1、搜索课程报500

2、课程讨论区描述换行显示

app/controllers/courses_controller.rb

@@ -1,5 +1,5 @@
 class CoursesController < ApplicationController
-  layout 'base_courses'
+  # layout 'base_courses'
   include CoursesHelper
   include ActivitiesHelper
   helper :activities
@@ -73,6 +73,7 @@ class CoursesController < ApplicationController
     if @course.errors.full_messages.count <= 0
         respond_to do |format|
           format.html {
+            # render :layout => 'base_courses'
             flash[:notice] = l(:notice_successful_update)
             redirect_to settings_course_url(@course)
           }
@@ -82,7 +83,7 @@ class CoursesController < ApplicationController
       respond_to do |format|
         format.html {
           settings
-          render :action => 'settings'
+          redirect_to settings_course_url(@course)
         }
         format.api  { render_validation_errors(@course) }
       end
@@ -407,6 +408,10 @@ class CoursesController < ApplicationController
 
       @roles = Role.givable.all[3..5]
       @members = @course.member_principals.includes(:roles, :principal).all.sort
+      respond_to do |format|
+        format.html { render :layout => 'base_courses' }
+        format.api { render_validation_errors(@course) }
+      end
     else
       render_403
     end
@@ -424,6 +429,7 @@ class CoursesController < ApplicationController
     else
       respond_to do |format|
               format.html {
+                render :layout => 'base_courses'
                 flash[:notice] = l(:notice_successful_create)
                 if params[:continue]
                   redirect_to new_course_url(attrs, :course => '0')

app/helpers/courses_helper.rb

@@ -20,7 +20,7 @@ module CoursesHelper
 
   # 返回教师数量，即roles表中定义的Manager
   def teacherCount project
-    project.members.count - studentCount(project).to_i
+    project ? project.members.count - studentCount(project).to_i : 0
     # or
     # searchTeacherAndAssistant(project).count
   end
@@ -152,7 +152,7 @@ module CoursesHelper
   # 学生人数计算
   # add by nwb
   def studentCount course
-    course.student.count.to_s#course.student.count
+    course ? course.student.count.to_s : 0#course.student.count
   end
 
   #课程成员数计算
@@ -782,6 +782,7 @@ module CoursesHelper
   end
 
   def visable_attachemnts_incourse course
+    return[] unless course
     result = []
     course.attachments.each do |attachment|
       if attachment.is_public? || User.current.member_of_course?(course) || User.current.admin?

app/views/messages/_form_course.html.erb

@@ -44,7 +44,7 @@
   <%= f.kindeditor :content, :editor_id => 'message_content_editor',
                    :owner_id => @message.nil? ? 0: @message.id,
                    :owner_type => OwnerTypeHelper::MESSAGE,
-                   :width => '91%',
+                   :width => '90%',
                    :height => 300,
                    :class => 'talk_text fl',
                    :input_html => { :id => 'message_content',