修改空数据时，课程首页无法加载(居然是死循环。。。)

app/views/welcome/course.html.erb

@@ -122,6 +122,7 @@
               else
                   course_term = "春季学期"
               end%>
+              <%break if Time.new.strftime("%Y").to_i - year_now >= 2%>
               <% all_new_hot_course += find_all_new_hot_course(course_count-all_new_hot_course.count, @school_id, year_now, course_term)%>
           <% end%>
           <%= render :partial => 'course_list', :locals => {:course_list => all_new_hot_course} %>
@@ -152,6 +153,7 @@
                    else
                       course_term = "春季学期"
                   end%>
+                  <%break if Time.new.strftime("%Y").to_i - year_now >= 2%>
                   <% all_new_hot_course += find_all_new_hot_course(9-(all_new_hot_course.count + cur_school_course.count), @school_id, year_now, course_term)%>
               <% end%>
               <%= render :partial => 'course_list', :locals => {:course_list => all_new_hot_course} %>