使用 $mdDialog.show() 将范围项返回到父范围

Question

哟！我有一个控制器，它的$scope 上有一堆物品。范围项之一$scope.openDialog 通过$mdDialog.show() 打开$mdDialog。传递给$mdDialog.show 的对象有一个模板，其中包含通过ng-file-upload 项目上传文件的控件，您可以阅读有关here 的信息。

如果在对话框窗口中上传的项目在退出对话框窗口后在主控制器中可用，我希望它。我不确定对话框窗口的控制器是否应该引用主 myCtrl 控制器或使用它自己的控制器，以及如何将上传的文件提供给 myCtrl。

这里是角码：

angular.module('app', ['ngMaterial', 'ngFileUpload'])
.controller('myCtrl', ['$scope', '$mdDialog', 'Upload', function($scope, $mdDialog, Upload) {
  var tmpl = "<md-dialog>\n" +
    "<md-dialog-content>\n" +
    "    <input type=\"text\" ng-model=\"username\"></br></br>\n" +
    "    <input type=\"checkbox\" ng-model=\"multiple\">upload multiple file</br></br>\n" +
    "    watching model:\n" +
    "    <div class=\"button\" ngf-select ng-model=\"files\" ngf-multiple=\"multiple\">Select File</div>\n" +
    "    on file change:\n" +
    "    <div class=\"button\" ngf-select ngf-change=\"upload($files)\" ngf-multiple=\"multiple\">Select File</div>\n" +
    "    Drop File:\n" +
    "    <div ngf-drop ngf-select ng-model=\"files\" class=\"drop-box\" \n" +
    "        ngf-drag-over-class=\"dragover\" ngf-multiple=\"true\" ngf-allow-dir=\"true\"\n" +
    "        accept=\"image/*,application/pdf\">Drop pdfs or images here or click to upload</div>\n" +
    "    <div ngf-no-file-drop>File Drag/Drop is not supported for this browser</div>\n" +
    "    Image thumbnail: <img ngf-src=\"files[0]\">\n" +
    "    Files:\n" +
    "    <ul>\n" +
    "        <li ng-repeat=\"f in files\" style=\"font:smaller\">{{f.name}}</li>\n" +
    "    </ul>\n" +
    "    Upload Log:\n" +
    "    <pre>{{log}}</pre>\n" +
    "<md-action><div class=\"button\" ng-click=\"close()\">close!</div></md-action>\n" +
    "<md-action><div class=\"button\" ng-click=\"upload()\">upload!</div></md-action>\n" +
    "</md-dialog-content>\n" +
    "</md-dialog>";
$scope.files = ['files should appear here', 'files 1', 'file2'];
$scope.openDialog = function () {
  $mdDialog.show({
        parent: angular.element(document.body),
        template: tmpl,
        controller: 'myCtrl'
    });
};
$scope.close = function() {
  $mdDialog.hide();
};
$scope.$watch('files', function () {
    $scope.upload($scope.files);
});
$scope.upload = function (files) {
        if (files && files.length) {
            for (var i = 0; i < files.length; i++) {
                var file = files[i];
                Upload.upload({
                    url: 'upload/url',
                    fields: {'username': $scope.username},
                    file: file
                }).progress(function (evt) {
                    var progressPercentage = parseInt(100.0 * evt.loaded / evt.total);
                    console.log('progress: ' + progressPercentage + '% ' + evt.config.file.name);
                }).success(function (data, status, headers, config) {
                    console.log('file ' + config.file.name + 'uploaded. Response: ' + data);
                });
            }
        }
    };
}]); 

顺便说一句：我经常听到不应该将应用程序逻辑传递给控制器​​。在这种情况下，如果 $scope.upload 引用了 $scope 并且 $scope 在工厂中不可用，您将如何将其移动到工厂中？

感谢您的帮助。

Plnkr：http://plnkr.co/edit/e2MYdEABhj34ahtPTO0g?p=preview

Answer 1

您可以将控制器的 $scope 传递给您的 $mdDialog，如下例所示

$mdDialog.show({
    parent: angular.element(document.body),
    template: tmpl,
    scope: $scope,
    controller: 'myCtrl'
});

检查 plunkr：http://plnkr.co/edit/0hFWEyWdetTXcPLPkbmQ?p=preview

要将应用程序逻辑移动到工厂，您将执行类似的操作

$scope.upload = factory.upload(files,$scope.username); 

工厂会有方法

 factory.upload = function(files,username)
 {
  function (files) {
    if (files && files.length) {
        for (var i = 0; i < files.length; i++) {
            var file = files[i];
            Upload.upload({
                url: 'upload/url',
                fields: {'username': username},
                file: file
            }).progress(function (evt) {
                var progressPercentage = parseInt(100.0 * evt.loaded / evt.total);
                console.log('progress: ' + progressPercentage + '% ' + evt.config.file.name);
            }).success(function (data, status, headers, config) {
                console.log('file ' + config.file.name + 'uploaded. Response: ' + data);
            });
        }
    }
};

Answer 2

在 $mdDialog.show() 中设置scope: $scope 会将范围带入模态，preserveScope: true 应该将新添加的元素保留在 $scope 中，否则之后会删除它们？

$mdDialog.show({
  template: tmpl,
  scope: $scope,
  preserveScope: true,
  controller: 'myCtrl'
});