解决通知太长不能发的问题

app/models/news.rb

@@ -41,7 +41,7 @@ class News < ActiveRecord::Base
   validates_presence_of :title, :description
   validates_length_of :title, :maximum => 60
   validates_length_of :summary, :maximum => 255
-  validates_length_of :description, :maximum => 10000
+  # validates_length_of :description, :maximum => 10000
 
   acts_as_attachable :delete_permission => :manage_news
   acts_as_searchable :columns => ['title', 'summary', "#{table_name}.description"], :include => :project