转义增加&的转义

app/helpers/application_helper.rb

@@ -2345,6 +2345,6 @@ module ApplicationHelper
 
   #将文本内的/n转换为<br>
   def text_format text
-    text.gsub("<","&lt;").gsub(">","&gt;").gsub("\n","<br/>").html_safe
+    text.gsub("&","&amp;").gsub("<","&lt;").gsub(">","&gt;").gsub("\n","<br/>").html_safe
   end
 end