angular.module('yourModule').directive('bindIf', function() {        return {             restrict: 'A',            require: 'ngModel',             link: function(scope, element, attrs, ngModel) {                             function parser(value) {                                 var show = scope.$eval(attrs.bindIf);                    return show ? value: '';                 }                 ngModel.$parsers.push(parser);             }         };     });