Maximizing the potential of AngularJS directives while maintaining a seamless connection to the controller

Is there a way to maintain the connection with the current controller when wrapping data with a directive?

I am facing an issue where the directive within the wrapped template loses connection with the outside controller, making it impossible to execute functions.

Custom Wrapping Directive:

myApp.directive('wrapContent', function() {
    return {
        restrict: "E",
        scope: {
            model:                      "=",
            datas:                      "="
        },
        templateUrl: "./any/template.php",
        link: function(scope, element, attr) {
            // implementation
        }
    };
});

Directive Inside Wrapped Template:

myApp.directive('doAction', function() {
    return {
        restrict: "A",
        link: function(scope, elem, attrs) {
            $(elem).click(function(e) {
                scope.$apply(attrs.doAction);
            });
        }
    }
});

Controller:

lmsApp.controller('OutsideController', function ($scope){
    $sope.sayHello = function() {
        alert("hello");
     };
});

HTML snippet where I want to trigger the function (template.php):

<div>
     <do-action="sayHello()"></do-action>
</div>

How I call the wrapContent directive which is located outside (Updated):

<div ng-controller="OutsideController">
        <wrap-content model="any" datas="data_any"></wrap-content>
</div>

What is the solution to executing the sayHello() function?

Your assistance is greatly appreciated. Thank you for all responses!

Answer №1

The wrapContent directive's actions will be handled within the controller's scope. The DoAction directive's actions will be handled within the isolateScope of the wrapContent directive.

One way to solve this: Access the sayHello function in wrapContent using '&' and call it in an event handler.

Another solution: Instead of referencing scope in your event handler, reference scope.$parent.

Answer №2

Make sure to pass the sayHallo function to your parent directive using &

myApp.directive('wrapContent', function() {
    return {
        restrict: "E",
        scope: {
            model:                      "=",
            datas:                      "=",
            sayHallo: "&"
        },
        templateUrl: "./any/template.php",
        link: function(scope, element, attr) {
            // Any logic here
        }
    };
});

Include in HTML

<div ng-controller="OutsideController">
        <wrap-content model="any" datas="data_any" sayHallo="sayHallo()"></wrap-content>
</div>

In your child directive, you can simply call sayHallo from your scope like this:

myApp.directive('doAction', function() {
    return {
        restrict: "A",
        link: function(scope, elem, attrs) {
             scope.sayHallo();
        }
    }
});

You don't need to pass it again. Your child directive should look something like this:

<div>
     <do-action></do-action>
</div>

UPDATE

If you want to access all parent model functions without passing each one individually, use scope.model in your child directive to access model attributes and functions.

myApp.directive('doAction', function() {
    return {
        restrict: "A",
        link: function(scope, elem, attrs) {
             scope.model.sayHallo();
        }
    }
});

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