Utilize a specialized directive within the template of another custom directive

I have created a custom directive in angular called 'teeth' that generates multiple canvas elements on my HTML page. Inside the 'teeth' directive, I am trying to use another custom directive named 'draw' to trigger an event when a canvas element is clicked. However, I am facing issues with the click event not working as expected. Can someone please provide guidance on how to resolve this issue?

(function () {

var controller = function ($scope) {

};

controller.$inject = ['$scope'];

var teeth = function () {
    return {
        restrict: 'E',        
        controller: controller,
        link: function ($scope, element, attrs) {

            function init(){
                var count = 5;
                var html = '<div class="row">'

                for(var i=0; i<count;i++){
                    html += '<div class="test">'+
                                '<canvas id="'+i+'" width="58px" height="58px" draw></canvas>'+
                            '</div>';
                }
                html += '</div>';
                element.html(html);
            }

            init();
        }
    }
};

angular.module('graphApp').directive('teeth', teeth);
}());

(function () {
var controller = function ($scope) { 
};
controller.$inject = ['$scope'];
var draw = function () {
    return {
        restrict: 'A',    
        scope: {
            id: '@id' 
        },
        controller: controller,
        link: function ($scope, element, attrs) {
            element.on('click',function(event){
                alert('element '+$scope.id+' clicked');
            });
        }
    }
};
angular.module('graphApp').directive('draw', draw);
}());

Answer №1

When incorporating a directive within another directive, it is necessary to utilize $compile for compilation and use replaceWith to display it as demonstrated below.

Functional code snippet:

var app = angular.module('graphApp', []);

(function () {
var controller = function ($scope) { 
};
controller.$inject = ['$scope'];
var draw = function () {
    return {
        restrict: 'A',    
        scope: {
            id: '@id' 
        },
        controller: controller,
        link: function ($scope, element, attrs) {
            element.on('click',function(event){
                alert('element '+$scope.id+' clicked');
            });
        }
    }
};
angular.module('graphApp').directive('draw', draw);
}());

(function () {

var controller = function ($scope) {

};

controller.$inject = ['$scope'];

var teeth = function ($compile) {
    return {
        restrict: 'E',        
        controller: controller,
        link: function ($scope, element, attrs) {

            function init(){
                var count = 5;
                var html = '<div class="row">'

                for(var i=0; i<count;i++){
                    html += '<div class="test">'+
                                '<canvas id="'+i+'" width="58px" height="58px" draw></canvas>'+
                            '</div>';
                }
                html += '</div>';
                element.replaceWith($compile(html)($scope));
            }

            init();
        }
    }
};

angular.module('graphApp').directive('teeth', teeth);
}());
canvas {
  border: 1px solid;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="graphApp">
   <teeth></teeth>
</div>

Answer №2

There are multiple solutions to consider for this particular use-case

For a comprehensive understanding, check out this post on AngularJS: ngInclude vs directive. It will help you decide whether using ng-include or compile is more suitable for your requirements.

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