orbit-basic/app/models/app_manager.rb

class AppManager 
  include Mongoid::Document
  include Mongoid::Timestamps
  
  belongs_to :user,index: true
  
  belongs_to :managing_app, :polymorphic => true,index: true  #,:class_name => 'ModuleApp',:inverse_of => :managers,:foreign_key => "user_id" 
  belongs_to :sub_managing_app, :polymorphic => true  #,:class_name => 'ModuleApp',:inverse_of => :sub_manager,:foreign_key => "sub_user_id"
  
  belongs_to :rule_creator,:class_name => 'User'

end