AngularJS の broadcast pattern.

books.controller.js

var ctrl = [ '$scope', 'Book', function( scope, Book ) {
  scope.$on( 'books.update', function( event ) {
    scope.books = Book.books;
  });

  scope.books = Book.books;
}];

module.controller( "books.list", ctrl );

books.service.js

module.service( 'Book', [ '$rootScope', function( $rootScope ) {
  var service = {
    books: [
      { title: "Magician", author: "Raymond E. Feist" },
      { title: "The Hobbit", author: "J.R.R Tolkien" }
    ],

    addBook: function ( book ) {
      service.books.push( book );
      $rootScope.$broadcast( 'books.update' );
    }
  }

  return service;
}]);