app/models/operating_system_flavor.rb
class OperatingSystemFlavor < ApplicationRecord
acts_as_miq_taggable
belongs_to :provisioning_manager
has_and_belongs_to_many :customization_scripts
has_and_belongs_to_many :customization_script_ptables,
:join_table => :customization_scripts_operating_system_flavors,
:association_foreign_key => :customization_script_id
has_and_belongs_to_many :customization_script_media,
:join_table => :customization_scripts_operating_system_flavors,
:association_foreign_key => :customization_script_id
end