I'm having a problem with $broadcast in angularJS. My controller is dynamically adding directive elements to the DOM on page load using the $compile function.
$('#container').prepend($compile('<myDirective></myDirective>')($scope));
$scope.$broadcast('loadIt', stuffIneedLoaded);
What I want to do is to call a directive scope function upon the directive being created and so I used $broadcast. What is happening now is that the $broadcast is called before the directive is done rendering and so the scope.$on in the directive never hears the broadcast.
From the directive link function:
link: function (scope, element, attrs) {
scope.$on('loadIt') = function (stuffToLoad) {
//stuff to load
}
}
The reason I need to use broadcast is because I need to send the directive data from the controller.
The fiddle doesn't work, just boilerplate to help convey what I'm shooting for:
Any ideas? Thank you all in advance!
I would use two directives and call one from another. Further, after compile would call scope method that invokes broadcast. Something like:
var fessmodule = angular.module('myModule', []);
fessmodule.controller('fessCntrl', function ($scope) {
$scope.recall = function() {
$scope.$broadcast('loadIt');
};
});
fessmodule.$inject = ['$scope'];
fessmodule.directive("myDirective", function() {
return {
restrict: 'E',
template: "<div>test code</div>",
link: function (scope, element, attrs) {
scope.$on("loadIt", function() {
console.log('in myDirective on');
});
}
}
});
fessmodule.directive('directiveFoo', function($compile) {
return {
controller: function() {
console.log('in foo ctrl');
},
link: function (scope, element, attrs) {
var elem_0 = angular.element(element[0]);
var a_input = angular.element($compile('<my-directive></my-directive>')(scope));
elem_0.prepend(a_input);
scope.recall();
}
}
});
Demo Fiddle
as a side note:
I strongly recommend to avoid any DOM update/manipulations in controller. Use directives. By this way we can control and track down most issues with call queue.
This is old, but today I solved something similar this way:
module.controller('moduleCtrl', function ($scope, $interval) {
$scope.triggerEvent = function() {
var promise =
$interval(function () {
if (scope.$$listenerCount["loadIt"] == null
|| scope.$$listenerCount["loadIt"] === 0)
return;
scope.$broadcast("loadIt");
$interval.cancel(promise);
}, 200);
};
});
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