Rails - Jan 2007 - Got a problem with has_many through

Hi,

today I''ve tried to replace one of my habtm associations with has_many
through but it just wouldn''t work. I''m sort of desperate,
since I
really don''t have a clue what the problem is.

Maybe someone''s got the time and patience to cast an eye on this.

These are my classes:

class Role < ActiveRecord::Base
  has_many :permissions
  has_many :rights  , :through => :permissions
end

class Right < ActiveRecord::Base
  has_many :permissions
  has_many :roles , :through => :permissions
end

class Permission < ActiveRecord::Base
  belongs_to :rights
  belongs_to :roles
end

And this is the error that comes up(using the console):
>> role = Role.find_first
=> #<Role:0x9c2ad68 @attributes={"name"=>"adfsadf",
"updated_on"=>"2007-01-08 15:41:00",
"id"=>"3", "active"=>"0",
"created_at"=>"2007-01-08
12:34:00"}>
>> right = Right.find_first
=> #<Right:0x9c19554
@attributes={"updated_on"=>"2007-01-08 16:55:00",
"id"=>"1", "path"=>"/rights",
"active"=>"0",
"created_at"=>"2007-01-08
12:34:00"}>
>> role.rights << right
NameError: uninitialized constant Role::Rights
        from
./script/../config/../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:478:in
`const_missing''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/base.rb:1357:in
`compute_type''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/reflection.rb:125:in
`send''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/reflection.rb:125:in
`klass''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:115:in
`find_target''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/associations/association_proxy.rb:135:in
`load_target''
        from
./script/../config/../config/../vendor/rails/activerecord/lib/active_record/associations/has_many_through_association.rb:54:in
`<<''
        from (irb):3
>> exit
Can anybody help me with this?

Greetings

Michael Kastner


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> today I''ve tried to replace one of my habtm associations with
has_many
 > through but it just wouldn''t work. I''m sort of
desperate, since I
 > really don''t have a clue what the problem is.

I had to use edge rails, apply fix for #6466, and use something like the 
following extension to get push, delete, and << working properly

has_many :referees_out,
          :through => :refereeships,
          :source => :target_user do
       def construct_join_attributes(associate)
         super.merge({:connection_type => ''R''})
       end
     end

--Ian



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