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

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

Angular添加了 ng-valid ， ng-invalid ， ng-dirty ， ng-pristine

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.

在Dart代码中是否有这些状态的方法？

Is there a way to these status in Dart code?

推荐答案

好的，所以我刚刚看过这个：

Okay so I have just looked in to this:

！）：

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

然后下面的指令/ controller / component：

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);
    });
  }
}

这将输出模型是否有效。

This will output whether the model is valid or not.

查看NgModel的其他文档：
http://ci.angularjs.org/view/Dart/job/angular.dart-master/javadoc/angular.directive/NgModel .html

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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