app/assets/javascripts/angular/controllers/virtual_machine_controller.js.coffee
angular.module('app.railsbox').controller 'VirtualMachineController', ($scope) ->
$scope.addPort = ->
$scope.configuration[$scope.environment].vm_ports.push { guest: $scope.newGuestPort, host: $scope.newHostPort }
$scope.newGuestPort = null
$scope.newHostPort = null
$scope.deletePort = (index) ->
$scope.configuration[$scope.environment].vm_ports.splice index, 1