How to properly declare an explicit injector when using the resolve parameter in $routeProvider?

$routeProvider resolve feature in AngularJS allows for injecting additional dependencies to the controller function. How can we combine this with explicit dependency injection declaration?

Example:

angular.module('myModule', [])
    .config(function($routeProvider) {
        $routeProvider.
            when('/tabOne', { templateUrl : 'tabOne.html', controller: TabOne, 
                resolve: {
                  someDependency: SomeDependency.factoryFunction
                }
     });
            
});

Then:

TabOne.$inject = [ '$scope', 'someFirstService', 'someOtherService' ];

In the example above, two services are injected into the TabOne controller (someFirstService and someOtherService). However, I want the route to change only after someDependency has been resolved and injected into TabOne as well. If I simply add someDependency to the Controller function's arguments list, it will result in a DI error.

Any suggestions on how to achieve this?

Answer №1

Initially, consider if your controller should simply wait for the dependency to be resolved before it is called, or if it actually requires the resolved value of SomeDependency.factoryFunction.

It appears that you are looking for the latter option: you need the resolved value.

In such a scenario, one method that could be effective is to have two separate controllers for TabOne.

angular.module('myUniqueModule', [])
    .config(function($routeProvider) {
        $routeProvider.
            when('/tabOne', { templateUrl : 'uniqueTabOne.html', controller: UniqueTabOneRouted, 
                resolve: {
                  someDependency: SomeDependency.factoryFunction
                }
     });

});

function UniqueTabOne($scope, someFirstService, someOtherService) {
  ... unique code goes here ...
}

function UniqueTabOneRouted($scope, someFirstService, someOtherService, someDependency) {
    UniqueTabOne($scope, someFirstService, someOtherService);
    ... specific code related to someDependency is handled here ...
  }

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