reinstate creation of letterhints from upgrades before v1.97

changelog.md

@@ -3,6 +3,9 @@ Fix for PHP 8.1 deprecation messages. Thanks to Joseph Rézeau  for
 creating the ticket for that.
 https://github.com/marcusgreen/moodle-qtype_gapfill/issues/104
 
+Re-instate the creation of letterhints field in the dbfor upgrades from
+before v1.97 in 2018
+
 ### Version 2.137 of the Moodle Gapfill question type April 2023
 Fix compatibility on mobile with dark theme (css tweak)
 https://github.com/marcusgreen/moodle-qtype_gapfill/pull/100

db/upgrade.php

@@ -87,5 +87,13 @@ function xmldb_qtype_gapfill_upgrade($oldversion = 0) {
         upgrade_plugin_savepoint(true, 2020091100, 'qtype', 'gapfill');
 
     }
+    if ($oldversion < 2023072899) {
+        if (!$dbman->field_exists('question_gapfill', 'letterhints')) {
+            $field = new xmldb_field('letterhints', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'optionsaftertext');
+            $table = new xmldb_table('question_gapfill');
+            $dbman->add_field($table, $field);
+        }
+    }
+
     return true;
 }

version.php

@@ -25,7 +25,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'qtype_gapfill';
-$plugin->version  = 2023042000;
+$plugin->version  = 2023072899;
 $plugin->requires = 2022040100;  // Moodle 4.0.
-$plugin->release = '2.137';
+$plugin->release = '2.138';
 $plugin->maturity  = MATURITY_STABLE;