Is it allowed to use any AngularJS directives within other directives?

Question

Is it allowed to use any AngularJS directives within other directives?

I am trying to create a directive that will display a list of objects from my controller. Inside this directive, I want to be able to use one of several possible sub-directives, but the specific one to be used may vary. If I set the sub-directive name in the controller's scope, how can I dynamically incorporate it within the template of the main directive?

Here's a plnkr with the code shown below.

HTML:

<div ng-app="music" ng-controller="rock">
  <h1>Favorite Bands</h1>
  <prog></prog>
</div>

JS:

angular.module('music', []);

angular.module('music').controller('rock', ['$scope', function($scope){
  $scope.directiveName = 'dinosaurs';
  $scope.bands = [
    { name:'Rush'}, { name:'King Crimson' }, { name: 'Porcupine Tree'}, { name: 'Marillion'}];
}]);

angular.module('music').directive('prog', function(){
  return {
    restrict: 'E',
    replace: true,
    template: '<ul><li ng-repeat="band in bands"><{{directiveName}}>{{band.name}}</{{directiveName}}></li></ul>'
  };
});

angular.module('music').directive('dinosaurs', function(){
  return {
    restrict: 'E',
    transclude: true,
    template: '<ng-transclude></ngtransclude> - DINOSAUR!'
  };
});

Currently, I have set the $scope.directiveName to dinosaurs, which is the sub-directive I want to include within the main directive called prog.

In the template of prog, I am trying to dynamically insert the name of the sub-directive. However, the output shows:

<dinosaurs>Rush
<dinosaurs>King Crimson
<dinosaurs>Porcupine Tree
<dinosaurs>Marillion

I have also attempted using a class name on a span: , but Angular does not recognize it as a directive in this case.

I am unsure if using an isolate scope is necessary here, and I am still learning about transclusion. My goal with the dinosaurs directive is to append " - DINOSAURS!" to the content of each list item.

What is the most effective way to pass the name of one directive to another in Angular?

javascript angularjs

Answer 1

Answer №1

One way to simplify the process and avoid the messy $compile calls is to utilize ng-include as a switch. Here's an example implementation: check it out:

angular.module('music').directive('prog', function(){
  return {
    restrict: 'E',
    replace: true,
    template: '<ul><li ng-repeat="band in bands"><div ng-include="directiveName + \'.html\'"></div></li></ul>'
  };
});

Answer 2

One way to simplify the process and avoid the messy $compile calls is to utilize ng-include as a switch. Here's an example implementation: check it out:

angular.module('music').directive('prog', function(){
  return {
    restrict: 'E',
    replace: true,
    template: '<ul><li ng-repeat="band in bands"><div ng-include="directiveName + \'.html\'"></div></li></ul>'
  };
});

Answer 3

Answer №2

One effective approach involves transferring the responsibility of "how to render this item" from the controller/directive to the item itself.

An easy way to achieve this is by assigning the item a templateUrl property. A straightforward wrapper directive can then be created to bind the items:

myModule.directive('bandView', function() {
  return {
    scope: {band: '=bandView'}
    templateUrl: '<div ng-include="band.templateUrl"></div>'
  };
});

Subsequently, if there is a list of bands, they can be rendered like so:

<h1>My band list</h1>
<div ng-repeat="b in bands" band-view="b"></div>

Using this method, you can create different HTML templates for various rendering purposes.

Experience this concept in action: http://jsbin.com/EhAnIMaJ/2/edit?html,js,output

Answer 4

One effective approach involves transferring the responsibility of "how to render this item" from the controller/directive to the item itself.

An easy way to achieve this is by assigning the item a templateUrl property. A straightforward wrapper directive can then be created to bind the items:

myModule.directive('bandView', function() {
  return {
    scope: {band: '=bandView'}
    templateUrl: '<div ng-include="band.templateUrl"></div>'
  };
});

Subsequently, if there is a list of bands, they can be rendered like so:

<h1>My band list</h1>
<div ng-repeat="b in bands" band-view="b"></div>

Using this method, you can create different HTML templates for various rendering purposes.

Experience this concept in action: http://jsbin.com/EhAnIMaJ/2/edit?html,js,output

Answer 5

Answer №3

Latest Update: In the directive settings, there are a variety of options available to customize the template:

One simple approach is to use template:function(el, attr), which allows you to create a function that can modify the template based on specified attributes that do not require interpolation. However, this may not fully meet your requirements.

Check out this template:function() plunker example.

Alternatively, you can use $compile to transform the templates and replace the element in the link function.

Explore this $compile plunker demonstration.

Focus on Single Template:

By accessing the parent directive's controller in the link function, you can maintain scope and effectively interact with it. Here's a simplified example:

app.directive("parentDirective", function() {
  return {
    restrict: 'EA',
    controller: function($scope) {
        this.callFunc = function(){
           // your implementation here
        }
    }
  }
});

app.directive("childDirective", function($compile, $log) {

  return {
    require: '?^parentDirective',
    scope: {
       model: '=ngModel'
    },
    link : function(scope, el, attr, ctrl) {
        ctrl.callFunc();
    }
...

Check out a similar example in this plunker or this plunker.

Answer 6

Latest Update: In the directive settings, there are a variety of options available to customize the template:

One simple approach is to use template:function(el, attr), which allows you to create a function that can modify the template based on specified attributes that do not require interpolation. However, this may not fully meet your requirements.

Check out this template:function() plunker example.

Alternatively, you can use $compile to transform the templates and replace the element in the link function.

Explore this $compile plunker demonstration.

Focus on Single Template:

By accessing the parent directive's controller in the link function, you can maintain scope and effectively interact with it. Here's a simplified example:

app.directive("parentDirective", function() {
  return {
    restrict: 'EA',
    controller: function($scope) {
        this.callFunc = function(){
           // your implementation here
        }
    }
  }
});

app.directive("childDirective", function($compile, $log) {

  return {
    require: '?^parentDirective',
    scope: {
       model: '=ngModel'
    },
    link : function(scope, el, attr, ctrl) {
        ctrl.callFunc();
    }
...

Check out a similar example in this plunker or this plunker.

Is it allowed to use any AngularJS directives within other directives?

Answer №1

Answer №2

Answer №3

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