Cómo hacer has_many con un modelo que está en un espacio de nombres

Question

Rails 3 nos dio estos simpáticos generadores que colocan modelos y controladores en espacios de nombres, ¡whoo! Pero ahora no puedo asociarlos con otros modelos.

Estoy tratando de lograr un has_many a través de la asociación con modelos de espacio de nombres. He estado buscando por Internet durante unos días y no he encontrado ningún ejemplo.

/app/models/templates/practice.rb

class Templates::Practice < ActiveRecord::Base 
    has_many :practice_sequences, :order => "position", :dependent => :destroy, :class => 'Templates::PracticeSequence' 
    has_many :seasons, :through => :practice_sequences, :order => "position", :class => 'Templates::Season' 
end 

/app/models/templates/season.rb

class Templates::Season < ActiveRecord::Base 
    has_many :practice_sequences, :order => "position", :class => 'Templates::PracticeSequence' 
    has_many :practices, :through => :practice_sequences, :order => "position", :class => 'Templates::Practice' 
end 

/app/models/templates/practice_season.rb

class Templates::PracticeSequence < ActiveRecord::Base 
    belongs_to :practice, :class => 'Templates::Practice' 
    belongs_to :season, :class => 'Templates::Season' 
end 

Y aquí es el error

/Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/core_ext/hash/keys.rb:43:in `assert_valid_keys': Unknown key(s): class (ArgumentError) 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activerecord-3.0.1/lib/active_record/associations.rb:1739:in `create_has_many_reflection' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activerecord-3.0.1/lib/active_record/associations.rb:983:in `has_many' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activerecord-3.0.1/lib/active_record/autosave_association.rb:137:in `has_many' 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/app/models/templates/practice.rb:3 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:227:in `load_dependency' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in `require' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:346:in `require_or_load' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:300:in `depend_on' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:216:in `require_dependency' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/engine.rb:138:in `eager_load!' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/engine.rb:137:in `each' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/engine.rb:137:in `eager_load!' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/engine.rb:135:in `each' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/engine.rb:135:in `eager_load!' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/application.rb:108:in `eager_load!' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/application/finisher.rb:41 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/initializable.rb:25:in `instance_exec' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/initializable.rb:25:in `run' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/initializable.rb:50:in `run_initializers' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/initializable.rb:49:in `each' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/initializable.rb:49:in `run_initializers' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/application.rb:134:in `initialize!' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/application.rb:77:in `send' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/railties-3.0.1/lib/rails/application.rb:77:in `method_missing' 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/../config/environment.rb:5 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/spec_helper.rb:12:in `require' 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/spec_helper.rb:12 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/spork-0.9.0.rc2/lib/spork.rb:23:in `prefork' 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/spec_helper.rb:7 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/helpers/templates/practice_templates_helper_spec.rb:1:in `require' 
from /Users/jspooner/Documents/SpoonerMedia/FooBars/coach_app/todo/spec/helpers/templates/practice_templates_helper_spec.rb:1 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/configuration.rb:327:in `load' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/configuration.rb:327:in `load_spec_files' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/configuration.rb:327:in `map' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/configuration.rb:327:in `load_spec_files' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/command_line.rb:18:in `run' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/runner.rb:55:in `run_in_process' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/runner.rb:46:in `run' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/lib/rspec/core/runner.rb:10:in `autorun' 
from /Users/jspooner/.rvm/gems/ree-1.8.7-2010.02/gems/rspec-core-2.2.1/bin/rspec:4 

Answer 1

No he intentado usar espacios de nombres para los modelos, pero cuando especifique una clase para una asociación, debe usar: class_name en lugar de: class. El resto se ve bien para mí, así que quizás sea lo único que necesites cambiar.