Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript AngularJS Extending Inputs Extending Inputs: Optional require

Add a link function that takes four parameters: $scope, $element, $attrs, and ngModelCtrl.

I am not understanding why this is breaking part one and why this code is not working.

app.js
angular.module('treehouseCourse', [])
  .directive('sometimesTwoWay', function() {
    return {
      // YOUR CODE HERE
      require: '?ngModel',
       link: function ($scope, $element, $attrs, ngModelCtrl)
    }
  });
index.html
<!DOCTYPE html>
<html ng-app="treehouseCourse">
<head>
  <title>Angular.js</title>
  <script src="js/angular.js"></script>
  <script src="app.js"></script>
</head>
<body>

  <sometimes-two-way ng-model="course.description"></sometimes-two-way>

</body>
</html>

1 Answer

I used this code and it worked fine. The only difference I see in yours is there is a space between function and the parameter. Also you are missing one of the brackets in the link function.

angular.module('treehouseCourse', [])
  .directive('sometimesTwoWay', function() {
    return {
      // YOUR CODE HERE
      require: '?ngModel',        
      link: function($scope, $element, $attrs, ngModelCtrl){
      }


    }
  });