Angularjs Controller destructor

All we need is an easy explanation of the problem, so here it is.

I have an AngularJs app. I use Controllers for some child scopes. In every Controller I can set a number of variables that belong to the corresponding Child Scope. When AngularJs instantiate a controller, there is a constructor where I can set a default value to my child-scope variables.

Do I have a controller “destructor”? How do I know when a controller is closing and the scope is being cleaned (destroyed by the $destroy function)?

Thanks!

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

You have to listen to the $destroy event, e.g.:

function MyController($scope, ...) {
    ...
    $scope.$on("$destroy", function handler() {
        // destruction code here
    });
}

Relevant docs: https://docs.angularjs.org/api/ng/type/$rootScope.Scope

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

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