课程推荐的课程列表中，为0的不显示

app/views/courses/_recommendation.html.erb

@@ -8,8 +8,13 @@
             <div class="fl">
               <p class="f12 mb5"><%=link_to e_course.name, course_path(e_course.id), :class => "hidden fl w170" %></p>
               <p class="f12">
+                <% if e_course.attachments.count > 0 %>
                     <span class="fl mr15 fontGrey4"><%= l(:project_module_attachments) %>(<%= link_to e_course.attachments.count, course_files_path(e_course), :class => "linkBlue2" %>)</span>
-                <span class="fl fontGrey4"><%= l(:label_homework_commont) %>(<%= link_to e_course.homework_commons.count, homework_common_index_path(:course=>e_course.id), :class => "linkBlue2" %>)</span></p>
+                <% end %>
+                <% if e_course.homework_commons.count > 0 %>
+                    <span class="fl fontGrey4"><%= l(:label_homework_commont) %>(<%= link_to e_course.homework_commons.count, homework_common_index_path(:course=>e_course.id), :class => "linkBlue2" %>)</span>
+                <% end %>
+              </p>
             </div>
             <div class="cl"></div>
           </li>