Is there a way to dynamically enable ui-sref through element.append in Angular?

I am in the process of developing a pagination directive. Once the total_for_pagination data is filled, the appropriate HTML for the pagination gets generated.

Here's my current HTML structure with a maximum of 50 per page:

<pagination data-number="{{ total_for_pagination }}" data-max="50"></pagination>

Now, let's take a look at my custom directive:

    link: function(scope, element, attrs){
        scope.$watch(function(){return attrs.number;}, function(){
            //A watch is needed because a database query determines the number of elements to paginate.
            var page_element = '<ul>';
            for(var i = 0; i*attrs.max<attrs.number; i+=1){
                page_element += '<li class="pagination"><a ui-sref="users({start: '+i*attrs.max+', end: '+((i*attrs.max)+(attrs.max-1))+'})">'+i+'</a></li>';
            }
            page_element += '</ul>';
            element.append(page_element);
        });
    }

It seems that although the generated HTML looks correct upon inspection, clicking on the ui-sref link does not change the state. However, when I directly place the same code it works fine.

What could be causing this issue? Thank you!

Answer №1

To achieve the desired outcome, it is essential to leverage one of the core features of AngularJS: $compile. You can see this in action in a live working example. The key line responsible for the magic is:

$compile(element.contents())(scope);

The directive definition could look like this:

.directive("myDirective", function($compile){
  return {
    restrict: 'A',
    link: function(scope, element, attrs){
        scope.$watch(function(){return attrs.number;}, function(){
            var page_element = '<ul>'
            +'<li><a ui-sref="home">ui-sref="home"</a></li>'
            +'<li><a ui-sref="other">ui-sref="other"</a></li>'
            + '</ul>';
            element.append(page_element);
            $compile(element.contents())(scope);  
        });
    }
  }
})

This setup will cater to the following states:

  .state('home', {
    url: "/home",
    templateUrl: 'tpl.html',
  })
  .state('other', {
    url: "/other",
    templateUrl: 'tpl.html',
  })

It fulfills what is needed. You can view the functionality in action here. Additionally, you may find the following topic pertinent: Form Validation and fields added with $compile

Answer №2

My successful method involved declaring an array within the controller/directive and implementing ng-repeat in the HTML list items. By updating the array dynamically, the elements were automatically updated, and the ui-sref functionality also worked seamlessly. In cases where it did not work initially, applying $scope could resolve the issue.

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