upload file in angularjs

upload_file.js

(function(angular){
	angular.module('folio.components.project.thumbUpload', [])
	.factory('ThumbUpload', ['$q', '$http', '$log', ThumbUploadProvider]);

	function ThumbUploadProvider($q, $http, $log){
		function ThumbUploadService(){

			this.upload = function(file, filename){
				var deferred = $q.defer();
				var fd = new FormData();
				var filename = filename;

		        fd.append('filename', filename);
		        fd.append('file', file);

		        $http.post('/api/upload/thumb', fd, {
		            transformRequest: angular.identity,
		            headers: {'Content-Type': undefined}
		        }).success(function(data){
		        	deferred.resolve(data.data);
		        }).error(function(data){
		        	deferred.reject(data);
		        });

		        return deferred.promise;
			}
		}

		return new ThumbUploadService();
	}

}(window.angular));