Tips for transferring information from the isolate scope to the parent scope

As a newcomer to AngularJS, I am exploring the creation of directives and how to invoke functions from the parent scope within them. While I have successfully achieved this, I am now grappling with the challenge of passing data from the isolate scope via an expression to the parent scope. The explanation provided in the Angular Developer guide has left me a bit perplexed.

Here is an example of the directive:

app.directive('myDir', function() {
    return {
        restrict: 'E',
        template: '<div ng-click="parentFunc(someValue)"><div>', 
        scope: {
           parentProp: '=property',
           parentFunc: '&func'
        },
        link: function(scope, element, attrs) {

        }
    }
});

The corresponding markup looks like this:

<my-dir prop="foo" func="bar(someValue)"></my-dir>

And here's how it would be handled in the controller:

app.controller('TstCtrl', function($scope) {
    $scope.foo = 'test';
    $scope.bar = function(value) {
       console.log(value);
    };
});

Your insights and assistance on this matter are greatly appreciated!

Answer №1

To accomplish this task, consider taking a look at this example where an object is passed to the function using matching parameter names from your func attribute.

    link: function(scope, element, attrs) {
        scope.customFunction({data:'example'});            
    }

In this scenario, because you invoked bar(data) in your func attribute, make sure to pass an object with data into your link function. The method customFunction is utilized since it's connected to &func within your isolated scope.

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