在 Dart 代码中获取 ng-model 验证状态 [英] Get ng-model validation status in Dart code

问题描述

当我使用

Angular 添加了几个类，如 ng-valid、ng-invalid、ng-dirty、ng-pristine> 到允许显示有关验证结果的可视指示符的元素.

有没有办法在 Dart 代码中获得这些状态?

解决方案

好的，所以我刚刚查看了这个:

采用以下代码(形式和名称很重要！):

<表单名称="myForm"><input type='text' name="myInput" maxlength='25' required ng-model='ctrl.inputValue'></表单>

然后是以下指令/控制器/组件:

@NgController (选择器:[测试]"，发布为:ctrl")类测试控制器{字符串输入值；范围thisScope；测试控制器(范围 this.thisScope){thisScope.$watch("ctrl.inputValue", () {NgModel inputModel = thisScope["myForm"]["myInput"];打印(输入模型.无效)；});}}

这将输出模型是否有效.

在此处查看其他领域的 NgModel 文档:http://ci.angularjs.org/view/Dart/job/angular.dart-master/javadoc/angular.directive/NgModel.html

When I use

<input type='text' maxlength='25' required ng-model='ctrl.inputValue'>

Angular adds several classes like ng-valid, ng-invalid, ng-dirty, ng-pristine to the element that allow showing visual indicators about the validation result.

Is there a way to these status in Dart code?

解决方案

Okay so I have just looked in to this:

Take the following code (Form and names are important!):

<div test>
    <form name="myForm">
         <input type='text' name="myInput" maxlength='25' required ng-model='ctrl.inputValue'>
    </form>
</div>

Then the following directive/controller/component:

@NgController (
selector: "[test]",
publishAs: "ctrl"
)
class TestController {
  String inputValue;
  Scope thisScope;
  TestController (Scope this.thisScope) {
    thisScope.$watch("ctrl.inputValue", () { 
      NgModel inputModel = thisScope["myForm"]["myInput"];
      print(inputModel.invalid);
    });
  }
}

This will output whether the model is valid or not.

View documentation for NgModel here for other fields: http://ci.angularjs.org/view/Dart/job/angular.dart-master/javadoc/angular.directive/NgModel.html

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