How can you render sub-directives using Transclude and ng-bind?

Question

How can you render sub-directives using Transclude and ng-bind?

Lately, I've been struggling to figure out how to dynamically change the content of a directive in AngularJS.

Initially, in my HTML, there is a parent directive with a child directive inside. Every now and then, I need to update the content of the parent directive, but the child directive that I'm trying to insert isn't being initialized by AngularJS. To better illustrate my issue, I created a JSFiddle: http://jsfiddle.net/koj2e1th/2/

When I try to update the content using $timeout, the directive isn't properly initialized:

$timeout(function(){
    html = '<child-dir>TIMEOUT</child-dir>'
    scope.content = $sce.trustAsHtml(html)
}, 2500)

I attempted to use $compile (as suggested in other posts) but couldn't get it to work correctly. Can someone please explain how to make $compile function in this scenario and ensure that my child-dir gets rendered properly?

Thank you in advance!

javascript angularjs

Answer 1

Answer №1

To ensure the child-dir directive is compiled correctly, it must be compiled with a scope before being added to the DOM. Learn more

var example = angular.module('example', []);
example.directive('parentDir', function($sce, $timeout, $compile) {
    return {
        restrict: 'E',
            transclude: true,
            template: '<div ng-bind-html="content"></div>',
        link: function (scope, element, attrs, controller, transcludeFn) {
            transcludeFn(function(html) {
              $timeout(function() {
                html = _.reduce(html, function(carry, domElement) {
                  if (domElement.outerHTML) {
                      return carry + domElement.outerHTML
                  } else {
                    return carry;
                  }
                }, '')
                scope.content = $sce.trustAsHtml(html)
              })
            })
            var el = $compile( "<child-dir>TIMEOUT</child-dir>" )(scope );
            element.parent().append( el );
        }
    }});

example.directive('childDir', function($sce) {
    return {
        restrict: 'E',
            transclude: true,
            template: '<div>CHILD DIR</div>'
    }});

Answer 2

To ensure the child-dir directive is compiled correctly, it must be compiled with a scope before being added to the DOM. Learn more

var example = angular.module('example', []);
example.directive('parentDir', function($sce, $timeout, $compile) {
    return {
        restrict: 'E',
            transclude: true,
            template: '<div ng-bind-html="content"></div>',
        link: function (scope, element, attrs, controller, transcludeFn) {
            transcludeFn(function(html) {
              $timeout(function() {
                html = _.reduce(html, function(carry, domElement) {
                  if (domElement.outerHTML) {
                      return carry + domElement.outerHTML
                  } else {
                    return carry;
                  }
                }, '')
                scope.content = $sce.trustAsHtml(html)
              })
            })
            var el = $compile( "<child-dir>TIMEOUT</child-dir>" )(scope );
            element.parent().append( el );
        }
    }});

example.directive('childDir', function($sce) {
    return {
        restrict: 'E',
            transclude: true,
            template: '<div>CHILD DIR</div>'
    }});

Answer 3

Answer №2

It appears from the provided code snippet that you are attempting to manage transclusion manually.

However, there is no need to do so with the availability of the tranclude property and ng-transclude attributes.

You can enhance your directive definitions to incorporate this functionality as shown below:

/* ... */
.directive('parentDir', function(){
   return {
     transclude: true,
     link: function(){ /* Any necessary DOM manipulation logic here */ },
     template: '<div ><h2>Parent Directive</h2><div ng-transcude></div></div>'
   };
})
.directive('childDir', function(){
   return {
     transclude: true,
     template: '<div ><h4>Child directive</h4><div ng-transclude></div></div>'
   };
});

Please note the utilization of the ng-transclude attribute in the template. This informs AngularJS regarding where exactly to place the transcluded elements/directives.

Thus, if your directives were structured like this:

<parent-dir>
   <child-dir></child-dir>
</parent-dir>

the content within <child-dir> would be inserted into the <div ng-transclude> section of the <parent-dir> template in the final rendered output.

View Demo

Answer 4

It appears from the provided code snippet that you are attempting to manage transclusion manually.

However, there is no need to do so with the availability of the tranclude property and ng-transclude attributes.

You can enhance your directive definitions to incorporate this functionality as shown below:

/* ... */
.directive('parentDir', function(){
   return {
     transclude: true,
     link: function(){ /* Any necessary DOM manipulation logic here */ },
     template: '<div ><h2>Parent Directive</h2><div ng-transcude></div></div>'
   };
})
.directive('childDir', function(){
   return {
     transclude: true,
     template: '<div ><h4>Child directive</h4><div ng-transclude></div></div>'
   };
});

Please note the utilization of the ng-transclude attribute in the template. This informs AngularJS regarding where exactly to place the transcluded elements/directives.

Thus, if your directives were structured like this:

<parent-dir>
   <child-dir></child-dir>
</parent-dir>

the content within <child-dir> would be inserted into the <div ng-transclude> section of the <parent-dir> template in the final rendered output.

How can you render sub-directives using Transclude and ng-bind?

Answer №1

Answer №2

View Demo

Similar questions

Leverage the power of mathematical functions within Angular to convert numbers into integers

Using JavaScript, insert a new date row onto a JSP page

React's performance severely lags when traversing through JSON data

The Android webview is blocking the display of a frame due to its X-Frame-Options being set to 'DENY'

Instructions on adjusting column visibility after refreshing the page

Locating the ID of the child div that was clicked within a parent div element

Is it possible to return a string and send it to a different HTML file using AJAX POST?

Re-sequence a contiguous array by mapping and filtering its elements

Troubleshooting a CSS problem with iPad browsers

Use a filter to narrow down results based on a column containing comma-separated values, as well as another specified

Changing the text displayed after a checkbox is checked

Changing a numeric string into a number within an Angular 2 application

Can Vuejs delay the calculation of a computed property until the component is "ready"?

Resposiveness of force-directed graph is lost

How to handle the Conflict in jest snapshot testing when the source is deleted and target is modified?

Tips for fixing flickering tables and bringing the scrollbar back to the top in your DataTable Forge viewer

What is the best way to attach a Child mesh to a Parent mesh?

Determine the frequency of occurrences in an array where two elements are less than or equal to a specified sum - Using JavaScript

Is it feasible to retrieve and view local storage data within an Electron application?

Ways to display a particular div when clicked and conceal the rest