Creating mobile question types

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An empty template for creating quiz question types with mobile support is available from here

There was a presentation on modifying questions type to support the app at the November 2018 developers meeting. You can find a recording of this here

The associated slide show is here.

The files that need to be modified/added are


defined('MOODLE_INTERNAL') || die();
$addons = [
    "qtype_YOURQTYPENAME" => [
        "handlers" => [ // Different places where the add-on will display content.
            'YOURQTYPENAME' => [ // Handler unique name (can be anything).
                'displaydata' => [
                    'title' => 'YOURQTYPENAME question',
                    'icon' => '/question/type/YOURQTYPENAME/pix/icon.gif',
                    'class' => '',
                'delegate' => 'CoreQuestionDelegate', // Delegate (where to display the link to the add-on).
                'method' => 'mobile_get_YOURQTYPENAME',
                'offlinefunctions' => [
                    'mobile_get_YOURQTYPENAME' => [],// function in classes/output/mobile.php
                ], // Function needs caching for offline.
                'styles' => [
                    'url' => '/question/type/YOURQTYPENAME/mobile/styles_app.css',
                    'version' => '1.00'
        'lang' => [
                    ['pluginname', 'qtype_YOURQTYPENAME'], // matching value in  lang/en/qtype_YOURQTYPENAME

html template

Your question type will need an html/ionic markup template file that controls how it is displayed at runtime. Ionic markup is based on the Angular template syntax which you can read about here

You can see a real world examples of question type templates at and

(oumr.html is probably a more sensible naming convetion)

Create a file named mobile/addon-qtype-YOURQTYPENAME.html

<section class="list qtype-YOURQTYPENAME-container qtype-YOURQTYPENAME" ion-list *ngIf="question.text || question.text === ''">
    <ion-item text-wrap class="addon-qtype-YOURQTYPENAME-container qtext">
        <p><core-format-text  [component]="component" [componentId]="componentId" 
            [text]="question.text" (afterRender)="questionRendered()"></core-format-text></p>     

The reference to questionRendered() will call the method of that name in the mobile/mobile.js file.


This file connects PHP with the html/ionic markup template and the mobile.js javascript which contains most of the runtime logic

namespace qtype_YOURQTYPENAME\output;
defined('MOODLE_INTERNAL') || die();
class mobile {
class mobile {
    public static function mobile_get_YOURQTYPENAME() {
        global $CFG;
        return [
            'templates' => [
                    'id' => 'main',
                    'html' => file_get_contents($CFG->dirroot .'/question/type/YOURQTYPENAME/mobile/addon-qtype-YOURQTYPENAME.html')
            'javascript' => file_get_contents($CFG->dirroot . '/question/type/YOURQTYPENAME/mobile/mobile.js')


This is where most of the logic is placed such as changing css classes. You can see real world implementations of this file at


var that = this;
var result = {
    componentInit: function() {
        if (!this.question) {
            console.warn('Aborting because of no question received.');
            return that.CoreQuestionHelperProvider.showComponentError(that.onAbort);
        const div = document.createElement('div');
        div.innerHTML = this.question.html;
         // Get question questiontext.
        const questiontext = div.querySelector('.qtext');
        // Replace Moodle's correct/incorrect and feedback classes with our own.
        // Only do this if you want to use the standard classes
         // Treat the correct/incorrect icons.
        if (div.querySelector('.readonly') !== null) {
            this.question.readonly = true;
        if (div.querySelector('.feedback') !== null) {
   = div.querySelector('.feedback');
            this.question.feedbackHTML = true;
         this.question.text = this.CoreDomUtilsProvider.getContentsOfElement(div, '.qtext');
        if (typeof this.question.text == 'undefined') {
            this.logger.warn('Aborting because of an error parsing question.',;
            return this.CoreQuestionHelperProvider.showComponentError(this.onAbort);
        // Called by the reference in *.html to 
        // (afterRender)="questionRendered()
        this.questionRendered = function questionRendered() {
            //do stuff that needs the question rendered before it can run.
        // Wait for the DOM to be rendered.
        setTimeout(() => {
            //put stuff here that will be pulled from the rendered question
        return true;


This assumes you have class="qtype-YOURQTYPENAME-container in your html template. Changes will be updated when you increment the value of styles[version] in db/mobile.php

.qtype-YOURQTYPENAME .yourclassname {
     attributename: attributevalue;