Question

我有指令“注释”，它基本上是一个笔记小部件，我可以在任何页面上添加，只需添加一个名称和ID，以允许人们为该项目添加注释。

用户应该能够使用ng-file-upload将文件上传到他们的笔记中，但我很难通过ng-file-upload指令填充$scope.files。我很确定它和照相机一样愚蠢，但我无法弄明白。

所以当我选择文件时，为什么$ scope.files没有填充？

指令：

angular.module('app').directive('notes', [function () {
    return {
        restrict: 'E',
        templateUrl: 'notes.html',
        scope: {
            itemId: '@',
            itemModel: '@'
        },
        controller: ['$scope', 'Upload', function($scope, Upload) {
            $scope.files = [];
            $scope.notes = [
              {title: 'first title'},
              {title: 'second title'}
            ];

            $scope.$watch('files', function (files) {
                console.log(files);
                $scope.formUpload = false;
                if (files != null) {
                    for (var i = 0; i < files.length; i++) {
                        $scope.errorMsg = null;
                        (function (file) {
                            uploadUsingUpload(file);
                        })(files[i]);
                    }
                }
            });

            function uploadUsingUpload(file) {
                file.upload = Upload.upload({
                    url: '/api/v1/notes/upload_attachment',
                    method: 'POST',
                    //headers: {
                    //  'my-header': 'my-header-value'
                    //},
                    //fields: {username: $scope.username},
                    file: file,
                    fileFormDataName: 'file'
                });

                file.upload.then(function (response) {
                    $timeout(function () {
                        file.result = response.data;
                    });
                }, function (response) {
                    if (response.status > 0)
                        $scope.errorMsg = response.status + ': ' + response.data;
                });

                file.upload.progress(function (evt) {
                    // Math.min is to fix IE which reports 200% sometimes
                    file.progress = Math.min(100, parseInt(100.0 * evt.loaded / evt.total));
                });

                file.upload.xhr(function (xhr) {
                    // xhr.upload.addEventListener('abort', function(){console.log('abort complete')}, false);
                });
            }

        }]
    };
}]);

模板：

<ul>
  <li ng-repeat="note in notes">
    {{note.title}}
    <div ngf-select ng-model="files"><b>upload</b></div>
  </li>
</ul>
<pre style="border: 1px solid red;">{{files | json}}</pre>

Answer 1

我有点迟到了，但是你在更新$ scope.files属性时遇到问题的原因是因为你的ng-repeat中正在创建一个新的范围。

<ul>
    <li ng-repeat="note in notes">
        {{note.title}}
        <div ngf-select ng-model="$parent.files"><b>upload</b></div>
    </li>
</ul>
<pre style="border: 1px solid red;">{{files | json}}</pre>

有关角度检查https://github.com/angular/angular.js/wiki/Understanding-Scopes

中作用域的工作原理的更多信息

Answer 2

ng-file-upload在封闭范围内的“files”模型（或绑定到ng-model的属性）中设置所选文件对象。在这种情况下，封闭范围是ng-repeat。如果在note对象中设置属性“files”并将其设置为ng-model，它应该可以工作。

http://plnkr.co/edit/oVpgrSWQAcFdV26aVKv7?p=preview

<ul>
  <li ng-repeat="note in notes" >
    {{note.title}}
    <div ngf-select ng-model="note.files"><b>upload</b></div>
  </li>
</ul>

  // In directive
  $scope.notes = [{
    title: 'first title',
    files: []
  }, {
    title: 'second title',
    files: []
  }];

 //And you can watch the file model
  $scope.$watch(function($scope) {
    return $scope.notes.
    map(function(note) {
      return note.files;
    });
  }, function(files) {
      console.log('Files' + files);
  }, true)

Answer 3

我使用ngf-select添加了动态ID，对我来说很好。

<ul>
 <li ng-repeat="note in notes">
   {{note.title}}
   <div ngf-select id="file{{$index}}" ng-model="files"><b>upload</b></div>
  </li>
</ul>

AngularJS ng-file-upload在ng-repeat中无法正常工作

3 个答案: