Retrieve the $scope reference within the $rootScope event handler

Within the .run segment of the primary module in my application, there is an event handler designated for the $locationChangeStart event. Its purpose is to verify the abandonment of any unsaved modifications. The setback lies in the necessity of having a connection to the $scope to carry out these inspections.

Despite my efforts to append this reference alongside the one for $rootScope, I encountered an error message that reads as follows:

Uncaught Error: Unknown provider: $scopeProvider <- $scope
.

Now, I am seeking guidance on how to navigate this issue. Your suggestions are welcome.

.run(['$rootScope', '$location', function ($rootScope, $location) {
    $rootScope.$on("$locationChangeStart", function (event, next, current) {
        if ($scope.unsavedChanges && !confirm('Unsaved changes')) {
            event.preventDefault();
        }
    });
 }

Answer №1

In the AngularJS documentation for module, it states that only instances (and not Providers) can be injected into the run blocks.

angular.module('myModule', []).
    run(function(injectables) { // instance-injector
        // This is an example of a run block.
        // You can have as many of these as you want.
        // You can only inject instances (not Providers)
        // into the run blocks
    });

Therefore, you will not be able to inject $scopeProvider into the run block.

Answer №2

Adding $scope as a parameter in your function could be done in the following way:

 .run(['$rootScope', '$location', '$scope', function ($rootScope, $location, $scope)

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