Promises Example

app.js

var app = angular.module('app', []);
app.service('MyHttpService', ['$http', MyHttpService]);
function MyHttpService($http) {
  
  this.doHttpCall = function() {
    return $http.get('/foo.json');
  };
}

app.service('MyService', ['$q', MyService]);
function MyService($q) {
  
  this.doSomething = function() {
    return $q(function(resolve, reject) {
      resolve('hi mom!');
    });
  };
}

app.controller('MyController', ['$q', 'MyHttpService', 'MyService', MyController]);
function MyController($q, MyHttpService, MyService) {
  
  $q.all([MyHttpService.doHttpCall(), MyService.doSomething()]).then(function(myHttpServiceResult, myServiceResult) {
    console.log(myHttpServiceResult.name);  // steve
    console.log(myServiceResult); // hi mom!
  });
}

foo.json

{
  name: 'steve'
}