如何在没有表单和指令的情况下从控制器内部访问 $ngModelController [英] How to access the $ngModelController from inside the Controller without a Form and without a Directive

问题描述

也许这是一个菜鸟的错误，但我似乎无法访问 $scope.model 的 $ngModelController 所以我可以获取 $viewValue 来自它.

Maybe it's a rookie mistake, but I can't seem to access the $scope.model's $ngModelController so I can grab the $viewValue from it.

我有一个没有表单的输入(我使用 ui-mask 指令):

I have an input without a form (im using ui-mask directive):

<input type="text" ng-model="inicio" name="inicio" ui-mask="99/99/9999">

// inside my controller
$scope.inicio = dateFilter((new Date).getTime(), 'dd/MM/yyyy');

ui-mask 将 $modelValue 设置为与 $viewValue 不同的值，从而难以将格式化数据发送到服务器.当 $scope.inicio 模型更改时，该值是一个没有斜线的日期，例如 01012014.所以我需要能够获得该输入的控制器，但不必将其包装在表单中，并且必须使用 $scope.myForm.inicio.$viewValue.一定有可能...

ui-mask set the $modelValue a different value than $viewValue, making it hard to send formatted data to the server. When the $scope.inicio model changes, the value is a date without slashes, like 01012014. So I need to be able to get the controller for that input, but without having to wrap it in a form, and have to use $scope.myForm.inicio.$viewValue. It MUST be possible...

我知道我可以做的事情，但看起来很笨拙，必须有一个更简单的方法:

Things I know I can do, but seems hacky, there must be a simpler way:

• 将元素放入表单中并通过 $scope.myForm.input.$viewValue
访问它
• 使用 jQuery 获取元素数据 $('input[name="inicio"]').data('$ngModelController');
• 使用angular.element('input[name="inicio"]').controller('ngModel');
获取元素
• 创建一个指令，将其放入输入中，并用它更新我的范围模型

app.directive('viewValue', function(){
  return {
    priority: 10,
    require: 'ngModel',
    link: function(scope, element, attrs, controller){
      scope.$watch(attrs.viewValue, function(newValue, oldValue){
        if (newValue !== oldValue){
          scope[attrs.viewValue] = controller.$viewValue;
        }
      });
    }
  }
});

<input type="text" ui-mask="99/99/9999" ng-model="inicio" view-value="inicio">

推荐答案

我喜欢指令替代方案.本质上 ui-mask 指令没有做你想要的，所以你最好编写自己的指令.

I like the directive alternative. Essentially the ui-mask directive isn't doing what you want, so you might as well write your own directive.

您不必将 inicio 传递给您的 view-value 指令.相反，将您自己的解析器添加到 ngModelCtrl.$parsers.下面是一个例子:https://stackoverflow.com/a/15556249/215945

You shouldn't have to pass inicio to your view-value directive. Instead, add your own parser to ngModelCtrl.$parsers. Here's an example: https://stackoverflow.com/a/15556249/215945

这篇关于如何在没有表单和指令的情况下从控制器内部访问 $ngModelController的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！