i am using $timeout in my controller but its not working!

app.controller(Friendsrequests,['$http','$log','$location','$timeout','$scope', function($http,$log,$location,$timeout,$scope){

//getting base url of application

this.baseUrl = function() {

        var base_url = window.location.origin;



        var pathArray = window.location.pathname;

        return base_url;

    //  return base_url+pathArray;

                };

// assigning to a variablebase_url('login/f_request');

var ThroughUrl = this.baseUrl()+'/keon/login/f_request';





//declare a variable

var ata = this;

ata.notifications = [ ] ;

ata.counts=' ';

//sending ajax request

 function getNotifications()

{

$http({method: 'POST', url: ThroughUrl,})

.success(function(data) {

    // this callback will be called asynchronously

    // when the response is available



//assign data to the variable

ata.notifications=data;

ata.counts =data.length;



  }).

  error(function(data, status, headers, config) {

    // called asynchronously if an error occurs

    // or server returns response with an error status.

  });



}



$timeout(function() {

    getNotifications();

}, 1000);



}]);

• what is the issue .