Platform OnChange about moodle-enrol_arlo HOT 2 CLOSED

// New method in enrol plugin.
enrol_arlo_plugin->change_platform($oldplatform, $newplatform)
if ($oldplatform == $newplatform) {
   return;
}
$rs = $DB->get_recordset('enrol', array('enrol' => 'arlo'));
foreach ($rs as $instance) {
    $this->delete_instance($instance);
}
$rs->close();
role_unassign_all(array('component' => 'enrol_arlo'));
// Clear any create password flags.
$DB->delete_records('user_preferences', array('name' => 'enrol_arlo_createpassword'));
// Clear out tables.
$DB->delete_records('enrol_arlo_collection', array('platform' =>$oldplatform));
$DB->delete_records('enrol_arlo_contact', array('platform' =>$oldplatform));
$DB->delete_records('enrol_arlo_contact', array('event' =>$oldplatform));
e.t.c
// Finally purge all caches.
purge_all_caches();