Connecting physical switch to computer systems

app/models/physical_network_port.rb

@@ -3,7 +3,21 @@ class PhysicalNetworkPort < ApplicationRecord
   belongs_to :physical_switch, :foreign_key => :switch_id, :inverse_of => :physical_network_ports
 
   has_one :connected_port, :foreign_key => "connected_port_uid", :primary_key => "uid_ems", :class_name => "PhysicalNetworkPort", :dependent => :nullify, :inverse_of => :connected_port
+
   has_one :connected_physical_switch, :through => :connected_port, :source => :physical_switch
 
+  virtual_has_one :connected_computer_system
+
   alias_attribute :name, :port_name
+
+  #
+  # Gets the computer system that is connected through a
+  #   physical network port
+  #
+  # @return The computer system managed entity connected to this port
+  #   or nil if none computer system is connected.
+  #
+  def connected_computer_system
+    connected_port&.guest_device&.hardware&.computer_system&.managed_entity
+  end
 end

app/models/physical_switch.rb

@@ -6,6 +6,8 @@ class PhysicalSwitch < Switch
   has_one :hardware, :dependent => :destroy, :foreign_key => :switch_id, :inverse_of => :physical_switch
   has_many :physical_network_ports, :dependent => :destroy, :foreign_key => :switch_id
 
+  has_many :connected_components, :through => :physical_network_ports, :source => :connected_physical_component
+
   def my_zone
     ems = ext_management_system
     ems ? ems.my_zone : MiqServer.my_zone