Recursive angular JS tickboxes

// Use Case:
// Get all values from API. Loop thru collection and provided control with value.

<div class="btn-group" data-toggle="buttons">
    <label ng-repeat="cover in Benefit.availableCovers track by $index" class="btn btn-default-outline large-button-switch {{ Benefit.BenefitData.benefit_cover_type_id == $index ? 'active' : null }}">
        <input
        ng-click="Benefit.BenefitData.benefit_cover_type_id = $index"
        type="checkbox"
        name="benefit-renewal"
        ng-model="Benefit.BenefitData.benefit_cover_type_id"
        value="$index"> {{ cover.name }}
    </label>
</div>