app/models/mixins/has_many_orchestration_stack_mixin.rb
module HasManyOrchestrationStackMixin
extend ActiveSupport::Concern
included do
has_many :orchestration_stacks,
:foreign_key => :ems_id,
:dependent => :destroy
has_many :orchestration_stacks_outputs, :through => :orchestration_stacks, :source => :outputs
has_many :orchestration_stacks_parameters, :through => :orchestration_stacks, :source => :parameters
has_many :orchestration_templates,
:foreign_key => :ems_id,
:dependent => :destroy
has_many :orchestration_stacks_resources,
:through => :orchestration_stacks,
:source => :resources
has_many :direct_orchestration_stacks,
-> { where(:ancestry => nil) },
:foreign_key => :ems_id,
:class_name => "OrchestrationStack"
end
end