https://rekrutacja.pedagogium.pl/pdg-irk-app/content/script/irk/services/i18n/i18nToolFactory.js

1angular.module('irk')
2.factory('i18n', function ($http, Session, $q) {
3
4	  var i18nTool = {};
5	  i18nTool.cache = {};
6	  
7	  i18nTool.clearCache = function() {
8		  i18nTool.cache = {};
9	  }	
10	  
11	  i18nTool.viewPolicyChecker = function (key) {
12		    return $http
13		      .get('REST/i18n/'+key, {
14		      })
15		      .then(function (res) {
16		    	  return res.data;
17		      });
18		  };
19	  
20	  i18nTool.get = function (key) {
21		  if(!(key in this.cache)) {
22			  this.cache[key] = this.viewPolicyChecker(key);
23		  } 
24		  result = this.cache[key];
25
26		  var deferred = $q.defer();
27		  deferred.resolve(result);
28		  return deferred.promise;
29	  };
30	  
31	  i18nTool.translateSelectOptions = function(selectOptions) {
32	    selectOptions.forEach(function(value) {
33	    	if(value.localisable) {
34		    	i18nTool.get(value.label).then(function(translated) {
35	    			value.label = translated;
36	    		});
37	    	}
38  	});
39	  };
40	  
41	  Session.registerObserverCallback(function() {
42		  i18nTool.clearCache();
43	  });
44	  
45	  return i18nTool;
46	});