Is it possible to include content from another directive within a child directive in Angular?

I am trying to implement a feature in my app that looks like this:

<pill-autocomplete>
  <pill-template>{{item.name}}</pill-template>
</pill-autocomplete>

However, I am facing challenges as ng-transclude creates scope and the <pills> directive has an isolate scope. This makes it difficult to achieve the desired functionality.

One potential solution I have considered is injecting the pill template within the autocomplete's template function. However, this approach loses the transclusion scope and would need to be repeated for each directive with similar pill behavior.

Are there any alternative methods to achieve this in Angular 1.x?

Answer №1

The issue arises when transferring data from pill-autocomplete to pills as the content inside pills gets deleted in the process.

During transclusion, the content underneath the directive template is replaced, resulting in the inability to load the content within the pills directive template since it has been overridden by the transclusion process.

To address this, a simple solution would be to avoid using the <div> tag directly with ng-transclude inside. Instead, utilize an internal div to enable the directive to successfully load its content.

Answer №2

If you're looking to pass data to your child directive, here's a simple way to achieve it. Feel free to ask if anything is unclear.

function exampleController($scope) {
  $scope.data = [
    'cupidatat',
    'laboris',
    'minim',
    'nisi',
    'anim',
    'id',
    'laboris'
  ];
}

function exampleParentDirective() {
  return {
    restrict: 'E',
    scope: {
      data: '='
    },
    template: '<div class="parent-example"></div>'
      // You can also use the child directive within this DDO's template.
      //template: '<div class="parent-example"><example-directive data="data"></example-directive></div>'
  };
}

function exampleDirective() {
  return {
    restrict: 'E',
    scope: {
      data: '='
    },
    template: '<div class="child-example" ng-repeat="ipsum in data track by $index" ng-bind="ipsum"></div>',
    link: function($scope) {
      // This link function is not necessary unless additional processing is required in the child directive.
    }
  };
}

angular
  .module('app', [])
  .controller('exampleController', exampleController)
  .directive('exampleParentDirective', exampleParentDirective)
  .directive('exampleDirective', exampleDirective);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div class="container" ng-app="app">
  <div class="row" ng-controller="exampleController">
    <example-parent-directive data="data"></example-parent-directive>
    <example-directive data="data"></example-directive>
  </div>
</div>

Answer №3

This example may be of assistance
https://docs.angularjs.org/guide/directive

index.html

 <my-tabs>
  <my-pane title="Hello">
    <p>Lorem ipsum dolor sit amet</p>
  </my-pane>
  <my-pane title="World">
    <em>Mauris elementum elementum enim at suscipit.</em>
    <p><a href ng-click="i = i + 1">counter: {{i || 0}}</a></p>
  </my-pane>
</my-tabs>

my-tabs.html

<div class="tabbable">
  <ul class="nav nav-tabs">
    <li ng-repeat="pane in panes" ng-class="{active:pane.selected}">
      <a href="" ng-click="select(pane)">{{pane.title}}</a>
    </li>
  </ul>
  <div class="tab-content" ng-transclude></div>
</div>

my-pane.html

<div class="tab-pane" ng-show="selected">
  <h4>{{title}}</h4>
  <div ng-transclude></div>
</div>

in the script.js file

angular.module('docsTabsExample', [])
.directive('myTabs', function() {
  return {
    restrict: 'E',
    transclude: true,
    scope: {},
    controller: ['$scope', function MyTabsController($scope) {
      var panes = $scope.panes = [];

      $scope.select = function(pane) {
        angular.forEach(panes, function(pane) {
          pane.selected = false;
        });
        pane.selected = true;
      };

      this.addPane = function(pane) {
        if (panes.length === 0) {
          $scope.select(pane);
        }
        panes.push(pane);
      };
    }],
    templateUrl: 'my-tabs.html'
  };
})
.directive('myPane', function() {
  return {
    require: '^^myTabs',
    restrict: 'E',
    transclude: true,
    scope: {
      title: '@'
    },
    link: function(scope, element, attrs, tabsCtrl) {
      tabsCtrl.addPane(scope);
    },
    templateUrl: 'my-pane.html'
  };
});

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