使用分离的范围从内指令$看ngModel [英] $watch ngModel from inside directive using isolate scope

问题描述

我想从我的链接函数内部看我的模型值。

I am trying to watch my model value from inside my linking function.

scope.$watch(attrs.ngModel, function() {
       console.log("Changed"); 
    });

当我改变我的控制器内的模型值中，$手表的功能不会被触发。

When I change the model value inside my controller, the $watch function is not triggered.

$scope.myModel = "ACT";

$timeout(function() {
   $scope.myModel = "TOTALS"; 
}, 2000);

小提琴： http://jsfiddle.net/dkrotts/BtrZH/4/

我是什么在这里失踪？

推荐答案

的问题是，你 $观看 ING attrs.ngModel 这等于基于myModel。你不必基于myModel在你的范围内绑定。你想 $观看模式。这就是在您的指令范围的约束。请参见 http://jsfiddle.net/BtrZH/5/

The problem is that you $watching attrs.ngModel which is equal to "myModel". You do not have "myModel" bound in your scope. You want to $watch "model". That is what is bound in the scope of your directive. See http://jsfiddle.net/BtrZH/5/

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