Ionic 三級目錄乃至多級目錄隱藏tabs

.directive('hideTabs', function($rootScope) {
    return {
        restrict: 'A',
        link: function($scope, element, attributes) {
            $scope.$on('$ionicView.beforeEnter', function() {
                $scope.$watch(attributes.hideTabs, function(value){
                    $rootScope.hideTabs = 'tabs-item-hide';
                });
            });
            $scope.$on('$ionicView.beforeLeave', function() {
                $scope.$watch(attributes.hideTabs, function(value){
                    $rootScope.hideTabs = 'tabs-item-hide';
                });
                $scope.$watch('$destroy',function(){
                    $rootScope.hideTabs = false;
                })
            });
        }
    };
})