Duplicate http post in Angular JS

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ASP.NET4

AngularJs

I have a problem with $http post in Angularjs. Any one can help on how to avoid duplicated requests... Here is my code in controller

var myApp = angular.module("myApp", ['ngRoute', 'pascalprecht.translate']);
myApp.controller('mainController', function ($scope, $translate, $location, $rootScope, $http, $filter, $interval) {
var myInit = function () {
            $http.post("API_V1/api.asmx/fetchALLRate", { data: {} })
                  .success(function (data, status, headers, config) {
                   this.objRate = $.parseJSON(data.d);
                   //do something...
            });
        };
angular.element(document).ready(myInit);

And here is image for duplicate request error
http://i.stack.imgur.com/5fEyy.png[^]

Thank you in advance.. hope that anyone could help me out...btw, sorry for my bad english.