diff --git a/app/assets/javascripts/admins/competitions/index.js b/app/assets/javascripts/admins/competitions/index.js
new file mode 100644
index 000000000..ae4593d33
--- /dev/null
+++ b/app/assets/javascripts/admins/competitions/index.js
@@ -0,0 +1,11 @@
+$(document).on('turbolinks:load', function() {
+    if ($('body.admins-competitions-index-page').length > 0) {
+        $('.modal.admin-upload-file-modal').on('upload:success', function(e, data){
+            var $imageElement = $('.competition-image-' + data.source_id);
+            $imageElement.attr('src', data.url);
+            $imageElement.show();
+            $imageElement.next().html('重新上传');
+        })
+    }
+});
+
diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 60cf2d6c5..168d05299 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -1058,8 +1058,8 @@ class HomeworkCommonsController < ApplicationController
       tip_exception("截止时间不能晚于课堂结束时间（#{@course.end_date.end_of_day.strftime("%Y-%m-%d %H:%M")}）") if
         @course.end_date.present? && params[:end_time] > strf_time(@course.end_date.end_of_day)
     else
+      tip_exception("缺少分班截止时间参数") if params[:group_end_times].blank?
       group_end_times = params[:group_end_times].reject(&:blank?).map{|time| time.to_time}
-      tip_exception("缺少截止时间参数") if group_end_times.blank?
       tip_exception("截止时间和分班参数的个数不一致") if group_end_times.length != group_ids.length
       group_end_times.each do |time|
         tip_exception("分班截止时间不能早于当前时间") if time <= Time.now
diff --git a/app/views/admins/competition_settings/show.html.erb b/app/views/admins/competition_settings/show.html.erb
index e69de29bb..8249f2737 100644
--- a/app/views/admins/competition_settings/show.html.erb
+++ b/app/views/admins/competition_settings/show.html.erb
@@ -0,0 +1,9 @@
+<%
+  define_admin_breadcrumbs do
+    add_admin_breadcrumb('竞赛列表', admins_competitions_path)
+    add_admin_breadcrumb(@competition.name)
+  end
+%>
+
+
+
diff --git a/config/admins/sidebar.yml b/config/admins/sidebar.yml
index 71e77e218..b722f2505 100644
--- a/config/admins/sidebar.yml
+++ b/config/admins/sidebar.yml
@@ -1,3 +1,4 @@
 admins-mirror_scripts: 'admins-mirror_repositories'
 admins-laboratory_settings: 'admins-laboratories'
-admins-carousels: 'admins-laboratories'
\ No newline at end of file
+admins-carousels: 'admins-laboratories'
+admins-competition_settings: 'admins-competitions'
\ No newline at end of file