Can A Directive Delete Itself From A Parent Scope
Solution 1:
according to New Dev in a previous comment, this is the way:
var app = angular.module('app', [])
.directive('customDirective', function($log) {
return {
restrict: 'EA',
template: '<a href="" ng-click="onRemove()">remove me {{model.n}}</a>',
scope: {
model:"=",
onRemove:"&"
}
}
})
.run(function($rootScope) {
$rootScope.instances = [{n:1},{n:2},{n:3},{n:4}];
});<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<div ng-repeat="i in instances">
<custom-directive model="i" on-remove="instances.splice($index,1)">
</custom-directive>
</div>
</div>Solution 2:
First, don't use ngModel as a DOM attribute. This is an AngularJS directive used to bind form inputs to scope variables.
I've renamed it to model and added an extra attribute called index.
<div ng-app="app" ng-controller="controller">
<div ng-repeat="instance in instances>
<customDirective model="instance" index="$index"></customDirective>
</div>
</div>
Now in your controller you can listen for events (such as a custom event you might title removeCustom) emitted by children using $scope.$on().
app.controller('controller',function($scope) {
$scope.instances = [.....];
$scope.$on('removeCustom',function($index) {
delete $scope.instances[$index];
});
});
Then in your custom directive you have to use $scope.$emit() to broadcast your removeCustom event up the scope hierarchy to the controller.
app.directive('customDirective', function($log) {
return {
restrict: 'E',
templateUrl: './template.htm',
scope: {
model:"=",
index:"="
},
link: function($scope,$el,$attr) {
// when you need to remove this
$scope.$emit('removeCustom',$scope.index);
}
});
FYI: A directive can always remove itself by calling $el.remove() in the link function, but since your directive is created via a ngRepeat it will just get recreated in the next digest. So you have to tell the controller to remove it from the instances array.
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