Rails - Jan 2006 - stack level too deep from has_many / belongs_to relationship

I have the following 3 models (2 models joined by an intermediate):

1. class Exercise < ActiveRecord::Base
2.   has_many :routines, :class_name=>''RoutineExercise''
3. end

1. class Routine < ActiveRecord::Base
2.   has_many :exercises,
3.            :class_name=>''RoutineExercise'',
4.            :order=>''position''
5. end

1. class RoutineExercise < ActiveRecord::Base
2.   set_table_name "exercises_routines"
3.   set_primary_key ''join_id''
4.
5.   belongs_to :routine
6.   belongs_to :exercise
7.
8.   acts_as_list :scope => :routine_id
9. end

 From this I''m getting ''stack level too deep'' errors:

#{RAILS_ROOT}/vendor/rails/activerecord/lib/active_record/associations.rb:877:in
`create_has_many_reflection''
#{RAILS_ROOT}/vendor/rails/activerecord/lib/active_record/associations.rb:346:in
`has_many''
#{RAILS_ROOT}/app/models/routine.rb:2
#{RAILS_ROOT}/app/models/routine_exercise.rb:5
#{RAILS_ROOT}/app/models/routine.rb:2
... snip ...
#{RAILS_ROOT}/app/models/routine_exercise.rb:5
#{RAILS_ROOT}/app/models/routine.rb:2
#{RAILS_ROOT}/app/controllers/items_controller.rb:462:in `const_get''
#{RAILS_ROOT}/app/controllers/items_controller.rb:462:in `item_class''
#{RAILS_ROOT}/app/controllers/items_controller.rb:112:in `new''


So this seems to be getting into a recursive loop around the 
RoutineExercise belonging to Routine and Routine having many 
RoutineExercises, but I can''t work out why.

Thanks in advance.

-- 
R.Livsey
http://livsey.org

Turns out to be a combination of edge rails and rails_engines.

There''s a patch here which fixes it:
https://opensvn.csie.org/traccgi/rails_engines/trac.cgi/ticket/63

Thanks.

-- 
R.Livsey
http://livsey.org

Richard Livsey wrote:
> I have the following 3 models (2 models joined by an intermediate):
> 
> 1. class Exercise < ActiveRecord::Base
> 2.   has_many :routines,
:class_name=>''RoutineExercise''
> 3. end
> 
> 1. class Routine < ActiveRecord::Base
> 2.   has_many :exercises,
> 3.            :class_name=>''RoutineExercise'',
> 4.            :order=>''position''
> 5. end
> 
> 1. class RoutineExercise < ActiveRecord::Base
> 2.   set_table_name "exercises_routines"
> 3.   set_primary_key ''join_id''
> 4.
> 5.   belongs_to :routine
> 6.   belongs_to :exercise
> 7.
> 8.   acts_as_list :scope => :routine_id
> 9. end
> 
>  From this I''m getting ''stack level too deep''
errors:
> 
>
#{RAILS_ROOT}/vendor/rails/activerecord/lib/active_record/associations.rb:877:in
> `create_has_many_reflection''
>
#{RAILS_ROOT}/vendor/rails/activerecord/lib/active_record/associations.rb:346:in
> `has_many''
> #{RAILS_ROOT}/app/models/routine.rb:2
> #{RAILS_ROOT}/app/models/routine_exercise.rb:5
> #{RAILS_ROOT}/app/models/routine.rb:2
> ... snip ...
> #{RAILS_ROOT}/app/models/routine_exercise.rb:5
> #{RAILS_ROOT}/app/models/routine.rb:2
> #{RAILS_ROOT}/app/controllers/items_controller.rb:462:in
`const_get''
> #{RAILS_ROOT}/app/controllers/items_controller.rb:462:in
`item_class''
> #{RAILS_ROOT}/app/controllers/items_controller.rb:112:in `new''
> 
> 
> So this seems to be getting into a recursive loop around the 
> RoutineExercise belonging to Routine and Routine having many 
> RoutineExercises, but I can''t work out why.
> 
> Thanks in advance.
>