Rails - Jan 2009 - newbie trying self-referencing :through via REST model

I''ve read through countless blogs and the docs and can''t seem
to get
what I expect. I also tried irc on freenode, but they ignored me. I
must have a case of the mange or something.

I have a Person model (on a people table) and I want a hierarchy of
masters and servants. I''m doing this via a Vassalship model. When I
try to assign a master to a servant like so :

     juniorperson.master=seniorperson

I get NoMethodError: undefined method `update_attributes'' for
#<Class:
0x48be738>

And who knows what class that was. I can do
seniorperson.servants<<juniorperson   no problem, but then I get a nil
for juniorperson.master ?!?!

My models look like this :

class Person < ActiveRecord::Base
	
has_many
:vassalships,:class_name=>''Vassalship'',:foreign_key=>:master_id
	has_one :master,:through=>:vassalships,:source=>:master;
	has_many :servants,:through=>:vassalships,:source=>:servant;
end

class Vassalship < ActiveRecord::Base
	belongs_to
:master,:class_name=>''Person'',:foreign_key=>''master_id''
	belongs_to
:servant,:class_name=>''Person'',:foreign_key=>''servant_id''
end

my tables are here, if you need to see them: http://pastie.org/352858,
and the full console track is here : http://pastie.org/352871

I''m doing something wrong, but I don''t know what. And anyone
got a
better idea for the relationship? Vassalship seems a bit obscure.
--~--~---------~--~----~------------~-------~--~----~
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 Mon, Jan 5, 2009 at 6:14 PM, itsastickup
<lorrimang-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:
> My models look like this :
>
> class Person < ActiveRecord::Base
>
> has_many
:vassalships,:class_name=>''Vassalship'',:foreign_key=>:master_id
>        has_one :master,:through=>:vassalships,:source=>:master;
>        has_many :servants,:through=>:vassalships,:source=>:servant;
> end
>
> class Vassalship < ActiveRecord::Base
>        belongs_to
:master,:class_name=>''Person'',:foreign_key=>''master_id''
>        belongs_to
:servant,:class_name=>''Person'',:foreign_key=>''servant_id''
> end
You only need one model, Person should suffice:

class Person < ActiveRecord::Base

  belongs_to :master, :class_name => ''Person'', :foreign_key
=> ''master_id''

  has_many :servants, :class_name => ''Person'', :foreign_key
=> ''master_id''

end

Let me know how you get on.

Regards,
Franz

--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---

I have a need for REST (as well as other things), as mentioned, and
for that I require the go-between model. In anycase presumably my
original question does have an answer, no? Perhaps :through does not
work self-referentially, although I would be surprised. But the docs
don;t have it and blogs haven''t helped.

On 5 Jan, 22:45, "Franz Strebel"
<franz.stre...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Mon, Jan 5, 2009 at 6:14 PM, itsastickup
<lorrim...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> You only need one model, Person should suffice:
>
> class Person < ActiveRecord::Base
>
>   belongs_to :master, :class_name => ''Person'',
:foreign_key => ''master_id''
>
>   has_many :servants, :class_name => ''Person'',
:foreign_key => ''master_id''
>
> end
>
> Let me know how you get on.
>
> Regards,
> Franz
--~--~---------~--~----~------------~-------~--~----~
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@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

try:

class Person < ActiveRecord::Base

 
has_many
:vassalships,:class_name=>''Vassalship'',:foreign_key=>''master_id''
        has_many :vassalship_belongings, :class_name =>
''Vassalship'', :foreign_key => ''slave_id''
        has_one :master,:through=>:vassalships,:source=>:person
 
has_many :servants,:through=>:vassalship_belongings,:source=>:person
end

class Vassalship < ActiveRecord::Base
 
belongs_to
:master,:class_name=>''Person'',:foreign_key=>''master_id''
 
belongs_to
:servant,:class_name=>''Person'',:foreign_key=>''servant_id''
end

On Jan 6, 12:00 pm, itsastickup
<lorrim...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
wrote:
> I have a need for REST (as well as other things), as mentioned, and
> for that I require the go-between model. In anycase presumably my
> original question does have an answer, no? Perhaps :through does not
> work self-referentially, although I would be surprised. But the docs
> don;t have it and blogs haven''t helped.
>
> On 5 Jan, 22:45, "Franz Strebel"
<franz.stre...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > On Mon, Jan 5, 2009 at 6:14 PM, itsastickup
<lorrim...-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> > You only need one model, Person should suffice:
>
> > class Person < ActiveRecord::Base
>
> >   belongs_to :master, :class_name => ''Person'',
:foreign_key => ''master_id''
>
> >   has_many :servants, :class_name => ''Person'',
:foreign_key => ''master_id''
>
> > end
>
> > Let me know how you get on.
>
> > Regards,
> > Franz
--~--~---------~--~----~------------~-------~--~----~
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@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---