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POAngular Service Definition: service or factory
 

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    <p>I am an angular newbie, I am building an application, one thing really puzzling me is there are couple of ways of defining a service, and I read more from this link: <a href="http://iffycan.blogspot.com/2013/05/angular-service-or-factory.html" rel="nofollow">How to define service</a> then it seems there is no big difference among the ways of defining a service.</p> <p>but I just noticed one difference which I think is different:</p> <p>see this service I get from here <a href="http://jsfiddle.net/2by3X/5/" rel="nofollow">http://jsfiddle.net/2by3X/5/</a></p> <pre class="lang-js prettyprint-override"><code>var app = angular.module('myApp', []); app.service('test', function($timeout, $q) { var self = this; this.getSomething = function() { return self.getData().then(function(data) { return self.compactData(data); }); }; this.getData = function() { var deferred = $q.defer(); $timeout(function() { deferred.resolve("foo"); }, 2000); return deferred.promise; }; this.compactData = function(data) { var deferred = $q.defer(); console.log(data); $timeout(function() { deferred.resolve("bar"); }, 2000); return deferred.promise; }; }); </code></pre> <p>if I define this service using "factory" like below, one function cannot call other functions of the service.</p> <pre class="lang-js prettyprint-override"><code>app.factory('test', function($timeout, $q) { return { getSomething : function() { return getData().then(function(data) { return compactData(data); }); }, getData : function() { var deferred = $q.defer(); $timeout(function() { deferred.resolve("foo"); }, 2000); return deferred.promise; }, compactData : function(data) { var deferred = $q.defer(); console.log(data); $timeout(function() { deferred.resolve("bar"); }, 2000); return deferred.promise; }, }; }); </code></pre> <p>I will get this in the browser console:</p> <pre><code>[08:41:13.701] "Error: getData is not defined .getSomething@http://fiddle.jshell.net/_display/:47 Ctrl1@http://fiddle.jshell.net/_display/:75 invoke@http://code.angularjs.org/1.0.0/angular-1.0.0.js:2795 instantiate@http://code.angularjs.org/1.0.0/angular-1.0.0.js:2805 </code></pre> <p>Can anyone explain this? thanks.</p>
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