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require "active_record/associations/through_association_scope"
module ActiveRecord
module Associations
class HasOneThroughAssociation < HasOneAssociation
include ThroughAssociationScope
def replace(new_value)
create_through_record(new_value)
@target = new_value
end
private
def create_through_record(new_value) #nodoc:
klass = @reflection.through_reflection.klass
current_object = @owner.send(@reflection.through_reflection.name)
if current_object
new_value ? current_object.update_attributes(construct_join_attributes(new_value)) : current_object.destroy
else
@owner.send(@reflection.through_reflection.name, klass.send(:create, construct_join_attributes(new_value))) if new_value
end
end
private
def find_target
with_scope(construct_scope) { @reflection.klass.find(:first) }
end
end
end
end
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