MDL-42904 self_enrol: Set customint1 if it's null

enrol/self/db/upgrade.php

@@ -41,7 +41,11 @@ function xmldb_enrol_self_upgrade($oldversion) {
 
     // Moodle v2.4.0 release upgrade line
     // Put any upgrade step following this
-
+    if ($oldversion < 2013112100) {
+        // Set customint1 (group enrolment key) to 0 if it was not set (null).
+        $DB->execute("UPDATE {enrol} SET customint1 = 0 WHERE enrol = 'self' AND customint1 IS NULL");
+        upgrade_plugin_savepoint(true, 2013112100, 'enrol', 'self');
+    }
 
     return true;
 }

enrol/self/version.php

@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2012112900;        // The current plugin version (Date: YYYYMMDDXX)
+$plugin->version   = 2013112100;        // The current plugin version (Date: YYYYMMDDXX)
 $plugin->requires  = 2012112900;        // Requires this Moodle version
 $plugin->component = 'enrol_self';      // Full name of the plugin (used for diagnostics)
 $plugin->cron      = 600;