增加方法判断：将/n转还成<br/>

app/helpers/application_helper.rb

@@ -2343,4 +2343,8 @@ module ApplicationHelper
     end
   end
 
+  #将文本内的/n转换为<br>
+  def text_format text
+    text.gsub("\n","<br/>").html_safe
+  end
 end

app/views/student_work/_programing_work_show.html.erb

@@ -19,7 +19,7 @@
         编程代码：
       </span>
       <div class="show_hwork_p break_word">
-        <%= textilizable @work.description%>
+        <%= text_format @work.description%>
       </div>
       <div class="cl"></div>
     </li>

app/views/student_work/_show.html.erb

@@ -36,7 +36,7 @@
   <li >
     <span class="tit_fb ">内容：</span>
     <div class="show_hwork_p break_word">
-      <%= textilizable @work.description%>
+      <%= text_format @work.description%>
     </div>
     <div class="cl"></div>
   </li>