$location from $exceptionHandler – dependency conflict

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

I’m trying to implement a very standard task: when an exception occurs, redirect to my /error page.

In a simplified form the code looks like this:

app.factory('$exceptionHandler', ['$location', function($location) {
    return function(exception, cause) {
        $location.path("/error");
    };
}]);

However, AngularJS complains:
Circular dependency found: $location <- $exceptionHandler <- $rootScope

This looks like a fundamental limitation, not to allow use of $location when handling exceptions.

But how else can we do it then?

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

To get around this you need to call the $injector manually to resolve the dependency at runtime:

app.factory('$exceptionHandler', ['$injector', function($injector) {

    var $location;

    return function(exception, cause) {
        $location = $location || $injector.get('$location');
        $location.path("/error");
    };
}]);

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

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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