app/models/feed_item.rb

   1 class FeedItem < ActiveRecord::Base
   2
   3   # require 'cgi' # needed for url decoding
   4
   5   validates_presence_of :feed_name, :title, :description
   6   validate :feed_name_must_be_legal
   7
   8   def FeedItem.valid_feed_name?(feed_name)
   9     Rack::Utils::escape(feed_name) == feed_name and
  10       Rack::Utils::unescape(feed_name) == feed_name and
  11       feed_name != 'index' and
  12       feed_name != 'show' and
  13       feed_name != 'update' and
  14       feed_name != 'action'
  15   end
  16
  17   private
  18
  19   def feed_name_must_be_legal
  20     unless FeedItem.valid_feed_name?(feed_name)
  21       errors.add(:feed_name, 'is an invalid feed name')
  22     end
  23   end
  24
  25 end