Set the default response format via a new site wide setting

edit_aitext_form.php

@@ -87,7 +87,8 @@ protected function definition_inner($mform) {
 
         $mform->addElement('select', 'responseformat',
                 get_string('responseformat', 'qtype_aitext'), $qtype->response_formats());
-        $mform->setDefault('responseformat', $this->get_default_value('responseformat', 'editor'));
+        xdebug_break();
+        $mform->setDefault('responseformat', get_config('qtype_aitext', 'responseformat'));
 
         $mform->addElement('select', 'responsefieldlines',
                 get_string('responsefieldlines', 'qtype_aitext'), $qtype->response_sizes());

lang/en/qtype_aitext.php

@@ -83,6 +83,7 @@
 $string['prompttester'] = 'Prompt Tester';
 $string['responsefieldlines'] = 'Input box size';
 $string['responseformat'] = 'Response format';
+$string['responseformat_setting'] = 'The editor the student uses when responding';
 $string['responseoptions'] = 'Response options';
 $string['responsenotrequired'] = 'Text input is optional';
 $string['responseisrequired'] = 'Require the student to enter text';

renderer.php

@@ -23,13 +23,12 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-use Random\RandomException;
 
 defined('MOODLE_INTERNAL') || die();
 /**
  * Generates the output for aitext questions.
  *
- * @copyright  2023 Marcus Green
+ * @copyright  2024 Marcus Green
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class qtype_aitext_renderer extends qtype_renderer {

settings.php

@@ -60,5 +60,12 @@
         20,
         6
     ));
+    $settings->add(new admin_setting_configselect(
+        'qtype_aitext/responseformat',
+        new lang_string('responseformat', 'qtype_aitext'),
+        new lang_string('responseformat_setting', 'qtype_aitext'),
+        0, ['plain' => 'plain', 'editor' => 'editor', 'monospaced' => 'monospaced']
+    ));
+
 }