课程列表提示框里有html标签问题

app/views/welcome/course.html.erb

@@ -102,7 +102,7 @@
 
           <h1></h1>
           <% find_all_new_hot_course(9, @school_id).map do |course| %>
-              <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s %>>
+              <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s.gsub(/<\/?.*?>/,"") %>>
                 <div class='avatar'>
                   <%= image_tag(get_course_avatar(course), :class => "avatar-4") %>
                 </div>
@@ -148,7 +148,7 @@
         <ul class="d-p-projectlist">
           <% school_course.map do |course| %>
               <% if course.school%>
-              <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s %>>
+              <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s.gsub(/<\/?.*?>/,"") %>>
                 <div class='avatar'>
                   <%= image_tag(get_course_avatar(course), :class => "avatar-4") %>
                 </div>
@@ -188,7 +188,7 @@
                 </p>
               </li>
               <% find_all_new_hot_course(9 - school_course.count, @school_id).map do |course| %>
-                  <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s %>>
+                  <li class='<%= cycle("odd", "even") %>' title=<%= course.description.to_s.gsub(/<\/?.*?>/,"") %>>
                     <div class='avatar'>
                       <%= image_tag(get_course_avatar(course), :class => "avatar-4") %>
                     </div>