{{::bindOnce}}

example.js

'use strict';

module.exports = function(ngModule) {
	ngModule.directive('myDirective', [function() {

		var elementId = 0;

		return {
			restrict: 'E',
			scope: {
				data: '='
			},
			template: '<div id="{{::uniqueId}}"></div>',
			replace: true,
			link: function(scope, element, attrs) {
				scope.uniqueId = 'unique-element-' + elementId++;

				// Once the DOM is ready...
				element.ready(function() {
				  somethingThatRequiresAnElementId(scope.uniqueId);
				}
			}
		};
	}]);
};