AngularJS: Use directive elements in Controller

angularjs

Solution

I think you shouldn't rely on events, but add a `controller` property to the directive object and declare the directive's controller there. Something similar to this (haven't tested it):

.directive('page', function () {
    return {
        restrict: "E",
        transclude: true,
        template: '<div ng-transclude></div>',
        controller: function ($scope, $element, $attrs, $transclude, otherInjectables) {
            // Add ng-click="goToPage(n)" directives on your HTML. Those should be inside of the <page> element for this to work.
            $scope.goToPage = function (page) {
                if (page === 1) {
                    window.scrollTo(100, $element[0].offsetTop - 110);
                }
                else {
                    window.scrollTo(0, $element[0].offsetTop - 60);
                }
        },
    }
});

For more information, consult the AngularJS documentation on directives.

Problem

I'm making a pagination app where the user can switch trough pages in the same window (pages get displayed beneath each other). Whenever someone changes the page, I want the window to scroll the right page This is my page directive: ``` .directive('page', function () { return { restrict: "E", transclude: true, template: '<div ng-transclude></div>', link: function(scope, element, attrs) { /* * Better in controller, now the function has to be evaluated for every directive. * */ scope.$on('pageChanged', function(event, page) { if (parseInt(attrs.number) === page) { if (page === 1) { window.scrollTo(100, element[0].offsetTop - 110); } else { window.scrollTo(0, element[0].offsetTop - 60); } } }); } } ``` This works but now every directive listens to the pageChanged event and acts accordingly. I would prefer to only listen in the controller and let the controller scroll the window to the right page. (this way only one function has to be evaluated). ``` $scope.$on('pageChanged', function (event, pageNr) { $scope.currentPage = pageNr; /* * Scroll to the right page directive here **/ }); ``` To do this however I need to have access to the pages elements in the controller, is there a way to do this? I was also looking for a method that could change the currentPage to the right page when the user scrolls the window.

Original source