How to modify scope from within a directive in AngularJs

Question

I need to modify a root scope attribute from within a callback inside a directive. But the directive is in a inner scope created by a switch directive.

HTML

Answer 1

I updated the fiddle, basically had to go to the parent to get the right "selected" variable, also used the isolate scope = to get two way binding between the value passed in and the internal model.

http://jsfiddle.net/nJ7FQ/2/

angular.module('app', [])

    .directive("customTag", [function () {
    return {
        restrict: "E",
        replace: true,
        template: "",
        scope: {model:'='},

        link: function (scope, element, attrs) {
            element.bind('click', function () {
                scope.model[attrs.selectedItem] = "New value";
                scope.$apply();
            });
        }
    };
}]);

function AppController($scope) {
    $scope.selected = 'Old value';
}

and the HTML

    
Selected: {{ selected }}
    

        

            
Item: {{ selected }}
            
        
        

            
Worked
        
    

Updated the fiddle to use your original reading of the property from the attribute: http://jsfiddle.net/nJ7FQ/4/