javascript - Adding a function to the scope of an Angular custom directive -

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i have following angular directive. 

// component panel app.directive('component', function () {        return {     restrict: 'ae',      scope: {          heading: '@heading',         componenttype: '@componenttype'           getcomponenturl: function() {          var componentpath = "./shell/partials/components/" + componenttype + ".html";         return componentpath;      } },       template: '\     <div id="panel" class="panel panel-primary panel-component fill scrollable">\         <div class="panel-heading">\             <div class="row">\                 <div class="col-sm-6">\                     <h2 class="panel-title">{{heading}}</h2>\                 </div>\                 <div class="col-sm-6">\                     <button type="button" class="btn btn-default pull-right btn-expand" data-toggle="tooltip" data-placement="left" title="go fullscreen" ng-click="">\                     <i class="fa fa-expand"></i></button>\                 </div>\             </div>\         </div>\          <div class="panel-body fill">\              <!-- include used here different component types may have different attributes\             includes placed here , directives used within includes.\             -->\              <div ng-include="getcomponenturl()"> </div>\          </div>\     </div>\     ',      link: function(scope, elm, attrs) {       } } });

as can see use following in directive's scope:

getcomponenturl: function() { ... }

this doesn't seem work.

i trying supply ng-include predefined string. appreciate there other ways wondered angular have means of putting methods scope of directive?

many thanks, kiran

try

app.directive('component', function () {        return {     restrict: 'ae',     link : function(scope){        scope.getcomponenturl = function() {          var componentpath = "./shell/partials/components/" + componenttype + ".html";         return componentpath;      }     },     scope: {          heading: '@heading',         componenttype: '@componenttype'    },

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