AngularJS - Create a directive that uses ng-model

🚀 Introducing: AngularJS Directives with ng-model! 🎉

Are you ready to dive into the magical world of AngularJS directives? 🌟 In this blog post, we will explore how to create a directive that uses ng-model, address common issues, and provide easy solutions. So, let's get started! 💪

The Problem 😱

You want to create a directive that dynamically creates an input field with the same ng-model as the element that triggers the directive. However, you're facing two challenges:

1. The control is not getting initialized with the value of the ng-model target field.

2. You're not sure if your approach is correct. 😕

The Solution 💡

To solve the first challenge, we need to make a small adjustment to the code. Notice the line that says var textField = ...? We need to remove the line that sets the value of the input to the evaluated value of attr.ngModel. This is not necessary since the ng-model directive will automatically handle the initialization for us. 😎

So, your updated link function should look like this:

link: function($scope, elem, attr, ctrl) {
  $scope.label = attr.ngModel;
  $scope.id = attr.ngModel;
  console.debug(attr.ngModel);
  console.debug($scope.$parent.$eval(attr.ngModel));
  var textField = $('input', elem)
    .attr('ng-model', attr.ngModel);

  $compile(textField)($scope.$parent);
}

Now, let's address the second challenge. By removing ng-model="value" from the directive's template, you're on the right track! ✅ This approach allows the ng-model directive to do its magic and bind the value automatically.

With these changes, your directive should work correctly and initialize with the value of the ng-model target field. Hooray! 🎉

Test it out! 🚀

To see the magic in action, we have prepared a Plunker for you. Check it out here. Feel free to modify the code and experiment with different scenarios. 😃

The Wrap-Up 🎁

Creating AngularJS directives with ng-model can seem daunting at first, but with a little guidance, you can tackle any challenge that comes your way. Remember to remove unnecessary code and allow ng-model to handle the initialization for you.

Now it's your turn! Have you encountered any roadblocks while using AngularJS directives with ng-model? Share your experiences and let's keep learning together! 💪💡

Leave a comment below and join the discussion! 🗣️💬 Can't wait to hear your thoughts and experiences.

Happy coding! 💻✨