gistfile1.js

// Set up the current user
app.services.factory('CurrentUser', function(User) {

  var bootstrapCurrentUser = function() {
    var data = JSON.parse(currentUser);
    var user = new User(data);
    return user;
  }

  return bootstrapCurrentUser() || User.me();
});

// The User resource
app.services.factory('User', function($resource) {
  return $resource('/users/:id.json', {},
    {
      me: {
        method: 'GET',
        params: {id: 'me'}
      }
    });
});


// Wait for current user load to complete using $promise, before
// alerting the user's age.
CurrentUser.$promise.then(function(data) {
  alert("User is " + data.age + " years old!");
});

var User = $resource('/user/:userId', {userId:'@id'});
User.get({userId:123})
.$promise.then(function(user) {
$scope.user = user;
});

https://docs.angularjs.org/api/ngResource/service/$resource#!