diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index ace4ae903..0382e7be0 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -462,14 +462,14 @@ class UsersController < ApplicationController
         ids = []
         ids << Issue.where(id: act_ids, project_id: p_ids).map{|x| x.id}
 
-        #Bid
-        act_ids = activity.where(act_type: 'Bid').select('act_id').map{|x| x.act_id}
-        course_ids = HomeworkForCourse.where(bid_id: act_ids).select('distinct course_id').map{|x| x.course_id} 
+        #HomeworkCommon
+        act_ids = activity.where(act_type: 'HomeworkCommon').select('act_id').map{|x| x.act_id}
+        course_ids = HomeworkCommon.where(id: act_ids).select('distinct course_id').map{|x| x.course_id}
         c_ids = []
         Course.where(id: course_ids).each do |x|
           c_ids << x.id unless x.is_public !=0 && User.current.member_of_course?(x)
         end
-        ids << HomeworkForCourse.where(bid_id: act_ids, course_id: c_ids).map{|x| x.id}
+        ids << HomeworkCommon.where(id: act_ids, course_id: c_ids).map{|x| x.id}
 
         #Journal
         act_ids = activity.where(act_type: 'Journal').select('act_id').map{|x| x.act_id}
diff --git a/app/models/homework_common.rb b/app/models/homework_common.rb
index 925ebb106..ac10b2516 100644
--- a/app/models/homework_common.rb
+++ b/app/models/homework_common.rb
@@ -14,7 +14,10 @@ class HomeworkCommon < ActiveRecord::Base
   has_many :student_works_evaluation_distributions, :through => :student_works #一个作业的分配的匿评列表
   has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy #用户活动
   acts_as_attachable
-
+  acts_as_event :title => Proc.new {|o| "#{l(:label_course_homework)} ##{o.id}: #{o.name}" },
+                :description => :description,
+                :author => :author,
+                :url => Proc.new {|o| {:controller => 'student_work', :action => 'index', :homework => o.id}}
   after_create :act_as_activity
   after_destroy :delete_kindeditor_assets
 
diff --git a/app/views/users/show.html.erb b/app/views/users/show.html.erb
index 6083b547c..40122fba7 100644
--- a/app/views/users/show.html.erb
+++ b/app/views/users/show.html.erb
@@ -45,7 +45,7 @@
             <% (Rails.logger.error "[Error] =========================================================> NameError: uninitialized constant " + e.act_type.to_s; next;) if e.act_type.safe_constantize.nil? %>
             <% act = e.act %>
             <% unless act.nil? %>
-                <% if e.act_type == 'JournalsForMessage' || e.act_type == 'Bid' || e.act_type == 'Journal'|| e.act_type == 'Changeset' || e.act_type == 'Message' || e.act_type == 'Principal' || e.act_type == 'News' || e.act_type == 'Issue' || e.act_type == 'Contest' %>
+                <% if e.act_type == 'JournalsForMessage' || e.act_type == 'HomeworkCommon' || e.act_type == 'Journal'|| e.act_type == 'Changeset' || e.act_type == 'Message' || e.act_type == 'Principal' || e.act_type == 'News' || e.act_type == 'Issue' || e.act_type == 'Contest' %>
 
                     <table width="660" border="0" align="left" style="border-bottom: 1px dashed rgb(204, 204, 204); margin-bottom: 10px;font-size:14px;">
                     <tr>
@@ -119,52 +119,28 @@
                             <div style="display: inline-block; float: right; margin-top: 0px"></div>
                           </td>
                         </tr>
-                    <% when 'Bid' %>
+                    <% when 'HomeworkCommon' %>
                         <tr>
-                          <% if act.reward_type == 3 && @show_course == 1 %>
-                              <% if e.user == User.current %>
-                                  <td colspan="2" valign="top">
-                                    <strong>
-                                      <%= link_to("#{l(:label_i)}", user_path(e.user_id)) %>
-                                    </strong>
+                          <% if e.user == User.current %>
+                              <td colspan="2" valign="top">
+                                <strong>
+                                  <%= link_to("#{l(:label_i)}", user_path(e.user_id)) %>
+                                </strong>
                                                     <span class="font_lighter">
                                                         <%= l(:label_i_new_activity) %>
                                                     </span>
-                                    <%= link_to format_activity_title("#{l(:label_active_homework)}##{act.id}:#{act.name}"), course_for_bid_path(e.act_id) %>
-                                  </td>
-                              <% else %>
-                                  <td colspan="2" valign="top">
-                                    <strong>
-                                      <%= link_to(h(e.user), user_path(e.user_id)) %>
-                                    </strong>&nbsp;
+                                <%= link_to format_activity_title("#{l(:label_active_homework)}##{act.id}:#{act.name}"), student_work_index_path(:homework => e.act_id) %>
+                              </td>
+                          <% else %>
+                              <td colspan="2" valign="top">
+                                <strong>
+                                  <%= link_to(h(e.user), user_path(e.user_id)) %>
+                                </strong>&nbsp;
                                                     <span class="font_lighter">
                                                         <%= l(:label_new_activity) %>
                                                     </span>&nbsp;
-                                    <%= link_to format_activity_title("#{l(:label_active_homework)}##{act.id}:#{act.name}"), course_for_bid_path(e.act_id) %>
-                                  </td>
-                              <% end %>
-                          <% else %>
-                              <% if e.user == User.current %>
-                                  <td colspan="2" valign="top">
-                                    <strong>
-                                      <%= link_to("#{l(:label_i)}", user_path(e.user_id)) %>
-                                    </strong>
-                                                    <span class="font_lighter">
-                                                      <%= l(:label_i_new_activity) %>
-                                                    </span>
-                                    <%= link_to format_activity_title("#{l(:label_active_call)}##{act.id}:#{act.name}"), respond_path(e.act_id) %>
-                                  </td>
-                              <% else %>
-                                  <td colspan="2" valign="top">
-                                    <strong>
-                                      <%= link_to(h(e.user), user_path(e.user_id)) %>
-                                    </strong>&nbsp;
-                                                    <span class="font_lighter">
-                                                      <%= l(:label_new_activity) %>
-                                                    </span>&nbsp;
-                                    <%= link_to format_activity_title("#{l(:label_active_call)}##{act.id}:#{act.name}"), respond_path(e.act_id) %>
-                                  </td>
-                              <% end %>
+                                <%= link_to format_activity_title("#{l(:label_active_homework)}##{act.id}:#{act.name}"), student_work_index_path(:homework => e.act_id) %>
+                              </td>
                           <% end %>
                         </tr>
                         <tr>
@@ -177,7 +153,7 @@
                           <td>
                             <div style="display: inline-block; float: left; margin-top: 0px" width="200" align="right" class="a">
                                               <span class="font_lighter">
-                                                <%= (l(:label_update_time).to_s << ': ' << format_time(e.act.created_on)).to_s %>
+                                                <%= (l(:label_update_time).to_s << ': ' << format_time(e.act.created_at)).to_s %>
                                               </span>
                             </div>
                             <!--<div style="display: inline-block; float: right; margin-top: 0px">-->