diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index a4774517..4036d637 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -7,7 +7,7 @@ class CoursesController < ApplicationController
 
   before_filter :find_course, :except => [ :index, :search,:list, :new, :create, :copy, :statistics, :new_join, :course, :enterprise_course, :course_enterprise,:view_homework_attaches]
   before_filter :authorize, :only => [:show, :settings, :edit, :update, :modules, :close, :reopen, :view_homework_attaches, :course]
-  #before_filter :authorize_global, :only => [:view_homework_attaches, :new,:create]
+  before_filter :authorize_global, :only => [:view_homework_attaches, :new,:create]
   before_filter :require_admin, :only => [:copy, :archive, :unarchive, :destroy, :calendar]
   before_filter :toggleCourse, only: [:finishcourse, :restartcourse]
 
@@ -99,13 +99,13 @@ class CoursesController < ApplicationController
         unless User.current.admin?
           r = Role.givable.find_by_id(Setting.new_project_user_role_id.to_i) || Role.givable.first
           m = Member.new(:user => User.current, :roles => [r])
-          #course = ProjectInfo.new(:user_id => User.current.id, :course_id => @course.id)
+          course = CourseInfos.new(:user_id => User.current.id, :course_id => @course.id)
           #user_grades = UserGrade.create(:user_id => User.current.id, :course_id => @course.id)
           if params[:course][:is_public] == '1'
             course_status = CourseStatus.create(:course_id => @course.id, :watchers_count => 0, :changesets_count => 0, :grade => 0, :course_type => @course_tag)
           end
           @course.members << m
-          #@course.course_infos << course
+          @course.course_infos << course
         end
         respond_to do |format|
           format.html {
@@ -381,12 +381,28 @@ class CoursesController < ApplicationController
     #  documents
     @sort_by = %w(category date title author).include?(params[:sort_by]) ? params[:sort_by] : 'category'
     #
+    @teachers= searchTeacherAndAssistant(@course)
+    @canShowRealName = isCourseTeacher(User.current.id)
+
+    if(User.find_by_id(CourseInfos.find_by_course_id(@course.id).try(:user_id)))
+      @user = User.find_by_id(CourseInfos.find_by_course_id(@course.id).user_id)
+    end
+
     respond_to do |format|
       format.html{render :layout => 'base_courses'}
       format.api
     end
   end
 
+  #判断指定用户是否为课程教师
+  def isCourseTeacher(id)
+    result = false
+    if  @teachers && @teachers.find_by_user_id(id) != nil
+      result = true
+    end
+    result
+  end
+
   def feedback
     page = params[:page]
     # Find the page of the requested reply
diff --git a/app/models/course.rb b/app/models/course.rb
index e47fb52c..6200c194 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -21,10 +21,10 @@ class Course < ActiveRecord::Base
   has_many :journals_for_messages, :as => :jour, :dependent => :destroy
   has_many :homework_for_courses, :dependent => :destroy
   has_many :student, :through => :students_for_courses, :source => :user
-  has_many :course_infos, :dependent => :destroy
+  has_many :course_infos, :class_name => 'CourseInfos',:dependent => :destroy
 
   acts_as_taggable
-  acts_as_nested_set :order => 'name', :dependent => :destroy
+  #acts_as_nested_set :order => 'name', :dependent => :destroy
   acts_as_attachable :view_permission => :view_files,
                      :delete_permission => :manage_files
 
diff --git a/app/views/courses/show.html.erb b/app/views/courses/show.html.erb
index 64eba20e..8a6f5149 100644
--- a/app/views/courses/show.html.erb
+++ b/app/views/courses/show.html.erb
@@ -16,7 +16,7 @@
                         <table width="580px" border="0">
                           <tr>
                             <td colspan="2" valign="top">
-                              <strong> <%= h(e.project) if @project.nil? || @project.id != e.project.id %></strong>
+                              <strong> <%= h(e.course) if @course.nil? || @course.id != e.course.id %></strong>
 										<span class="font_lighter">
                                           <% if @canShowRealName %>
                                                <%= link_to_user(e.event_author) if e.respond_to?(:event_author) %>(<%= link_to_user(e.event_author,@canShowRealName) if e.respond_to?(:event_author) %>)
@@ -26,7 +26,7 @@
 
                                           <%= l(:label_new_activity) %> </span>
 
-                              <%= link_to "#{eventToLanguageCourse(e.event_type, @project)}: "<< format_activity_title(e.event_title), (e.event_type.eql?("attachment")&&e.container.kind_of?(Project)) ? project_files_path(e.container) : e.event_url %>
+                              <%= link_to "#{eventToLanguageCourse(e.event_type, @course)}: "<< format_activity_title(e.event_title), (e.event_type.eql?("attachment")&&e.container.kind_of?(course)) ? course_files_path(e.container) : e.event_url %>
                             </td>
                           </tr>
                           <tr>
@@ -59,10 +59,10 @@
                     <td colspan="2">
                       <table width="580">
                         <tr>
-                          <td > <%= link_to (h @user.try(:name)), user_path(@user) if @user %> <%= l(:label_user_create_project) %> <%= link_to @project.name %><strong> !</strong></td>
+                          <td > <%= link_to (h @user.try(:name)), user_path(@user) if @user %> <%= l(:label_user_create_project) %> <%= link_to @course.name %><strong> !</strong></td>
                         </tr>
                         <tr>
-                          <td class="font_lighter" style="float: right"><%= l :label_update_time %>: <%= format_time(@project.created_on) %>
+                          <td class="font_lighter" style="float: right"><%= l :label_update_time %>: <%= format_time(@course.created_on) %>
                       </table></td>
                   </tr>
                 </table>
diff --git a/lib/redmine/activity/fetcher.rb b/lib/redmine/activity/fetcher.rb
index 9259f1cb..37576613 100644
--- a/lib/redmine/activity/fetcher.rb
+++ b/lib/redmine/activity/fetcher.rb
@@ -47,7 +47,7 @@ module Redmine
         if @project
           @event_types = @event_types.select {|o| @project.self_and_descendants.detect {|p| @user.allowed_to?("view_#{o}".to_sym, p)}}
         else
-          @event_types = @event_types.select {|o| @course.self_and_descendants.detect {|p| @user.allowed_to?("view_#{o}".to_sym, p)}} if @course
+          @event_types = @event_types.select {|o|  @user.allowed_to?("view_#{o}".to_sym,@course)} if @course
         end
         @event_types
       end