Rails - Jun 2008 - wrong number of arguments (1 for 0) when using respond_to?

Trying to get an otherwise working app (in Rails 2.0.2) up to speed
with Rails 2.1.0 and Ruby 1.8.7, I have some broken code I can''t seem
to fix:

module Pathmaker
  def self.append_features( base )
    base.before_save do |model|
      model.path = model.name.downcase.
        gsub( /\ and\ /,        ''-'' ).
        gsub( /\ on\ /,         ''-'' ).
        gsub( /[^a-zA-Z0-9\-]/, ''-'' ).
        gsub( /[\-]+/,          ''-'' ).
        gsub( /[\-]$/,          ''''  ).
        gsub( /^[\-]/,          ''''  ) if model.respond_to?(
:path )
    end
  end
end

class ActiveRecord::Base
  include Pathmaker
end

  wrong number of arguments (1 for 0)
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:102:in
`sum''
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:102:in
`instance_method_already_implemented?''
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:72:in
`define_attribute_methods''
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:71:in
`each''
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:71:in
`define_attribute_methods''
   
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.1.0/lib/active_record/attribute_methods.rb:342:in
`respond_to?''
    /usr/local/apache2/rails/myapp/app/models/pathmaker.rb:11:in
`append_features''


The online docs for respond_to? shows one required parameter, just
like I''m doing:

http://api.rubyonrails.org/classes/ActiveRecord/Base.html#M001338


So then I thought to check if Rails 2.1.0 has a different version of
respond_to?.  I tried to check my local rdocs, to be sure I was
actually looking at version 2.1.0, but it seems Rails 2.1.0 didn''t
building rdocs when I installed it, nor will it when I reinstall it:

> sudo gem install rails -v=2.1.0
Bulk updating Gem source index for: http://gems.rubyforge.org/
Successfully installed rails-2.1.0
1 gem installed


Any clue, on either problem?


Thanks,

-- 
Greg Donald
http://destiney.com/

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On Tue, Jun 24, 2008 at 11:53 AM, Greg Donald
<gdonald-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Trying to get an otherwise working app (in Rails 2.0.2) up to speed
> with Rails 2.1.0 and Ruby 1.8.7, I have some broken code I can''t
seem
> to fix:
Ruby 1.8.7 is not backward compatible with Ruby 1.8.6. Rails 2.1 is
updated to work with the 1.8.7 changes; Rails 2.0.2 is not.

Please use 1.8.6 :)

jeremy

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On Tue, Jun 24, 2008 at 1:53 PM, Greg Donald
<gdonald-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> but it seems Rails 2.1.0 didn''t
> building rdocs when I installed it, nor will it when I reinstall it:
>
>> sudo gem install rails -v=2.1.0
> Bulk updating Gem source index for: http://gems.rubyforge.org/
> Successfully installed rails-2.1.0
> 1 gem installed
I was finally able to get rdocs for Rails 2.1 to build once I upgraded
my rubygem install to version 1.2.


-- 
Greg Donald
http://destiney.com/

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---