sanitize snippets

Fixing "undefined method white_list_sanitizer' for String:Class" and "undefined method full_sanitizer' for String:Class"

Tagged rails2.2, fix, ruby, sanitize  Languages ruby

If you get one of these errors, it's highly likely that you've upgraded to Rails 2.2 or higher:

undefined method white_list_sanitizer' for String:Class
undefined method full_sanitizer' for String:Class

The fix is to extend the SanitizeHelper.

class String
  extend ActionView::Helpers::SanitizeHelper::ClassMethods
end