不就是個blog

加到application.rb:

module ActiveSupport #:nodoc:
 module CoreExtensions #:nodoc:
 module Hash #:nodoc:
 module Conversions
 unless method_defined? :old_to_xml
 alias_method :old_to_xml, :to_xml
 def to_xml(options = {})
 options.merge!(:dasherize => false)
 old_to_xml(options)
 end
 end
 end
 end
 module Array #:nodoc:
 module Conversions
 unless method_defined? :old_to_xml
 alias_method :old_to_xml, :to_xml
 def to_xml(options = {})
 options.merge!(:dasherize => false)
 old_to_xml(options)
 end
 end
 end
 end
 end
end
module ActiveRecord #:nodoc:
 module XmlSerialization
 unless method_defined? :old_to_xml
 alias_method :old_to_xml, :to_xml
 def to_xml(options = {})
 options.merge!(:dasherize => false)
 old_to_xml(options)
 end
 end
 end
end