角 - 射击时NG-NG模式变化不会改变 [英] Angular - ng-change not firing when ng-model is changed

问题描述

的输入是：

<input type="text" ng-model="repair.test"  ng-change="action()" />

的动作（）是，当我手动键入和改变输入执行。然而，如果我通过一些其他的功能改变repair.test值编程，它不火NG-变化的行动。我已阅读角的教程和它可能是预期的行为。

The action() is executed when I manually type and change the input. However if I change the repair.test value by some other function programmatically, it doesnt fire the ng-change's action. I have read the angular tutorial and it's probably the expected behavior.

https://docs.angularjs.org/api/ng/directive/ngChange

当值的变化是从模型来这位前pression不计算。 ＆LT; - 我需要这一点。
我如何可以触发控制器的动作，当模型以任何方式改变？ （打字输入或通过任何其它功能）

"The expression is not evaluated when the value change is coming from the model." <- I need this too. How can I fire an action in controller, when the model changes in any way? (typing in input or by any other function)

感谢您的帮助。

编辑：

该模型的价值实际上是的形式。$有效，它有它的周围（我认为）自己的表单控制器，这就是为什么我用动作功能试用传递值到父控制器。因此， $范围。$看此刻不起作用，只有当它被初始化。

The model value is actually the form.$valid, which has it's own Form controller around it (I think), that is why I used the action function to try to pass the value to the parent controller. So $scope.$watch at the moment doesn't work, only when it is initialised.

推荐答案

ngChange仅仅是输入，如果你要听的模式做这样的

ngChange is just for the input, if you want to listen the model do like this

$scope.$watch('repair.test', function(newvalue,oldvalue) {

            });

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