javascript - How to access $http.get caller variable -

consider simple angularjs code:

$http.get( url ).then(function ( response ) {     var cache = new cache(url);     cache.response = response; }); 

my problem above code nondeterministic. sometime url not match when response server.

i edit 10 contact data simultanously. work, cache requests server , put javascript object.

i have written simple service achieve that, suffers above bug.

here code:

angular.module('myapp')   .factory('save', function($http, $q) {      // private object     var cache = function(url) {       this._url = url;       this.response = {};       this.savedeferred = null;       this.savedeferredfulfilled = false;     };      cache.prototype.$save = function () {       return $http.put( this._url ).then(function (response) {         this.response = response;         return response;       });     };      //public method     var draft = {       caches: {},       get: function ( url ) {         if (draft.caches.hasownproperty(url)) {           return draft.caches.url.response;         } else {           return $http.get( url ).then(function ( response ) {             var cache = new cache(url);             cache.response = response;             return cache;           });         }       },       save: function(url) {         if (draft.caches.url.savedeferred) {           if (!draft.caches.url.savedeferredfulfilled) {             draft.caches.url.savedeferred.reject(new error('forced timeout'));           }           draft.caches.url.savedeferred = null;           draft.caches.url.savedeferredfulfilled = false;         }          draft.caches.url.savedeferred = $q.defer();         draft.caches.url.response.version = (parseint(draft.caches.url.response.version) + 1).tostring();          $http.put(url, draft.caches.url.response)           .success(function(data) {             console.log('some data returned');             console.log(data);             draft.caches.url.savedeferredfulfilled = true;             draft.savedeferred.resolve(data);           })           .error(function(error) {             console.log('some error occured in save.creates');             console.log(error);             draft.savedeferred.reject(error);           });         return draft.savedeferred.promise;       }     };      return draft;   }); 

it must basic, i'm missing here.