diff --git a/app/controllers/concerns/controller_rescue_handler.rb b/app/controllers/concerns/controller_rescue_handler.rb
index b8b0d4616..dde6c4a8d 100644
--- a/app/controllers/concerns/controller_rescue_handler.rb
+++ b/app/controllers/concerns/controller_rescue_handler.rb
@@ -6,12 +6,17 @@ module ControllerRescueHandler
       Util.logger_error e
       render json: {status: -1, message: "接口异常"}
     end
+    rescue_from Mysql2::Error do |e|
+      Util.logger_error e
+      render json: {status: -1, message: "接口数据异常"}
+    end
     # rescue_from ActionView::MissingTemplate, with: :object_not_found
     # rescue_from ActiveRecord::RecordNotFound, with: :object_not_found
     rescue_from Educoder::TipException, with: :tip_show
     rescue_from ::ActionView::MissingTemplate, with: :missing_template
     rescue_from ActiveRecord::RecordNotFound, with: :object_not_found
     rescue_from ActionController::ParameterMissing, with: :render_parameter_missing
+
     # form validation error
     rescue_from ActiveModel::ValidationError do |ex|
       render_error(ex.model.errors.full_messages.join(','))
@@ -19,5 +24,8 @@ module ControllerRescueHandler
     rescue_from ActiveRecord::RecordInvalid do |ex|
       render_error(ex.record.errors.full_messages.join(','))
     end
+    rescue_from StandardError do |ex|
+      render_error(ex.message)
+    end
   end
 end
\ No newline at end of file
diff --git a/app/controllers/live_links_controller.rb b/app/controllers/live_links_controller.rb
index 085a8178b..f4b49d4aa 100644
--- a/app/controllers/live_links_controller.rb
+++ b/app/controllers/live_links_controller.rb
@@ -1,37 +1,52 @@
 class LiveLinksController < ApplicationController
   before_action :require_login
   before_action :find_course, only: [:index, :create]
-  before_action :user_course_identity
-  before_action :teacher_allowed, only: [:create]
+  before_action :user_course_identity, :teacher_allowed, only: [:create]
+  before_action :edit_auth, only: [:edit, :update, :destroy]
 
   def index
-    lives = @course.live_links.order("id desc")
+    lives = @course.live_links
+    order_str = "on_status desc,id desc"
     @total_count = lives.size
+    @my_live_id = @course.live_links.find_by(user_id: current_user.id)&.id
+    order_str = "live_links.id = #{@my_live_id} desc, #{order_str}" if @my_live_id.present?
+    lives = lives.order("#{order_str}")
     @lives = paginate lives.includes(user: :user_extension)
   end
 
   def create
-    @course.live_links.create!( create_params.merge(user_id: current_user.id))
+    tip_exception("一个老师只能设置一个直播间") if @course.live_links.where(user_id: current_user.id).exists?
+    @course.live_links.create!(create_params.merge(user_id: current_user.id))
     render_ok
   end
 
+  def edit
+    @live = current_live
+  end
+
   def update
-    tip_exception(403, "无权限操作") unless current_user.id == current_live.user_id || current_user.admin?
-    tip_exception("请勿重复开启") if current_live.on_status && params[:on_status].to_i == 1
+    if params[:on_status]
+      tip_exception("请勿重复开启") if current_live.on_status && params[:on_status].to_i == 1
 
-    ActiveRecord::Base.transaction do
-      current_live.update!(on_status: params[:on_status])
+      ActiveRecord::Base.transaction do
+        current_live.update!(on_status: params[:on_status])
 
-      # 开启时发送消息，关闭直播时删除对应的消息
-      if params[:on_status].to_i == 1
-        LivePublishJob.perform_later(current_live.id)
-      else
-        current_live.tidings.destroy_all
+        # 开启时发送消息，关闭直播时删除对应的消息
+        if params[:on_status].to_i == 1
+          LivePublishJob.perform_later(current_live.id)
+        end
       end
+    else
+      current_live.update!(create_params)
     end
     render_ok
   end
 
+  def destroy
+    current_live.destroy!
+    render_ok
+  end
+
   private
 
   def create_params
@@ -41,4 +56,8 @@ class LiveLinksController < ApplicationController
   def current_live
     @_current_live = LiveLink.find params[:id]
   end
+
+  def edit_auth
+    tip_exception(403, "无权限操作") unless current_user.id == current_live.user_id || current_user.admin?
+  end
 end
\ No newline at end of file
diff --git a/app/controllers/tidings_controller.rb b/app/controllers/tidings_controller.rb
index 5acffcb16..9305046b0 100644
--- a/app/controllers/tidings_controller.rb
+++ b/app/controllers/tidings_controller.rb
@@ -19,8 +19,9 @@ class TidingsController < ApplicationController
       end
     tidings = tidings.where(tiding_type: tiding_types) if tiding_types.present?
 
-    tidings = tidings.where(container_type: 'JoinCourse') if params[:type] == 'course_apply'
-    @course_apply_count = tidings.where("created_at > '#{@onclick_time}'").where(container_type: 'JoinCourse').count
+    tidings = tidings.where(container_type: 'JoinCourse', status: 0) if params[:type] == 'course_apply'
+    # @course_apply_count = tidings.where("created_at > '#{@onclick_time}'").where(container_type: 'JoinCourse', status: 0).count
+    @course_apply_count = tidings.where("created_at > '#{@onclick_time}'").where(container_type: 'JoinCourse', status: 0).count
 
     tidings = tidings.where(container_type: 'ProjectPackage') if params[:type] == 'project_package'
 
diff --git a/app/controllers/users/authentication_applies_controller.rb b/app/controllers/users/authentication_applies_controller.rb
index bf5aa0d40..9c3c6d859 100644
--- a/app/controllers/users/authentication_applies_controller.rb
+++ b/app/controllers/users/authentication_applies_controller.rb
@@ -6,7 +6,7 @@ class Users::AuthenticationAppliesController < Users::BaseAccountController
     Users::ApplyAuthenticationService.call(observed_user, create_params)
     render_ok
   rescue ApplicationService::Error => ex
-    render_error(ex.message)
+    tip_exception(ex.message)
   end
 
   def destroy
diff --git a/app/models/student_work.rb b/app/models/student_work.rb
index f8f3bee99..a4ae63f04 100644
--- a/app/models/student_work.rb
+++ b/app/models/student_work.rb
@@ -111,6 +111,7 @@ class StudentWork < ApplicationRecord
 
   # 作品总体评价
   def overall_appraisal
+    return "--" if work_status == 0
     case (self.work_score.to_f / homework_common.total_score).round(2)
     when (0.90..1.00)
       '优秀'
diff --git a/app/services/admins/import_course_member_service.rb b/app/services/admins/import_course_member_service.rb
index 9b9393e78..3ea559766 100644
--- a/app/services/admins/import_course_member_service.rb
+++ b/app/services/admins/import_course_member_service.rb
@@ -36,10 +36,10 @@ class Admins::ImportCourseMemberService < ApplicationService
 
     member = course.course_members.find_by(user_id: user.id, role: data.role.to_i)
     # 如果已是课堂成员且是学生身份and不在指定的分班则移动到该分班
-    if member.present? && member.role == 'STUDENT' && course_group && member.course_group_id != course_group&.id
-      member.update!(course_group_id: course_group&.id)
+    if member.present? && member.role == 'STUDENT' && course_group && member.course_group_id != course_group&.id.to_i
+      member.update!(course_group_id: course_group&.id.to_i)
     elsif member.blank?
-      course.course_members.create!(user_id: user.id, role: data.role.to_i, course_group_id: course_group&.id)
+      course.course_members.create!(user_id: user.id, role: data.role.to_i, course_group_id: course_group&.id.to_i)
       extra =
         case data.role.to_i
         when 2 then 9
diff --git a/app/views/live_links/edit.json.jbuilder b/app/views/live_links/edit.json.jbuilder
new file mode 100644
index 000000000..047a226e8
--- /dev/null
+++ b/app/views/live_links/edit.json.jbuilder
@@ -0,0 +1 @@
+json.(@live, :id, :description, :url)
diff --git a/app/views/live_links/index.json.jbuilder b/app/views/live_links/index.json.jbuilder
index 7e0347618..e951f24bc 100644
--- a/app/views/live_links/index.json.jbuilder
+++ b/app/views/live_links/index.json.jbuilder
@@ -1,8 +1,11 @@
 json.lives @lives do |live|
-  json.(live, :id, :url, :description, :on_status)
+  json.(live, :id, :description, :on_status)
+  json.url live.on_status ? live.url : ""
   json.author_name live.user.show_real_name
   json.author_login live.user.login
   json.author_img url_to_avatar(live.user)
   json.op_auth live.op_auth?
+  json.created_at live.created_at.strftime('%Y-%m-%d')
 end
+json.my_live_id @my_live_id
 json.total_count @total_count
\ No newline at end of file
diff --git a/app/views/student_works/shixun_work_report.json.jbuilder b/app/views/student_works/shixun_work_report.json.jbuilder
index 068151856..bd618c2d4 100644
--- a/app/views/student_works/shixun_work_report.json.jbuilder
+++ b/app/views/student_works/shixun_work_report.json.jbuilder
@@ -4,6 +4,7 @@ json.course_name @course.name
 json.work_id @work.id
 json.work_efficiency @homework.work_efficiency
 json.has_commit @work.myshixun.present?
+json.work_status @work.work_status
 if @shixun
   json.shixun_name @shixun.name
 # 总体评价
diff --git a/config/locales/zh-CN.yml b/config/locales/zh-CN.yml
index 9d4d326cd..6900f6c51 100644
--- a/config/locales/zh-CN.yml
+++ b/config/locales/zh-CN.yml
@@ -170,7 +170,7 @@ zh-CN:
         name: '名称'
       tag_discipline:
         name: '名称'
-      live:
+      live_link:
         description: '说明'
         url: '链接'
 
diff --git a/config/routes.rb b/config/routes.rb
index 7dcd3baff..63a6e4494 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -550,7 +550,7 @@ Rails.application.routes.draw do
         end
       end
 
-      resources :live_links, only: [:index, :update, :create], shallow: true
+      resources :live_links, only: [:index, :update, :create, :edit, :destroy], shallow: true
 
       resources :homework_commons, shallow: true do
 
diff --git a/db/migrate/20200210071320_migrate_defalut_to_tiding.rb b/db/migrate/20200210071320_migrate_defalut_to_tiding.rb
new file mode 100644
index 000000000..1c0cfc8e9
--- /dev/null
+++ b/db/migrate/20200210071320_migrate_defalut_to_tiding.rb
@@ -0,0 +1,7 @@
+class MigrateDefalutToTiding < ActiveRecord::Migration[5.2]
+  def change
+    change_column_default :tidings, :status, from: nil, to: 0
+
+    Tiding.where(status: nil).update_all(status: 0)
+  end
+end
diff --git a/db/migrate/20200210074241_migrate_tiding_status.rb b/db/migrate/20200210074241_migrate_tiding_status.rb
new file mode 100644
index 000000000..57e5f994d
--- /dev/null
+++ b/db/migrate/20200210074241_migrate_tiding_status.rb
@@ -0,0 +1,9 @@
+class MigrateTidingStatus < ActiveRecord::Migration[5.2]
+  def change
+    Tiding.where(container_type: "JoinCourse", status: 0).each do |tiding|
+      unless CourseMessage.where(course_message_id: tiding.trigger_user_id, course_id: tiding.container_id, course_message_type: "JoinCourseRequest", status: 0).exists?
+        tiding.update!(status: 1)
+      end
+    end
+  end
+end
diff --git a/public/images/educoder/xcx/wxshare.png b/public/images/educoder/xcx/wxshare.png
index 173196e6a..658b78ba0 100644
Binary files a/public/images/educoder/xcx/wxshare.png and b/public/images/educoder/xcx/wxshare.png differ