Is there a method to access all the Scopes within an AngularJS application? This would allow me to manage them at the same level and arrange them in a directive manner or order.
Alternatively, is it possible to retrieve all the Scopes of the instances of a specific directive?
If obtaining this information is not feasible, could you please clarify why that is the case or suggest potential approaches to fulfill this requirement?
$scope elements operate as interconnected lists internally. While not necessarily recommended, it is possible to utilize the private properties of scope in order to navigate through that chain starting from the $rootScope or any other desired point downward.
Here is a basic example demonstrating the creation of a <ul> using a directive to display each scope and its corresponding $id within that list, maintaining the hierarchy.
(function() {
function ShowScope($rootScope) {
function renderScope(scope, elem, level) {
var level = (level || 1);
var li = angular.element('<li>');
var p = angular.element('<p>');
p.text(scope.$id);
li.addClass('level-' + level);
li.append(p);
if (scope.$$childHead) {
var ul = angular.element('<ul>');
renderScope(scope.$$childHead, ul, level + 1);
li.append(ul);
}
if(scope.$$nextSibling){
renderScope(scope.$$nextSibling, elem, level);
}
elem.append(li);
}
return {
restrict: 'E',
link: function(scope, elem, attrs) {
scope.$watch(function() {
elem.empty();
var ul = angular.element('<ul>');
ul.addClass('list-unstyled');
renderScope($rootScope, ul);
elem.append(ul);
});
}
};
}
ShowScope.$inject = ['$rootScope'];
angular.module('scope-app', [])
.directive('showScope', ShowScope);
}());.level-1{
background-color:rgb(255, 0, 0);
}
.level-2{
background-color:rgb(200, 0, 0);
}
.level-3{
background-color:rgb(150, 0, 0);
}<script src="http://code.angularjs.org/1.3.0/angular.js"></script>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" />
<!-- -->
<div class="container" ng-app="scope-app" ng-init="nums=[1,2,3,4,5]">
<div class="row">
<div class="col-sm-12">
<show-scope></show-scope>
</div>
</div>
<div class="row">
<div class="col-sm-12">
<div ng-repeat="n1 in nums">
<p ng-repeat="n2 in nums">
{{n1}}:{{n2}}
</p>
</div>
</div>
</div>
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