Dynamically add a directive

Question

I'm generating a report with collection of questions.

app.controller('reportCtrl', ['$scope','$stateParams', function ($scope, $stateParams) {

    $scope.questions: [
        { questionkey: 1, questiontext: 'Type', questiontype: 1 , questionmodel:'accsType' },
        { questionkey: 2, questiontext: 'Reported By', questiontype: 1, questionmodel: 'accsReportedBy' },
        { questionkey: 3, questiontext: 'Time and Date', questiontype: 6, questionmodel: 'accsCurrentDate' },
        { questionkey: 4, questiontext: 'Address', questiontype: 2, questionmodel: 'accsAddress' },
        { questionkey: 5, questiontext: 'Coordinates', questiontype: 6, questionmodel: 'accsCoordinates' },
        { questionkey: 6, questiontext: 'Blank', questiontype: 1, questionmodel: 'accsBlank1' },
        { questionkey: 7, questiontext: 'Blank', questiontype: 1, questionmodel: 'accsBlank2' },
        { questionkey: 8, questiontext: 'Blank', questiontype: 1, questionmodel: 'accsBlank3' },
        { questionkey: 9, questiontext: 'Blank', questiontype: 1, questionmodel: 'accsBlank4' },
        { questionkey: 10, questiontext: 'Details of Survey', questiontype: 2, questionmodel: 'accsDetailsSurvey' },
        { questionkey: 11, questiontext: 'Photos', questiontype: 5, questionmodel: 'accsPhotos' }
    ];

}]);

and I've created a custom directive to draw the questions according to the question types Eg question type 1 is text box type 2 is textarea

<question contents="questions"></question>

app.directive('question', function ($compile) {
    return {
        transclude: true,
        restrict: 'E',
        scope: {
            contents: '='
        },  
        link: function (scope, element, attrs) {   
            angular.forEach(scope.contents, function (k, v) {
                var ele;

                switch (parseInt(k.question.questiontype)) {
                    case 1:
                        ele = $compile("<accstextbox data='k.question'></accstextbox>")(scope);
                        break;
                    case 2:
                        ele = $compile("<accstextarea data='k.question'></accstextarea>")(scope);
                        break;
                }

                element.append(ele);
            });
        }         
    };
});

I've created a directive for each question types

app.directive('accstextbox', [function () {
    return {
        restrict: 'E',
        templateUrl: 'app/directives/questions/textbox.html',
        link: function (scope, element, attrs) {
           console.log(scope.data); // undefined
        },
        scope:{
            data: '='
        }
    };
}]);

app.directive('accstextarea', [function () {
    return {
        restrict: 'E',
        templateUrl: 'app/directives/questions/textarea.html',
         link: function (scope, element, attrs) {
           console.log(scope.data); // undefined
        },
        scope: {
            data: '='
        }
    };
}]);

when i dynamically add those directives, i'm passing the data object via attribute. that data object is undefined in the child directive scope. first time i'm using angularjs for my project.

Answer 1

Your solution will not work since k is a local variable and is no accessible for the $compiler service.

A solution for this is to make your directive use ngRepeat and ngIf to generate the final layout through templates:

app.directive('question', function ($compile) {
    return {
        transclude: true,
        restrict: 'E',
        templateUrl: 'app/directives/questions.html',
        scope: {
            contents: '='
        }      
    };
});

And the app/directives/questions.html:

<div ng-repeat="question in contents">
    <accstextbox ng-if="question.questiontype == 1" data="question"></accstextbox>
    <accstextarea ng-if="question.questiontype == 2" data="question"></accstextarea>
</div>

Since this is a really small template, you may add it to the template configuration parameter of the directive, instead of loading it from the server through templateUrl.

Hope this will help you!