班级设置修改后点击保存需要给出提示框

app/controllers/courses_controller.rb

@@ -177,18 +177,18 @@ class CoursesController < ApplicationController
     @course = c[:course]
     if @course.errors.full_messages.count <= 0
       respond_to do |format|
-        format.html {
+        format.js {
           # render :layout => 'base_courses'
           #flash[:notice] = l(:notice_successful_update)
-          redirect_to settings_course_url(@course)
+          #redirect_to settings_course_url(@course)
         }
         format.api  { render_api_ok }
       end
     else
       respond_to do |format|
-        format.html {
-          settings
-          redirect_to settings_course_url(@course)
+        format.js {
+          # settings
+          # redirect_to settings_course_url(@course)
         }
         format.api  { render_validation_errors(@course) }
       end

app/views/courses/settings.html.erb

@@ -25,7 +25,7 @@
     <div class="container">
       <!----------------基本信息模块----------------------->
       <div class="basic">
-        <%= labelled_form_for @course do |f| %>
+        <%= labelled_form_for @course, :html => {:remote => true} do |f| %>
            <!-- <div class="top clearfix">
               <div class="pic fl">
                 <a href="javascript:void(0);"><%= image_tag(url_to_avatar(@course),width:"139", height: "76", :id=>'nh_source_tx', :alt => '头像') %></a>

app/views/courses/update.js.erb

@@ -0,0 +1 @@
+notice_box_redirect("<%= settings_course_url(@course) %>", '<%= @course.errors.full_messages.count <= 0 ? "更新成功" : "保存失败，请重新编辑" %>');