非班级成员邀请码显示为*****

app/views/layouts/_course_base_info.html.erb

@@ -28,7 +28,15 @@
   <%= image_tag(url_to_avatar(@course), :width => "110", :height => "110", :alt => "班级logo") %>
 </div>
 <div class="sy_class_id fl">
-  <p>邀请码<br /><span class="sy_corange"><%=@course.generate_invite_code %></span></p>
+  <p>邀请码<br />
+    <span class="sy_corange">
+      <% if User.current.admin? || User.current.member_of_course?(@course) %>
+        <%=@course.generate_invite_code %>
+      <% else %>
+        *****
+      <% end %>
+    </span>
+  </p>
 </div>
 <div class="sy_class_info fl ml15">
   <div  class="sy_class_titbox">