fix: Removes HTML from quiz responses to close #304. (#315)

src/transformer/events/mod_quiz/question_answered/multichoice.php

@@ -27,7 +27,6 @@ function multichoice(array $config, \stdClass $event, \stdClass $questionattempt
     $quiz = $repo->read_record_by_id('quiz', $attempt->quiz);
     $coursemodule = $repo->read_record_by_id('course_modules', $event->contextinstanceid);
     $lang = utils\get_course_lang($course);
-
     return [[
         'actor' => utils\get_user($config, $user),
         'verb' => [
@@ -42,11 +41,12 @@ function multichoice(array $config, \stdClass $event, \stdClass $questionattempt
         ],
         'timestamp' => utils\get_event_timestamp($event),
         'result' => [
-            'response' => $questionattempt->responsesummary,
+            'response' => utils\get_string_html_removed($questionattempt->responsesummary),
             'success' => $questionattempt->rightanswer == $questionattempt->responsesummary,
             'completion' => $questionattempt->responsesummary !== '',
             'extensions' => [
-                'http://learninglocker.net/xapi/cmi/choice/response' => $questionattempt->responsesummary,
+                'http://learninglocker.net/xapi/cmi/choice/response' =>
+                    utils\get_string_html_removed($questionattempt->responsesummary),
             ],
         ],
         'context' => [

src/transformer/events/mod_quiz/question_answered/truefalse.php

@@ -28,7 +28,6 @@ function truefalse(array $config, \stdClass $event, \stdClass $questionattempt,
     $quiz = $repo->read_record_by_id('quiz', $attempt->quiz);
     $coursemodule = $repo->read_record_by_id('course_modules', $event->contextinstanceid);
     $lang = utils\get_course_lang($course);
-
     return [[
         'actor' => utils\get_user($config, $user),
         'verb' => [
@@ -42,14 +41,14 @@ function truefalse(array $config, \stdClass $event, \stdClass $questionattempt,
             'definition' => [
                 'type' => 'http://adlnet.gov/expapi/activities/cmi.interaction',
                 'name' => [
-                    $lang => $question->questiontext,
+                    $lang => utils\get_string_html_removed($question->questiontext),
                 ],
                 'interactionType' => 'true-false',
             ]
         ],
         'timestamp' => utils\get_event_timestamp($event),
         'result' => [
-            'response' => $questionattempt->responsesummary,
+            'response' => utils\get_string_html_removed($questionattempt->responsesummary),
             'completion' => $questionattempt->responsesummary !== null,
             'success' => $questionattempt->rightanswer === $questionattempt->responsesummary,
             'extensions' => [

src/transformer/utils/get_multichoice_definition.php

@@ -15,6 +15,7 @@
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 namespace src\transformer\utils;
+use src\transformer\utils as utils;
 defined('MOODLE_INTERNAL') || die();
 
 function get_multichoice_definition(array $config, \stdClass $questionattempt, \stdClass $question, $lang) {
@@ -27,27 +28,28 @@ function get_multichoice_definition(array $config, \stdClass $questionattempt, \
             return [
                 "id" => "$answer->id",
                 "description" => [
-                    $lang => $answer->answer
+                    $lang => utils\get_string_html_removed($answer->answer)
                 ]
             ];
         }, $answers);
         return [
             'type' => 'http://adlnet.gov/expapi/activities/cmi.interaction',
             'name' => [
-                $lang => $question->questiontext,
+                $lang => utils\get_string_html_removed($question->questiontext),
             ],
             'interactionType' => 'choice',
             'correctResponsesPattern' => [
-                $questionattempt->rightanswer,
+                utils\get_string_html_removed($questionattempt->rightanswer),
             ],
-            'choices' => $choices
+            // Need to pull out id's that are appended during array_map so json parses it correctly as an array.
+            'choices' => array_values($choices)
         ];
     }
 
     return [
         'type' => 'http://adlnet.gov/expapi/activities/cmi.interaction',
         'name' => [
-            $lang => $question->questiontext,
+            $lang => utils\get_string_html_removed($question->questiontext),
         ],
         'interactionType' => 'choice'
     ];

src/transformer/utils/get_string_html_removed.php

+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace src\transformer\utils;
+defined('MOODLE_INTERNAL') || die();
+
+function get_string_html_removed($string) {
+    // For some reason, newlines and &nbsp; is being added to strings,
+    // in order to remove new lines we have to ensure nbsp is also removed.
+    $replacestrings = ["\n", "&nbsp;"];
+    return str_replace($replacestrings, "", strip_tags($string));
+}
\ No newline at end of file