diff --git a/app/controllers/organizations_controller.rb b/app/controllers/organizations_controller.rb
index f7adb13dc..43abdaa75 100644
--- a/app/controllers/organizations_controller.rb
+++ b/app/controllers/organizations_controller.rb
@@ -132,28 +132,51 @@ class OrganizationsController < ApplicationController
 
   def get_project_message_activities_org org
     project_ids = org.projects.map{|project| project.id}.join(",")
-    project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{project_ids}) and container_type = 'project' and org_act_type = 'Message' order by updated_at desc limit 2;")
+    unless project_ids.blank?
+      project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{project_ids}) and container_type = 'project' and org_act_type = 'Message' order by updated_at desc limit 2;")
+    else
+      project_acts = nil
+    end
   end
 
   def get_project_issue_activities_org org
     project_ids = org.projects.map{|project| project.id}.join(",")
-    project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{project_ids}) and container_type = 'project' and org_act_type = 'issue' order by updated_at desc limit 4;")
+    unless project_ids.blank?
+      project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{project_ids}) and container_type = 'project' and org_act_type = 'issue' order by updated_at desc limit 4;")
+    else
+      project_acts = nil
+    end
+    #project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{project_ids}) and container_type = 'project' and org_act_type = 'issue' order by updated_at desc limit 4;")
   end
 
   def get_course_homework_activities_org org
     course_ids = org.courses.map{|course| course.id}.join(",")
+    unless course_ids.blank?
+      project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'HomeworkCommon' order by updated_at desc limit 1;")
+    else
+      project_acts = nil
+    end
     #project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' order by updated_at desc limit 5;")
-    project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'HomeworkCommon' order by updated_at desc limit 1;")
+    #project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'HomeworkCommon' order by updated_at desc limit 1;")
   end
 
   def get_course_message_activities_org org
     course_ids = org.courses.map{|course| course.id}.join(",")
-    project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'Message' order by updated_at desc limit 1;")
+    unless course_ids.blank?
+      project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'Message' order by updated_at desc limit 1;")
+    else
+      project_acts = nil
+    end
   end
 
   def get_course_news_activities_org org
     course_ids = org.courses.map{|course| course.id}.join(",")
-    project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'News' order by updated_at desc limit 1;")
+    unless course_ids.blank?
+      project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'News' order by updated_at desc limit 1;")
+    else
+      project_acts = nil
+    end
+    #project_acts = OrgActivity.find_by_sql("SELECT * FROM org_activities where container_id in (#{course_ids}) and container_type = 'course' and org_act_type = 'News' order by updated_at desc limit 1;")
   end
 
   def update
diff --git a/app/views/layouts/base_org_newstyle.html.erb b/app/views/layouts/base_org_newstyle.html.erb
index 33c548b45..e344e64dd 100644
--- a/app/views/layouts/base_org_newstyle.html.erb
+++ b/app/views/layouts/base_org_newstyle.html.erb
@@ -112,21 +112,27 @@
                   <div class="box-top" id="course_<%= field.id %>"><h2 class="box-title">课程动态</h2><p class="box-title-p">course activities</p></div>
                   <div class="course-list">
                     <ul class="clearfix">
+                      <% unless @course_acts_homework.nil? %>
                       <li >
                         <% @course_acts_homework.each do |act| %>
                             <%= render :partial => 'org_new_course_homework', :locals => {:activity => HomeworkCommon.find(act.org_act_id),:user_activity_id =>act.id, :course_activity => 0} %>
                         <% end %>
                       </li>
+                      <% end %>
+                          <% unless @course_acts_message.nil? %>
                       <li >
                         <% @course_acts_message.each do |act| %>
                             <%= render :partial => 'org_new_course_message', :locals => {:activity => Message.find(act.org_act_id), :user_activity_id =>act.id} %>
                         <% end %>
                       </li>
+                      <% end %>
+                              <% unless @course_acts_news.nil? %>
                       <li >
                         <% @course_acts_news.each do |act| %>
                             <%= render :partial => 'org_new_course_news', :locals => {:activity => News.find(act.org_act_id), :user_activity_id =>act.id} %>
                         <% end %>
                       </li>
+                      <% end %>
                       <div class="cl"></div>
                     </ul>
                   </div>
@@ -139,10 +145,8 @@
                 <div class="content">
                   <div class="box-top" id="project_<%= field.id %>"><h2 class="box-title">项目动态</h2><p class="box-title-p">project activities</p></div>
                   <div class="row">
+                    <% unless @project_message_acts.nil? %>
                     <div class="row-l fl">
-
-                      <!-- img -->
-
                       <!-- text -->
                       <% @project_message_acts.each do |act| %>
                           <%= render :partial => 'organizations/org_new_project_message', :locals => {:activity => Message.find(act.org_act_id)} %>
@@ -150,7 +154,9 @@
                       <%= link_to "More", organization_path(@organization, :type => 1), :class => "more-btn mt30 fr", :target => "_blank" %>
                       <div class="cl"></div>
                     </div>
+                    <% end %>
                     <!-- row-l end -->
+                    <% unless @project_issue_acts.nil? %>
                     <div class="row-r fr">
                       <% @project_issue_acts.each do |act| %>
                           <%= render :partial => 'organizations/org_new_project_issues', :locals => {:activity => Issue.find(act.org_act_id)} %>
@@ -158,6 +164,7 @@
                       <%= link_to "More", organization_path(@organization, :type => 1), :class => "more-btn mt30 fr", :target => "_blank" %>
                       <div class="cl"></div>
                     </div>
+                    <% end %>
                     <!-- article-rwrap end -->
                   </div>
                   <div class="cl"></div>