diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 9e8297820..215dd3a58 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -7,20 +7,16 @@ class CoursesController < ApplicationController
   def join
     if User.current.logged?
       course = Project.find(params[:object_id])
-      if ( !course_endTime_timeout?(course) )
-        course_prefs = Course.find_by_extra(course.identifier)
-        if params[:course_password] == course_prefs.password
+      course_prefs = Course.find_by_extra(course.identifier)
+      if params[:course_password] == course_prefs.password
         members = []
         members << Member.new(:role_ids => [10], :user_id => User.current.id)
         course.members << members
-    
+        
         StudentsForCourse.create(:student_id => User.current.id, :course_id => params[:object_id])
         @state = 0
-        else
-          @state = 1
-        end
       else
-        @state = 2
+        @state = 1
       end
     end
     respond_to do |format|
@@ -49,7 +45,18 @@ class CoursesController < ApplicationController
   private
 
   def allow_join
-    course_endTime_timeout? Project.find(params[:object_id])
+    if course_endTime_timeout? Project.find(params[:object_id])
+      respond_to do |format|
+        format.js{
+          @state = 2
+          render :partial => 'set_join', 
+                 :locals => {:user => User.current, 
+                            :course => Project.find(params[:object_id]), 
+                            :object_id => params[:object_id]
+                            } 
+        }
+      end
+    end
   end
 
 end
\ No newline at end of file
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 16a320e37..9a9518eb3 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -374,7 +374,7 @@ class ProjectsController < ApplicationController
        
     @course_tag = params[:project][:project_type]
     if(@course_tag=="1")
-      if User.current.user_extensions.identity == 0
+      if User.current.user_extensions.identity#.include?(UserExtensions::TEACHER,UserExtensions::DEVELOPER) 
       @course = Course.new
       @course.extra='course' + DateTime.parse(Time.now.to_s).strftime('%Y-%m-%d_%H-%M-%S').to_s
       @course.safe_attributes = params[:project][:course]
@@ -534,7 +534,7 @@ class ProjectsController < ApplicationController
     @subprojects = @project.children.visible.all
     @news = @project.news.limit(5).includes(:author, :project).reorder("#{News.table_name}.created_on DESC").all
     @trackers = @project.rolled_up_trackers
-    if(User.find_by_id(ProjectInfo.find_by_project_id(@project.id).user_id))
+    if(User.find_by_id(ProjectInfo.find_by_project_id(@project.id).try(:user_id)))
 	     @user = User.find_by_id(ProjectInfo.find_by_project_id(@project.id).user_id)
 	  end
     cond = @project.project_condition(Setting.display_subprojects_issues?)
@@ -805,6 +805,8 @@ class ProjectsController < ApplicationController
   end
 # end
 
+  # TODO:#finishcourse and #restartcourse 没有设置权限，也就是说，任何人的调用都会关闭or重启课程。
+  # 最好通过用户与项目的权限解决这种事情。还没写
   def finishcourse
     course_prefs = Course.find_by_extra(@project.identifier)
     # setup_time = Time.parse(course_prefs.setup_time)
diff --git a/app/models/journals_for_message.rb b/app/models/journals_for_message.rb
index 7a870f6bf..426d1b56b 100644
--- a/app/models/journals_for_message.rb
+++ b/app/models/journals_for_message.rb
@@ -15,21 +15,23 @@ class JournalsForMessage < ActiveRecord::Base
                   "m_reply_id"   # 回复某留言的留言id(a留言回复了b留言，这是b留言的id)
   acts_as_tree :foreign_key => 'm_parent_id', :counter_cache => :m_reply_count, :order => "#{JournalsForMessage.table_name}.created_on ASC"
 
-  belongs_to :project, :foreign_type => 'jour_type', :foreign_key => 'jour_id', :polymorphic => true
+  belongs_to :project, 
+             :foreign_key => 'jour_id', 
+             :conditions => "#{self.table_name}.jour_type = 'Project' "
+
   belongs_to :jour, :polymorphic => true
   belongs_to :user
   belongs_to :at_user, :class_name => "User", :foreign_key => 'reply_id'
 
   acts_as_event :title => Proc.new {|o| "#{l(:label_my_message)}"},
-                :datetime => :updated_on,
+                :datetime => Proc.new {|o| o.updated_on },
                 :author => Proc.new {|o| o.user },
                 :description => Proc.new{|o| o.notes },
                 :type => Proc.new {|o| o.jour_type }#,
                 #:url => Proc.new {|o| ''}#{:controller => 'documents', :action => 'show', :id => o.id}}
-  acts_as_activity_provider :author_key => :author_id,
-                            :func => 'memos',
-                            :timestamp => 'updated_on',
-                            :find_options => {}#:include => :project}
+  acts_as_activity_provider :author_key => :user_id,
+                            :timestamp => "#{self.table_name}.updated_on",
+                            :find_options => {:include => :project }
 
   has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
 
diff --git a/app/views/courses/_set_course_time.html.erb b/app/views/courses/_set_course_time.html.erb
index 7d2569031..ab9fa6f28 100644
--- a/app/views/courses/_set_course_time.html.erb
+++ b/app/views/courses/_set_course_time.html.erb
@@ -2,8 +2,8 @@
 	id = "finish_course_tag"
 %>
 
-<% if course_endTime_timeout?(@project) #如果课程已结束%>
-	<%= link_to '重启课程', restartcourse_project_path, :remote => true, :method => :post, :id => id, :confirm => ('确定要重启课程？') %>
+<% if course_endTime_timeout?(project) #如果课程已结束%>
+	<%= link_to '重启课程', restartcourse_project_path(project), :remote => true, :method => :post, :id => id, :confirm => ('确定要重启课程？') %>
 <% else %>
-	<%= link_to '关闭课程', finishcourse_project_path, :remote => true, :method => :post, :id => id, :confirm => ('确定要关闭课程？') %>
+	<%= link_to '关闭课程', finishcourse_project_path(project), :remote => true, :method => :post, :id => id, :confirm => ('确定要关闭课程？') %>
 <% end %>
diff --git a/app/views/layouts/base_courses.html.erb b/app/views/layouts/base_courses.html.erb
index e0661ccfb..956c608b3 100644
--- a/app/views/layouts/base_courses.html.erb
+++ b/app/views/layouts/base_courses.html.erb
@@ -75,7 +75,7 @@
 													<%if User.current.logged? %>
 												<% if @course.teacher.id == User.current.id %>
 													<%= link_to l(:label_course_modify_settings), {:controller => 'projects', :action => 'settings', :id => @project} %>
-													<%= render :partial => 'courses/set_course_time'%>
+													<%= render :partial => 'courses/set_course_time', :locals => {:project => @project}%>
 												<% else %>
 										
 													<%= join_in_course(@project, User.current) %></div>
diff --git a/app/views/projects/finishcourse.js.erb b/app/views/projects/finishcourse.js.erb
index a9bcfdd49..04f6617db 100644
--- a/app/views/projects/finishcourse.js.erb
+++ b/app/views/projects/finishcourse.js.erb
@@ -2,7 +2,7 @@
 	<% if Rails.env.development? %>
 	console.debug('课程修改成功：结束时间改为<%=Course.find_by_extra(@project.identifier).try(:endup_time)%>');
 	<% end %>
-	$('#finish_course_tag').replaceWith("<%= j(render partial: 'courses/set_course_time' )%>")
+	$('#finish_course_tag').replaceWith("<%= j(render partial: 'courses/set_course_time', :locals => {:project => @project} )%>")
 <% else %>
 	alert('设置失败，请在论坛提交问题，等待管理员处理。');
 <% end  %>
diff --git a/app/views/projects/show.html.erb b/app/views/projects/show.html.erb
index 096db3218..a5f155058 100644
--- a/app/views/projects/show.html.erb
+++ b/app/views/projects/show.html.erb
@@ -57,7 +57,7 @@
 			<td colspan="2">
 			<table width="580">
 				<tr>
-					<td > <%= link_to (h @user.lastname+@user.firstname), user_path(@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 @project.name %><strong> !</strong></td>
 				</tr>
 				<tr>
 					<td class="font_lighter" style="float: right"><%= l :label_update_time %>: <%= format_time(@project.created_on) %>
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 34d159cbe..4aac82bf2 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -442,6 +442,7 @@ zh:
   permission_delete_own_messages: 删除自己的帖子
   permission_export_wiki_pages: 导出 wiki 页面
   permission_manage_subtasks: 管理子任务
+  permission_view_journals_for_messages: 查看留言
 
   project_module_issue_tracking: 问题跟踪
   project_module_time_tracking: 时间跟踪
diff --git a/lib/redmine.rb b/lib/redmine.rb
index 9e42f1b37..da4c436ec 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -96,6 +96,7 @@ Redmine::AccessControl.map do |map|
   map.permission :manage_members, {:projects => :settings, :members => [:index, :show, :create, :update, :destroy, :autocomplete]}, :require => :member
   map.permission :manage_versions, {:projects => :settings, :versions => [:new, :create, :edit, :update, :close_completed, :destroy]}, :require => :member
   map.permission :add_subprojects, {:projects => [:new, :create]}, :require => :member
+  map.permission :view_journals_for_messages, {:gantts => [:show, :update]}, :read => true
 
   map.project_module :issue_tracking do |map|
     # Issue categories
@@ -194,6 +195,11 @@ Redmine::AccessControl.map do |map|
   map.project_module :gantt do |map|
     map.permission :view_gantt, {:gantts => [:show, :update]}, :read => true
   end
+
+  # map.project_module :journals do |map|
+  #   map.permission :view_journals_for_messages, {:gantts => [:show, :update]}, :read => true
+  # end
+
 end
 #by young
 Redmine::MenuManager.map :top_menu do |menu|