AngularJS：从具有隔离范围的指令调用控制器函数

Question

我有以下问题。我想从具有隔离范围的指令调用控制器函数。

HTML：

<div ng-controller="MainController">
   <test></test>
</div>

JS：

var app = angular.module("app", []);

app.controller("MainController", function ($scope) {
    $scope.testFunction = function () {
        console.log("You just call testFunction()!");
    };
});

app.directive("test", function () {
    return {
        restrict: "E",
        scope: {},
        template: "<h1 ng-click='testFunction()'>Hello world!</h1>"
    };
});

当指令没有隔离范围时，调用函数如下。

Working DEMO

Answer 1

您可以使用&传递要调用的函数，如

var app = angular.module("app", []);

app.controller("MainController", function($scope) {
  $scope.counter = 0;
  $scope.testFunction = function() {
    $scope.counter++;
  };
});

app.directive("test", function() {
  return {
    restrict: "E",
    scope: {
      myfn: '&myfn'
    },
    template: "<h1 ng-click='myfn()'>Hello world!</h1>"
  };
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="MainController">
  <test myfn="testFunction()"></test>
  <span>{{counter}}</span>
</div>