Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript AngularJS Extending Inputs Extending Inputs: Optional require

Posted by Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points

I can't figure this out. Can someone please help me?

Challenge: Add a link function that takes four parameters: $scope, $element, $attrs, and ngModelCtrl. You don't need to add any statements in the function body yet.

app.js 
angular.module('treehouseCourse', [])
  .directive('sometimesTwoWay', function() {
    return {
      require: '?ngModel'

    }
  });
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>
Gabriel D. Celery
Gabriel D. Celery
13,810 Points

Isn't it simply asking you to do add this code to the app.js?

function link ($scope, $element, $attrs, ngModelCtrl) {};

3 Answers

Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points
Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points

That's what I thought, but it won't pass.

I have no idea what I'm doing wrong.

Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points
Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points

I figured it out!

Gabriel D. Celery
Gabriel D. Celery
13,810 Points

What was the problem? :)

Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points
Ja'Nel Johnson
Ja'Nel Johnson
10,314 Points

I forgot ''. lol