diff --git a/app/controllers/tags_controller.rb b/app/controllers/tags_controller.rb
index 0a6f15020..1318e40a5 100644
--- a/app/controllers/tags_controller.rb
+++ b/app/controllers/tags_controller.rb
@@ -38,41 +38,24 @@ class TagsController < ApplicationController
     @obj_id = params[:obj_id]
     @obj_flag = params[:object_flag]
     
-    @selected_tags = Array.new
-    @selected_tag_ids = Array.new
-    @selected_tag_objs = Array.new
+    @selected_tags = Array.new   
     @related_tags = nil
-    @related_tag_ids = Array.new
-    @related_tag_objs = Array.new
-    if params[:q]
-      @tag = ActsAsTaggableOn::Tag.find(params[:q])
-      @selected_tags << @tag.name
-      @selected_tag_ids << @tag.id.to_s
-      @selected_tag_objs << @tag
+    
+    if params[:q]  
+      @selected_tags << params[:q]
     else
       @do_what = params[:do_what]
-      @tag = ActsAsTaggableOn::Tag.find(params[:tag])
-      #@selected_tags = params[:current_selected_tags]
-      @selected_tag_ids = params[:current_selected_tags]
-      @selected_tag_ids = @selected_tag_ids.nil? ? Array.new : @selected_tag_ids
-      @selected_tag_ids.each do |t|
-        ta = ActsAsTaggableOn::Tag.find(t)
-        @selected_tags << ta.name
-        @selected_tag_objs << ta
-      end
-      #@selected_tags = @selected_tags.nil? ? Array.new : @selected_tags
+      @tag = params[:tag]
+      @selected_tags = params[:current_selected_tags]
+      @selected_tags = @selected_tags.nil? ? Array.new : @selected_tags
 
       case @do_what
       when '0' then
-        @selected_tags.delete @tag.name    #数组中删除有多方式 可以改用shift,pop
-        @selected_tag_ids.delete @tag.id.to_s
-        @selected_tag_objs.delete @tag
+        @selected_tags.delete @tag    #数组中删除有多方式 可以改用shift,pop
       when '1' then
         # 判断是否已存在该tag 主要用来处理分页的情况
-        unless @selected_tags.include? @tag.name
-          @selected_tags << @tag.name
-          @selected_tag_ids << @tag.id.to_s
-          @selected_tag_objs << @tag
+        unless @selected_tags.include? @tag
+          @selected_tags << @tag
         end
       end
     end
@@ -92,7 +75,7 @@ class TagsController < ApplicationController
         @attachments_results,
     @contests_results,
     @courses_results,
-    @open_source_projects_results= refresh_results(@obj_id,@obj_flag,@selected_tags,@selected_tag_ids)
+    @open_source_projects_results= refresh_results(@obj_id,@obj_flag,@selected_tags)
 
     # 这里是做tag推荐用的， 用来生产推荐的tags
     unless @obj.nil?
@@ -102,13 +85,6 @@ class TagsController < ApplicationController
       #   @tags.delete(i)
       # end    
       @related_tags = @tags
-      @tag_objs = @obj.tags
-      @tag_objs.each  do |t|
-        unless @selected_tags.include?(t.name)
-          @related_tag_ids << t.id.to_s
-          @related_tag_objs << t
-        end
-      end
     else
       return
     end
@@ -186,8 +162,8 @@ class TagsController < ApplicationController
     
     if request.get? 
       # 获取传过来的tag_id taggable_id 和  taggable_type,通过2者确定要删除tag的对象
-      @tag_id = params[:tag_name]
-      @tag_name = (ActsAsTaggableOn::Tag.find(@tag_id)).name
+      @tag_name = params[:tag_name]
+      @tag_id = (ActsAsTaggableOn::Tag.find_by_name(@tag_name)).id 
       @taggable_id = params[:taggable_id]                                   # 当做参数传时对象会变成字符串
       @taggable_type = numbers_to_object_type(params[:taggable_type])
       
@@ -216,7 +192,7 @@ class TagsController < ApplicationController
   private 
   # 这里用来刷新搜索结果的区域
   # 函数的返回值 前2字段用来处理获取其他tag和分页 ，另外4个返回值为过滤结果
-  def refresh_results(obj_id,obj_flag,selected_tags,selected_tag_ids = nil)
+  def refresh_results(obj_id,obj_flag,selected_tags)  
     @users_results = nil
     @projects_results = nil
     @issues_results = nil
@@ -234,36 +210,36 @@ class TagsController < ApplicationController
     case obj_flag
     when '1' then
       @obj = User.find_by_id(obj_id)
-      @obj_pages,@users_results,@results_count = for_pagination(get_users_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@users_results,@results_count = for_pagination(get_users_by_tag(selected_tags))  
     when '2' then   
       @obj = Project.find_by_id(obj_id)
-      @obj_pages,@projects_results,@results_count = for_pagination(get_projects_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@projects_results,@results_count = for_pagination(get_projects_by_tag(selected_tags))
     when '3' then
       @obj = Issue.find_by_id(obj_id)
-      @obj_pages,@issues_results,@results_count = for_pagination(get_issues_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@issues_results,@results_count = for_pagination(get_issues_by_tag(selected_tags))
     when '4' then
-      @obj_pages,@bids_results,@results_count = for_pagination(get_bids_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@bids_results,@results_count = for_pagination(get_bids_by_tag(selected_tags))
       @obj = Bid.find_by_id(obj_id)
     when '5'
       @obj = Forum.find_by_id(obj_id)
-      @obj_pages,@forums_results,@results_count = for_pagination(get_forums_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@forums_results,@results_count = for_pagination(get_forums_by_tag(selected_tags))
     when '6'
       @obj = Attachment.find_by_id(obj_id)
       
       # modifed by Long Jun
       # this is used to find the attachments that came from the same project and tagged with the same tag.
       #@result = get_attachments_by_project_tag(selected_tags, @obj)
-      @result = get_attachments_by_tag(selected_tags,selected_tag_ids)
+      @result = get_attachments_by_tag(selected_tags)
       @obj_pages, @attachments_results, @results_count = for_pagination(@result)
     when '7'
       @obj = Contest.find_by_id(obj_id)
-      @obj_pages,@contests_results,@results_count = for_pagination(get_contests_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages,@contests_results,@results_count = for_pagination(get_contests_by_tag(selected_tags))
     when '8'
       @obj = OpenSourceProject.find_by_id(obj_id)
-      @obj_pages, @open_source_projects_results, @results_count = for_pagination(get_open_source_projects_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages, @open_source_projects_results, @results_count = for_pagination(get_open_source_projects_by_tag(selected_tags))
     when '9' then
       @obj = Course.find_by_id(obj_id)
-      @obj_pages, @courses_results, @results_count = for_pagination(get_courses_by_tag(selected_tags,selected_tag_ids))
+      @obj_pages, @courses_results, @results_count = for_pagination(get_courses_by_tag(selected_tags))
     else
       @obj = nil
     end
diff --git a/app/helpers/attachments_helper.rb b/app/helpers/attachments_helper.rb
index 70a2e40e7..7ea49dad2 100644
--- a/app/helpers/attachments_helper.rb
+++ b/app/helpers/attachments_helper.rb
@@ -75,8 +75,8 @@ module AttachmentsHelper
   
   # this method is used to get all projects that tagged one tag
   # added by william
-  def get_attachments_by_tag(tag_name,selected_tag_ids = nil)
-    Attachment.tagged_with(tag_name,{},selected_tag_ids).order('created_on desc')
+  def get_attachments_by_tag(tag_name)
+    Attachment.tagged_with(tag_name).order('created_on desc')
   end
 
   # this method is used to get all attachments that from one project and tagged one tag
diff --git a/app/helpers/bids_helper.rb b/app/helpers/bids_helper.rb
index 118e0ccb1..a5c25ecb5 100644
--- a/app/helpers/bids_helper.rb
+++ b/app/helpers/bids_helper.rb
@@ -35,8 +35,8 @@ module BidsHelper
   
   # this method is used to get all projects that tagged one tag
   # added by william
-  def get_bids_by_tag(tag_name,selected_tag_ids = nil)
-    Bid.tagged_with(tag_name,{},selected_tag_ids).order('updated_on desc')
+  def get_bids_by_tag(tag_name)
+    Bid.tagged_with(tag_name).order('updated_on desc')
   end
   
   #added by huang
diff --git a/app/helpers/contests_helper.rb b/app/helpers/contests_helper.rb
index 983cf68bd..0bc3e5e73 100644
--- a/app/helpers/contests_helper.rb
+++ b/app/helpers/contests_helper.rb
@@ -35,8 +35,8 @@ module ContestsHelper
   
   # this method is used to get all projects that tagged one tag
   # added by william
-  def get_contests_by_tag(tag_name,selected_tag_ids = nil)
-    Contest.tagged_with(tag_name,{},selected_tag_ids).order('updated_on desc')
+  def get_contests_by_tag(tag_name)
+    Contest.tagged_with(tag_name).order('updated_on desc')
   end
   
   #added by huang
diff --git a/app/helpers/courses_helper.rb b/app/helpers/courses_helper.rb
index 77445532b..1afb94220 100644
--- a/app/helpers/courses_helper.rb
+++ b/app/helpers/courses_helper.rb
@@ -449,8 +449,8 @@ module CoursesHelper
     return homework_users
   end
 
-  def get_courses_by_tag(tag_name,selected_tag_ids = nil)
-    Course.tagged_with(tag_name,{},selected_tag_ids).order('updated_at desc')
+  def get_courses_by_tag(tag_name)
+    Course.tagged_with(tag_name).order('updated_at desc')
   end
 
   #课程实践年份下拉框
diff --git a/app/helpers/forums_helper.rb b/app/helpers/forums_helper.rb
index 2d7b4bbb8..47a059e04 100644
--- a/app/helpers/forums_helper.rb
+++ b/app/helpers/forums_helper.rb
@@ -22,7 +22,7 @@ module ForumsHelper
 
 	# this method is used to get all projects that tagged one tag
 	# added by william
-	def get_forums_by_tag(tag_name,selected_tag_ids = nil)
-		Forum.tagged_with(tag_name,{},selected_tag_ids).order('updated_at desc')
+	def get_forums_by_tag(tag_name)
+		Forum.tagged_with(tag_name).order('updated_at desc')
 	end
 end
diff --git a/app/helpers/issues_helper.rb b/app/helpers/issues_helper.rb
index b5f49331f..637c92db3 100644
--- a/app/helpers/issues_helper.rb
+++ b/app/helpers/issues_helper.rb
@@ -382,8 +382,8 @@ module IssuesHelper
 
     # this method is used to get all projects that tagged one tag
   # added by william
-  def get_issues_by_tag(tag_name,selected_tag_ids = nil)
-    Issue.tagged_with(tag_name,{},selected_tag_ids).order('updated_on desc')
+  def get_issues_by_tag(tag_name)
+    Issue.tagged_with(tag_name).order('updated_on desc')
   end
 
 end
diff --git a/app/helpers/open_source_projects_helper.rb b/app/helpers/open_source_projects_helper.rb
index 8f7d31e05..dfc7cc8d0 100644
--- a/app/helpers/open_source_projects_helper.rb
+++ b/app/helpers/open_source_projects_helper.rb
@@ -31,8 +31,8 @@ module OpenSourceProjectsHelper
     s = content_tag('div', s, :class => 'user_tags')
   end
 
-  def get_open_source_projects_by_tag(tag_name,selected_tag_ids = nil)
-    OpenSourceProject.tagged_with(tag_name,{},selected_tag_ids).order('created_at desc')
+  def get_open_source_projects_by_tag(tag_name)
+    OpenSourceProject.tagged_with(tag_name).order('created_at desc')
   end
   
   def show_origin(url)
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 3beed444d..5df3644ad 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -232,8 +232,8 @@ module ProjectsHelper
 
   # this method is used to get all projects that tagged one tag
   # added by william
-  def get_projects_by_tag(tag_name,selected_tag_ids = nil)
-    Project.tagged_with(tag_name,{},selected_tag_ids).order('updated_on desc')
+  def get_projects_by_tag(tag_name)
+    Project.tagged_with(tag_name).order('updated_on desc')
   end
   
   # added by fq
diff --git a/app/helpers/users_helper.rb b/app/helpers/users_helper.rb
index ac3d5ad57..58935dd11 100644
--- a/app/helpers/users_helper.rb
+++ b/app/helpers/users_helper.rb
@@ -57,8 +57,8 @@ module UsersHelper
 
   # this method is used to get all projects that tagged one tag
   # added by william
-  def get_users_by_tag(tag_name,selected_tag_ids = nil)
-    User.tagged_with(tag_name,{},selected_tag_ids).order('updated_on desc')
+  def get_users_by_tag(tag_name)
+    User.tagged_with(tag_name).order('updated_on desc')
   end
   
   # added by fq
diff --git a/app/views/tags/_related_tags.html.erb b/app/views/tags/_related_tags.html.erb
index 17e006da5..04b356598 100644
--- a/app/views/tags/_related_tags.html.erb
+++ b/app/views/tags/_related_tags.html.erb
@@ -5,14 +5,14 @@
     <% i += 1 %>
 	<li>	
 		<%= link_to image_tag("/images/sidebar/add.png"),:action => "index",
-		                      :current_selected_tags => selected_tags,:tag => rt.id,:do_what => "1",
+		                      :current_selected_tags => selected_tags,:tag => rt,:do_what => "1",
 		                              :obj_id => obj_id,:object_flag => obj_flag %>
 		<span id="tag">
-		<%= rt.name %>
+		<%= rt %> 
 		</span>
 		<% break if i >= 10 %>
 		<!-- 这里用例计数某类对象的所有该tag总数 -->
-	 <%= render :partial => 'sidebar_tags',:locals => {:show_flag => obj_flag,:sg => rt,:selected_tag_ids => related_tag_ids }%>
+	 <%= render :partial => 'sidebar_tags',:locals => {:show_flag => obj_flag,:sg => rt }%>
 	</li>
 	<% end %>
 </ul>
diff --git a/app/views/tags/_selected_tags.html.erb b/app/views/tags/_selected_tags.html.erb
index 851770469..3081177bc 100644
--- a/app/views/tags/_selected_tags.html.erb
+++ b/app/views/tags/_selected_tags.html.erb
@@ -3,10 +3,10 @@
 	<% for sg in selected_tags %>
 	<li>
 		<%= link_to image_tag("/images/sidebar/minus.png"),:action => "index",
-		:current_selected_tags => selected_tags ,:tag => sg.id,:do_what => "0",
+		:current_selected_tags => selected_tags ,:tag => sg,:do_what => "0",
 		                        :obj_id => obj_id,:object_flag => obj_flag %>
-		<span id="tag"><%= sg.name %> </span>
-	     <%= render :partial => 'sidebar_tags',:locals => {:show_flag => obj_flag,:sg => sg ,:selected_tag_ids => @selected_tag_ids}%>
+		<span id="tag"><%= sg %> </span>
+	     <%= render :partial => 'sidebar_tags',:locals => {:show_flag => obj_flag,:sg => sg }%>
 	</li>
 	<% end %>
 </ul>
diff --git a/app/views/tags/_sidebar_tags.html.erb b/app/views/tags/_sidebar_tags.html.erb
index cb1b416fc..8db485d1f 100644
--- a/app/views/tags/_sidebar_tags.html.erb
+++ b/app/views/tags/_sidebar_tags.html.erb
@@ -1,14 +1,14 @@
 <% case show_flag%>
 <% when '1' then %>
-(<%= User.tagged_with("#{sg.name}",{},selected_tag_ids).size %>)
+(<%= User.tagged_with("#{sg}").size %>)
 <%when '2' then %>
-(<%= Project.tagged_with(sg.name,{},selected_tag_ids).size %>)
+(<%= Project.tagged_with(sg).size %>)
 <% when '3' then %>
-(<%= Issue.tagged_with("#{sg.name}",{},selected_tag_ids).size %>)
+(<%= Issue.tagged_with("#{sg}").size %>)
 <% when '4' then %>
-(<%= Bid.tagged_with("#{sg.name}",{},selected_tag_ids).size %>)
+(<%= Bid.tagged_with("#{sg}").size %>)
 <% when '5' then %>
-(<%= Forum.tagged_with("#{sg.name}",{},selected_tag_ids).size %>)
+(<%= Forum.tagged_with("#{sg}").size %>)
 <% when '6' then %>
-(<%= Attachment.tagged_with("#{sg.name}",{},selected_tag_ids).size %>)
+(<%= Attachment.tagged_with("#{sg}").size %>)
 <% end %>
diff --git a/app/views/tags/_tag_name.html.erb b/app/views/tags/_tag_name.html.erb
index 698a3a868..6996e8891 100644
--- a/app/views/tags/_tag_name.html.erb
+++ b/app/views/tags/_tag_name.html.erb
@@ -8,7 +8,7 @@
     // })
 </script>
 <!-- 1代表是user类型   2代表是project类型  3代表是issue类型   4代表需求 9代表课程-->
-<% @tags = obj.reload.tags %>
+<% @tags = obj.reload.tag_list %>
 
 <% if non_list_all and (@tags.size > 0) %>
     <!-- 这里是显示的非主页的tag 所以当tag数量较多时 不必全部显示 用“更多”代替  -->
diff --git a/app/views/tags/index.html.erb b/app/views/tags/index.html.erb
index 18bb2faf9..47a2ba1d2 100644
--- a/app/views/tags/index.html.erb
+++ b/app/views/tags/index.html.erb
@@ -3,13 +3,13 @@
 	<h3><strong><%= l(:label_tags_selected) %></strong></h3>
 	<div id="selected_tags">
 		<%= render :partial => "selected_tags",:locals => {
-			        :selected_tags => @selected_tag_objs,:obj_flag => @obj_flag,:obj_id => @obj_id }%>
+			        :selected_tags => @selected_tags,:obj_flag => @obj_flag,:obj_id => @obj_id }%>
 	</div>
 
 	<h3><strong><%= l(:label_tags_related) %></strong></h3>
 	<div id="related_tags">
-		<%= render :partial => "related_tags",:locals => {:related_tags => @related_tag_objs,
-			                          :selected_tags => @selected_tag_ids,:related_tag_ids => @related_tag_ids,:obj_flag => @obj_flag,:obj_id => @obj_id }%>
+		<%= render :partial => "related_tags",:locals => {:related_tags => @related_tags,
+			                          :selected_tags => @selected_tags,:obj_flag => @obj_flag,:obj_id => @obj_id }%>
 	</div>
 </div>
 <% end %>
diff --git a/lib/plugins/acts-as-taggable-on/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb b/lib/plugins/acts-as-taggable-on/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
index a6c1e0974..594ee1238 100644
--- a/lib/plugins/acts-as-taggable-on/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
+++ b/lib/plugins/acts-as-taggable-on/lib/acts_as_taggable_on/acts_as_taggable_on/core.rb
@@ -81,7 +81,7 @@ module ActsAsTaggableOn::Taggable
       #   User.tagged_with("awesome", "cool", :any => true)       # Users that are tagged with awesome or cool
       #   User.tagged_with("awesome", "cool", :match_all => true) # Users that are tagged with just awesome and cool
       #   User.tagged_with("awesome", "cool", :owned_by => foo ) # Users that are tagged with just awesome and cool by 'foo'
-      def tagged_with(tags,options = {},selected_tag_ids = nil)
+      def tagged_with(tags, options = {})
         tag_list = ActsAsTaggableOn::TagList.from(tags)
         empty_result = where("1 = 0")
 
@@ -154,9 +154,9 @@ module ActsAsTaggableOn::Taggable
         else
           tags = ActsAsTaggableOn::Tag.named_any(tag_list)
 
-          #return empty_result unless tags.length == tag_list.length
+          return empty_result unless tags.length == tag_list.length
+
           tags.each do |tag|
-            next if selected_tag_ids && selected_tag_ids.count != 0 && !selected_tag_ids.include?(tag.id.to_s)
             taggings_alias = adjust_taggings_alias("#{alias_base_name[0..11]}_taggings_#{sha_prefix(tag.name)}")
             tagging_join  = "JOIN #{ActsAsTaggableOn::Tagging.table_name} #{taggings_alias}" +
                 "  ON #{taggings_alias}.taggable_id = #{quote}#{table_name}#{quote}.#{primary_key}" +
@@ -355,7 +355,7 @@ module ActsAsTaggableOn::Taggable
               new_tags |= current_tags[index...current_tags.size] & shared_tags
 
               # Order the array of tag objects to match the tag list
-              new_tags = tags.map do |t| 
+              new_tags = tags.map do |t|
                 new_tags.find { |n| n.name.downcase == t.name.downcase }
               end.compact
             end