fix: Corrects response formatting for multichoice questions to fix #440. (#447 - Thanks @garemoko)

lang/en/logstore_xapi.php

@@ -48,6 +48,6 @@ $string['shortcourseid_desc'] = 'Statements will contain the shortname for a cou
 $string['sendidnumber'] = 'Send course and activity ID number';
 $string['sendidnumber_desc'] = 'Statements will include the ID number (admin defined) for courses and activities in the object extensions';
 $string['send_response_choices'] = 'Send response choices';
-$string['send_response_choices_desc'] = 'Statements for multiple choice question answers will be sent to the LRS with the correct response and potential choices';
+$string['send_response_choices_desc'] = 'Statements for multiple choice and sequencing question answers will be sent to the LRS with the correct response and potential choices';
 $string['resendfailedbatches'] = 'Resend failed batches';
 $string['resendfailedbatches_desc'] = 'When processing events in batches, try re-sending events in smaller batches if a batch fails. If not selected, the whole batch will not be sent in the event of a failed event.';

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

@@ -40,17 +40,11 @@ function gapselect(array $config, \stdClass $event, \stdClass $questionattempt,
         ],
         'object' => [
             'id' => utils\get_quiz_question_id($config, $coursemodule->id, $question->id),
-            'definition' => [
-                'type' => 'http://adlnet.gov/expapi/activities/cmi.interaction',
-                'name' => [
-                    $lang => utils\get_string_html_removed($question->questiontext)
-                ],
-                'interactionType' => 'sequencing',
-            ]
+            'definition' => utils\get_multichoice_definition($config, $questionattempt, $question, $lang, 'sequencing'),
         ],
         'timestamp' => utils\get_event_timestamp($event),
         'result' => [
-            'response' => $questionattempt->responsesummary,
+            'response' => implode ('[,]', $selections),
             'completion' => $questionattempt->responsesummary !== null,
             'success' => $questionattempt->rightanswer === $questionattempt->responsesummary,
             'extensions' => [

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

@@ -27,6 +27,7 @@ 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);
+    $selections = explode('; ', utils\get_string_html_removed($questionattempt->responsesummary));
     return [[
         'actor' => utils\get_user($config, $user),
         'verb' => [
@@ -41,7 +42,7 @@ function multichoice(array $config, \stdClass $event, \stdClass $questionattempt
         ],
         'timestamp' => utils\get_event_timestamp($event),
         'result' => [
-            'response' => utils\get_string_html_removed($questionattempt->responsesummary),
+            'response' => implode ('[,]', $selections),
             'success' => $questionattempt->rightanswer == $questionattempt->responsesummary,
             'completion' => $questionattempt->responsesummary !== '',
             'extensions' => [

src/transformer/utils/get_multichoice_definition.php

@@ -18,7 +18,7 @@ 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) {
+function get_multichoice_definition(array $config, \stdClass $questionattempt, \stdClass $question, $lang, $interactiontype = 'choice') {
     if ($config['send_response_choices']) {
         $repo = $config['repo'];
         $answers = $repo->read_records('question_answers', [
@@ -32,15 +32,26 @@ function get_multichoice_definition(array $config, \stdClass $questionattempt, \
                 ]
             ];
         }, $answers);
+
+        $correctresponsepattern;
+        switch ($interactiontype) {
+            case 'sequencing':
+                $selections = explode('} {', rtrim(ltrim($questionattempt->rightanswer, '{'), '}'));
+                $correctresponsepattern = implode ('[,]', $selections);
+                break;
+            default:
+                $selections = explode('; ', utils\get_string_html_removed($questionattempt->rightanswer));
+                $correctresponsepattern = implode ('[,]', $selections);
+                break;
+        }
+
         return [
             'type' => 'http://adlnet.gov/expapi/activities/cmi.interaction',
             'name' => [
                 $lang => utils\get_string_html_removed($question->questiontext),
             ],
-            'interactionType' => 'choice',
-            'correctResponsesPattern' => [
-                utils\get_string_html_removed($questionattempt->rightanswer),
-            ],
+            'interactionType' => $interactiontype,
+            'correctResponsesPattern' => [$correctresponsepattern],
             // Need to pull out id's that are appended during array_map so json parses it correctly as an array.
             'choices' => array_values($choices)
         ];
@@ -51,6 +62,6 @@ function get_multichoice_definition(array $config, \stdClass $questionattempt, \
         'name' => [
             $lang => utils\get_string_html_removed($question->questiontext),
         ],
-        'interactionType' => 'choice'
+        'interactionType' => $interactiontype
     ];
 }

tests/mod_quiz/attempt_submitted/gapselect/statements.json

@@ -117,7 +117,7 @@
         },
         "timestamp": "2015-06-10T15:31:41+01:00",
         "result": {
-            "response": "{spicy} {mango} {milkshake}",
+            "response": "spicy[,]mango[,]milkshake",
             "completion": true,
             "success": true,
             "extensions": {

tests/mod_quiz/attempt_submitted/multichoiceset/statements.json

@@ -117,7 +117,7 @@
         },
         "timestamp": "2015-06-10T15:31:41+01:00",
         "result": {
-            "response": "answer 1; answer 2",
+            "response": "answer 1[,]answer 2",
             "success": true,
             "completion": true,
             "extensions": {

tests/mod_quiz/attempt_submitted/multichoiceset_withchoices/statements.json

@@ -114,7 +114,7 @@
                 },
                 "interactionType": "choice",
                 "correctResponsesPattern": [
-                    "answer 1; answer 2"
+                    "answer 1[,]answer 2"
                 ],
                 "choices": [
                     {
@@ -140,7 +140,7 @@
         },
         "timestamp": "2015-06-10T15:31:41+01:00",
         "result": {
-            "response": "answer 1; answer 2",
+            "response": "answer 1[,]answer 2",
             "success": true,
             "completion": true,
             "extensions": {