if (!is_null($cmd)) { // instanciate assignment object $assignment = new Assignment(); if (!is_null($assigId)) { // we handle a particular assignment, no form has been posted (delete, change visibility , ask for edition) // read assignment if (!$assignment->load($assigId)) { // could not read assignment $cmd = null; $assigId = null; } } if (isset($_REQUEST['submitAssignment']) && !is_null($cmd)) { // form submitted if (isset($_REQUEST['title'])) { $assignment->setTitle(strip_tags(trim($_REQUEST['title']))); } if (!isset($_REQUEST['description']) || trim(strip_tags($_REQUEST['description'], $allowedTags)) == '') { $assignment->setDescription(''); // avoid multiple br tags to be added when editing an empty form } else { $assignment->setDescription(trim($_REQUEST['description'])); } if (isset($_REQUEST['submission_visibility_applies_to_all']) && $_REQUEST['submission_visibility_applies_to_all'] == 'yes') { $assignment->visibilityModificationAppliesToOldSubmissions(true); $assignment->forceVisibilityChange(); } if (isset($_REQUEST['def_submission_visibility'])) { $assignment->setDefaultSubmissionVisibility($_REQUEST['def_submission_visibility']); } if (isset($_REQUEST['assignment_type'])) {