指令中的指令-手表不起作用

Question

Spend many hours, tried almost everything , but it doesn`t work ..

I have Angular directive witch call another angular directive .. I need to handle event in child directive. So my child directive look like :

           restrict: 'E',
           replace: true,
           scope: {
               testResult: "=",

And in parent directive i have :

<my-search-directive test-result="newTest"></my-search-directive>

To handle changes in testResult , in parent directive i have this watch :

  $scope.$watch('newTest', function (newVal, oldVal) {
      alert('test ' + newVal + ' ' + oldVal);
  }, true);

It fires only one time in the beginning and newVal and oldVal are undefined.. If i have service instead of 'master' directive it works (i`m passing parentScope and use it for watch)

In the beggining newTest was return complex object and i thing that could be the problem , but it`s not ,because it now work with simple string also.

Try to use watchcollection , but it not working also .. I need exactly this scenario , directive that use directive and i can figure it out how can it works ?

EDIT 1 :

myApp.directive('parentDirective', [
    "$log", function ($log) {

        return {
            scope: {
                getQueriesUrl: "=",
                isFullyQualified: "=",
                isMainTabs: "=",
                model: "=",
                crudUrls: "=",
                callBackFunction: "&",
                callback: "&",
                newTestResult: "@"
            },
            restrict: 'A',
            replace: true,
            controller: function ($scope) 
{
myActions.push('<div><my-search-directive test-result="newTestResult"></my-search-directive></div>');
}

That is my 'parent directive' , so i need to track changes of test-result. As @Walfrat mantion , i added newTestResult variable , but still doesn`t work ..

Answer 1

First of all you re not using directive in directive.

You're using a directive with 2 way binding here.

Since your scope is binded to data you should watch testResult as defined in your scope{} block. If $watch not working try watchCollection on it and you should be fine.