/**
* Updates the AUTOSAVE stash of the given persistent stage
*
* For every user, AMOS keeps a single instance of mlang_stash to store the most recent
* stage state. This behaves as a backup of the staged strings before they are committed.
*
* @param mlang_persistent_stage $stage
*/
public static function autosave(mlang_persistent_stage $stage)
{
global $DB;
$instance = new mlang_stash($stage->userid);
$instance->name = 'AUTOSAVE';
$instance->set_stage($stage);
$instance->hash = 'xxxxautosaveuser' . $stage->userid;
if ($id = $DB->get_field('amos_stashes', 'id', array('hash' => $instance->hash, 'ownerid' => $stage->userid))) {
$instance->id = $id;
}
$instance->push();
}
