Navigating a controller variable to access a property of a service

I've been struggling to access a property of a service through a bound controller variable in a template.

Controller:

app.controller('VictoryController', function($scope, AlertStatisticsService) {
    $scope.AlertStats = AlertStatisticsService;
});

The Service returns an object structured like this:

factory = {
    factionWins = {
        vs: 123,
        nc: 123,
        tr: 123
    }
}

The template is rendered as part of an Attribute directive:

app.directive('homeVictoryCard', function() {
    return {
        restrict: 'A',
        replace: true,
        scope : {
            empire: '@',
        },
        templateUrl: 'views/home/partials/victory.card.html'
    };
});

This is called by the following HTML element:

<div home-victory-card empire="vs"></div>

In the template, I'm trying to access the object data using the empire variable that is in the template's scope, like so:

{{ AlertStats.factionWins[empire] }}

I'm also attempting to use it in various ng-hide and ng-show directives, such as:

ng-hide="AlertStats.factionWins[empire] > 0"

Previously in Twig, I would use

attribute(AlertStats.factionWins, empire)
to get the information. However, I am uncertain how to do this in Angular, and my Google searches haven't provided any helpful results.

Thank you for your help!

Answer №1

When a directive has an isolated scope, it does not inherit the scope from its parent controller. This means that AlertStats is not available in the directive scope.

To solve this issue, you can either inject the factory into the directive or pass another scope variable as an attribute to the directive.

Here is an example of injecting the factory:

app.directive('homeVictoryCard', function(AlertStatisticsService) {
    return {
        restrict: 'A',
        replace: true,
        scope : {
            empire: '@',
        },
        templateUrl: 'views/home/partials/victory.card.html',
        link:function(scope){
           scope.AlertStats = AlertStatisticsService
        }
    };
});

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