组织下的课程帖子链接参数正确传输

app/views/organizations/_org_course_message.html.erb

@@ -12,7 +12,7 @@
             <%= link_to activity.try(:author).try(:realname), user_url_in_org(activity.author_id), :class => "newsBlue mr15" %>
         <% end %>
         TO
-        <%= link_to activity.course.name.to_s+" | 课程问答区", course_boards_url_in_org(activity.course), :class => "newsBlue ml15 mr5"%>
+        <%= link_to activity.course.name.to_s+" | 课程问答区", course_boards_url_in_org(activity.course.id), :class => "newsBlue ml15 mr5"%>
       </div>
       <div class="homepagePostTitle hidden m_w530 fl">
         <% if activity.parent_id.nil? %> <!--+"(帖子标题)"-->