I have this situation:
A ‘processable’ model has_many :preprocessors and/or :postprocessors
I do that:
@processor_and_processable.id =
@processor_and_processable.processable_id =
@processor_and_processable.processable_type =
@processor_and_processable.processor_id =
@processor_and_processable.processor_type =
@processor_and_processable.created_at =
@processor_and_processable.updated_at =
@processor_and_processable.lock_version =
@processor_and_processable.created_by =
@processor_and_processable.updated_by =
class ProcessorAndProcessable < ActiveRecord::Base
belongs_to :postprocessor, :foreign_key => :processor_id
belongs_to :preprocessor, :foreign_key => :processor_id
belongs_to :processable, :polymorphic => true
end
@foo.something=
class Foo < ActiveRecord::Base
has_many :processor_and_processables, :as => :processable
has_many :preprocessors, :through => :processor_and_processables
has_many :postprocessors, :through => :processor_and_processables
end
@processor.id =
@processor.descripcion =
@processor.task =
@processor.type =
@processor.created_at =
@processor.updated_at =
@processor.lock_version =
@processor.created_by =
@processor.updated_by =
class Processor < ActiveRecord::Base
end
class Postprocessor < Processor
has_many :processor_and_processables,
:foreign_key => “processor_id”,
:conditions => [‘processor_type =?’,‘Postprocessor’]
has_many :processables, :through => :processor_and_processables
end
class Preprocessor < Processor
has_many :processor_and_processables,
:foreign_key => ‘processor_id’,
:conditions => [‘processor_type =?’,‘Preprocessor’]
has_many :processables, :through => :processor_and_processables
end
…later in the console
foo = Foo.new
foo.postprocessors
[]
foo.preprocessors
[]
foo.postprocessors << Postprocessor.new(:task => “send_mails_to_subscripted_users”)
ActiveRecord::HasManyThroughCantAssociateNewRecords: Cannot associate
new records through ‘Foo#processor_and_processables’ on ‘#’. Both
records must have an id in order to create the has_many :through record
associating them.
Help!
Juan M…
