/**
* Function called when user is requesting a retake of a quiz. Lots of checking
* needs to go on here for security reasons to ensure that they don't manipulate
* their own progress (or somebody elses).
*/
function WPCW_AJAX_units_handleQuizRetakeRequest()
{
// Security check
if (!wp_verify_nonce(WPCW_arrays_getValue($_POST, 'progress_nonce'), 'wpcw-progress-nonce')) {
die(__('Security check failed!', 'wp_courseware'));
}
// Get unit and quiz ID
$unitID = intval(WPCW_arrays_getValue($_POST, 'unitid'));
$quizID = intval(WPCW_arrays_getValue($_POST, 'quizid'));
// Get the post object for this quiz item.
$post = get_post($unitID);
if (!$post) {
echo WPCW_UnitFrontend::message_createMessage_error(__('Error - could not request a retake for the quiz.', 'wp_courseware') . ' ' . __('Could not find training unit.', 'wp_courseware'));
die;
}
// Initalise the unit details
$fe = new WPCW_UnitFrontend($post);
// #### Get associated data for this unit. No course/module data, then it's not a unit
if (!$fe->check_unit_doesUnitHaveParentData()) {
echo WPCW_UnitFrontend::message_createMessage_error(__('Error - could not request a retake for the quiz.', 'wp_courseware') . ' ' . __('Could not find course details for unit.', 'wp_courseware'));
die;
}
// #### User not allowed access to content
if (!$fe->check_user_canUserAccessCourse()) {
echo $fe->message_user_cannotAccessCourse();
die;
}
// #### See if we're in a position to retake this quiz?
if (!$fe->check_quizzes_canUserRequestRetake()) {
echo WPCW_UnitFrontend::message_createMessage_error(__('Error - could not request a retake for the quiz.', 'wp_courseware') . ' ' . __('You are not permitted to retake this quiz.', 'wp_courseware'));
die;
}
// Trigger the upgrade to progress so that we're allowed to retake this quiz.
$fe->update_quizzes_requestQuizRetake();
// Only complete if allowed to continue.
echo $fe->render_detailsForUnit(false, true);
die;
}
