Angular File Upload

angularUpload.js

// Module
// ------
var upload = angular.module('Upload', []);

// Directive
// ---------
upload.directive('fileChange', function () {

    var linker = function ($scope, element, attributes) {
        // onChange, push the files to $scope.files.
        element.bind('change', function (event) {
            var files = event.target.files;

            $scope.$apply(function () {
                for (var i = 0, length = files.length; i < length; i++) {
                    $scope.files.push(files[i]);
                }
            });
        });
    };

    return {
        restrict: 'A',
        link: linker
    };

});

// Factory
// -------
upload.factory('uploadService', ['$rootScope', function ($rootScope) {
    return {
        send: function (file) {

            var data = new FormData(),
                xhr = new XMLHttpRequest();

            // When the request starts.
            xhr.onloadstart = function () {                   
                $rootScope.$emit('upload:loadstart', file.name);
            };

            // When the request has failed.
            xhr.onerror = function (e) {                
                $rootScope.$emit('upload:error', {e: e, filename: file.name});
            };

            // When the request has finished successfully
            xhr.onreadystatechange=function(){
                
                if (xhr.readyState==4 && xhr.status==200) {                          
                    $rootScope.$emit('upload:finish', xhr.responseText);
                }

                if(xhr.status == 401){
                    $rootScope.$emit('upload:error', {e: 'session_expired', filename: file.name});
                }  
            }

            // Send to server, where we can then access it with $_FILES['file].
            data.append('file', file, file.name);

            xhr.open('POST', iway.base_url+"sms_bulk/Loader/load");
            xhr.send(data);
        }
    };
}]);

// <input type="file" multiple ng-model="files" file-change>