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JavaScript AngularJS An Introduction to Two-Way Data Binding Two-Way Binding: ngModelCtrl

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,252 Points
Posted by Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,252 Points

Struggling with Angular.js Two-Way Data Binding

Well, I think I've stumbled across what's going to be the toughest course I've taken on Treehouse yet.

I'm really struggling with this challenge, I think it's asking me to display the contents of the user.name property to a text box.

But I haven't got a clue how. I have a feeling the answer will be a little trickier compared to what the video teaches.

Help!!

app.js 
angular.module('myApp', [])
.controller('myController', function($scope) {
  $scope.user = {
    name: 'Alex'
  };
})
.directive('myDirective', function () {
  return {
    require: 'ngModel',
    priority: 1,
    link: function ($scope, $element, $attrs, ngModelCtrl) {

      // YOUR CODE HERE
      ngNodelCtrl.$render = function() {
        console.log(useModelCtrl.$element({{user.name}}));
    }
    };
  }
});
index.html 
<!DOCTYPE html>
<html ng-app="myApp">
<head>
  <title>Angular.js</title>
  <script src="js/angular.js"></script>
  <script src="app.js"></script>
</head>
<body ng-controller="myController">

  <p>Hello {{user.name}}</p>
  <input type="text" ng-model="user.name" />
  <div my-directive ng-model="user.name"></div>

</body>
</html>

1 Answer

Stefan Osorio
Stefan Osorio
16,419 Points
Stefan Osorio
Stefan Osorio
16,419 Points

This is my (working) code:

ngModelCtrl.$render=function(){
  console.log(ngModelCtrl.$viewValue);
};

The "{{}}" notation is exlusively for use in markup. If you want to get the current string value of a view you can use the .$viewValue method on ngModelCtrl

https://docs.angularjs.org/api/ng/type/ngModel.NgModelController