班级推荐key修改

app/views/layouts/base_courses.html.erb

@@ -138,7 +138,7 @@
       <% cache [:course_heroes,@course.id.to_s] do%>
         <%= render :partial => 'courses/course_heroes', :locals => {:course => @course} %>
       <% end %>
-      <% cache [:course_recommendation] do%>
+      <% cache [:course_recommendation,@course.id.to_s] do%>
           <div class="sy_class_leftbox" >
             <h3 class="fontGrey7">班级推荐</h3>
             <%= render :partial => 'courses/recommendation', :locals => {:course => @course} %>