Slider.js

angular.module('silviaModule.Slider', ['ngSanitize'])
    .directive('svSlider', function() {
        return {
            restrict: 'E',
            scope: {
              'ngModel': '='
            },
            template: '<div ng-bind-html="slide"></div>',
            controller: function($scope, $sce) {
              $scope.$watch('ngModel', function(newVal) {
                if(newVal) {
                    var slide = newVal.html();
                    slide = "<slide>" + slide + "</slide>";
                    $scope.slide = $sce.trustAsHtml(slide);
                }
              })
            }
        }
    });