.draw do
         post 'search_course_list'
         get 'board_list'
         get 'mine'
+        get 'search_slim'
       end
 
       resources :polls, only:[:index,:new,:create] do
diff --git a/lib/tasks/course_board_message_count.rake b/lib/tasks/course_board_message_count.rake
new file mode 100644
index 000000000..35e439403
--- /dev/null
+++ b/lib/tasks/course_board_message_count.rake
@@ -0,0 +1,26 @@
+namespace :course_board do
+  desc 'transfer children message to root message board'
+  task children_message_transfer: :environment do
+    Board.find_each do |board|
+      logger("Current transfer board id: #{board.id} ~")
+
+      root_subquery = board.messages.where(parent_id: nil).reorder(nil).pluck(:id)
+      if root_subquery.present?
+        children_subquery = Message.where(parent_id: root_subquery).reorder(nil).pluck(:id)
+        if children_subquery.present?
+          second_children_subquery = Message.where(parent_id: children_subquery).reorder(nil).pluck(:id)
+
+          ids = children_subquery.concat(second_children_subquery).uniq
+          Message.where(id: ids).update_all(board_id: board.id)
+        end
+      end
+
+      Board.reset_counters(board.id, :messages)
+      logger("transfer success ~")
+    end
+  end
+
+  def logger(msg)
+    puts msg
+  end
+end
\ No newline at end of file