AngularJS service file upload within ngRepeat

A simple service to upload a file from input elements generated by ngRepeat.

by Jenny Louthan

HTML

<div ng-controller = "myCtrl">
    <div ng-repeat="fileInput in fileInputs">
        <input type="file" file-model="{{'myFile' + $index}}"/>
        <button ng-click="uploadFile('myFile' + $index)">upload me</button>
    </div>
</div>

JavaScript

var myApp = angular.module('myApp', []);

myApp.directive('fileModel', ['$parse', function ($parse) {
    return {
        restrict: 'A',
        link: function(scope, element, attrs) {
            var model, modelSetter;
            
            attrs.$observe('fileModel', function(fileModel){
                model = $parse(attrs.fileModel);
                modelSetter = model.assign;
            });
            
            element.bind('change', function(){
                scope.$apply(function(){
                    modelSetter(scope.$parent, element[0].files[0]);
                });
            });
        }
    };
}]);

myApp.service('fileUpload', ['$http', function ($http) {
    this.uploadFileToUrl = function(file, uploadUrl){
        var fd = new FormData();
        fd.append('file', file);
        $http.post(uploadUrl, fd, {
            transformRequest: angular.identity,
            headers: {'Content-Type': undefined}
        })
        .success(function(){
        })
        .error(function(){
        });
    }
}]);

myApp.controller('myCtrl', ['$scope', 'fileUpload', function($scope, fileUpload){
    $scope.fileInputs = [1,2,3];
    $scope.uploadFile = function(filename){
        var file = $scope[filename];
        console.log('file is ' + JSON.stringify(file));
        console.dir(file);
        var uploadUrl = "http://httpbin.org/post";
        fileUpload.uploadFileToUrl(file, uploadUrl);
    };
    
}]);