angular

  .module('app', [

    'firebase'

  ])

  .constant('FBURL', 'https://invoice-pro-5000.firebaseio-demo.com')

  .factory('clients', clients)

  .factory('invoices', invoices)

  .controller('InvoiceCtrl', InvoiceController);

​

​

function clients(FBURL, $firebaseObject) {

  return function(clientId) {

    var ref = new Firebase(FBURL).child('clients').child(clientId);

    return $firebaseObject(ref);

  };

}

​

function invoices(FBURL, $firebaseArray) {

  return function(clientId) {

    var ref = new Firebase(FBURL).child('clientInvoices').child(clientId);

    return $firebaseArray(ref);

  };

}

​

function InvoiceController($scope, clients, invoices) {

  var fakeRouteParam = 1;

  $scope.client = clients(fakeRouteParam);

  $scope.invoices = invoices(fakeRouteParam);

}