模型更改时不会更新角度视图(DOM 元素) [英] Angular view (DOM elements) not being updated when model changes

问题描述

在最新的稳定版 Chrome 中运行最新的稳定版 Angular.我在带有 ng 控制器 A 的视图内的 DOM 元素上进行了 ng-click，但 DOM 元素本身有一个 ng-controller 设置为 another 控制器，B.ng-click 在控制器 B 内触发，但是 DOM 元素通过其 ng-model 属性绑定到的范围属性的更改不会反映出来.

Running latest stable version of Angular in latest stable Chrome. I have an ng-click on a DOM element that's inside a view with ng controller A, but the DOM element itself has an ng-controller set to another controller, B. ng-click fires inside controller B, however changes to scope properties, which DOM element is bound to by its ng-model attribute, are not reflected.

特别是我有一个 textarea 以及其他 HTML5 输入类型.没有错误，当我中断调试器时，我可以查看范围变量并看到 $scope 实际上指向控制器 B.

Specifically I have a textarea, as well as other HTML5 input types. No errors, and when I break in the debugger, I can look at the scope variable and see that $scope is in fact pointing to controller B.

Plnkr 示例在这里，注意它如何只更新同一 DIV 内的输入?:http://plnkr.co/edit/DmccNj?p=preview

Plnkr example here, notice how it only updates the input that's inside the same DIV?: http://plnkr.co/edit/DmccNj?p=preview

推荐答案

我最近遇到了同样的问题.显然，当您使用相同的 ng-controller 创建两个 HTML 片段时，它会创建控制器的两个单独实例.因此，点击编辑"按钮会在实例 1 中设置 $scope.comment，但输入字段绑定到控制器的实例 2.

I had the same issue just recently. Apparently, when you create two HTML fragments with the same ng-controller, it creates two separate instances of the controller. So, hitting the 'EDIT' button sets $scope.comment in instance 1, but the input field is bound to instance 2 of the controller.

如果必须这样做，最好创建一个 Angular 服务，因为它们是单例的.

If you must do it this way, you're best of creating an angular service, as they are singletons.

这是我的问题:拆分 HTML一个控制器的组件导致控制器停止工作

此外，Angular Batarang 是一款非常酷的 Chrome来自 AngularJS 团队的扩展，用于调试 Angular 应用程序.我提到这一点是因为如果你(或我)使用了它，我们会立即看到问题所在.

Also, Angular Batarang is a very cool Chrome extension from the AngularJS team to debug Angular applications. I mention this because if you (or I) had used this, we would have instantly seen what was going wrong.

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