Angular.js: Return a promise that is already resolved

I have an Angular service that either should return an existing object or call a webservice and load some data. To have a consistent client API I want to use a promise in both cases.

It’s not very hard to do this using Angular:

	(function(app){
	var dataService=function($q,$http){
	var getData=function(fromCache){
	if(fromCache){
	return $q.when({data:[{Id:1, Name:'Product X'},{Id:2, Name:'Product Y'}]});
	}
	else{
	return $http.get('http://sampleserver/api/products');
	}
	};
	};
	app.factory('dataService',['$q','$http',dataService]);
	}(angular.module('sampleApp')));

view raw dataService.js hosted with ❤ by GitHub