课程大纲报500

app/views/layouts/_course_base_info.html.erb

@@ -3,8 +3,10 @@
 <% student_num = studentCount(@course) %>
 <% course_file_num = visable_attachemnts_incourse(@course).count %>
 <p class="sy_cgrey mb10">
+  <% if @course.syllabus %>
       <%=link_to @course.syllabus.title, syllabus_path(@course.syllabus_id), :class => 'sy_cgrey' %>
       &nbsp;&gt;&nbsp;
+  <% end %>
   <%=link_to @course.name, course_path(@course), :class => 'sy_cgrey' %>
 </p>