public function process_grading()
{
// NEEDS REFACTOR/OPTIMISING, such as combining the various meta data stored against the sensei_user_answer entry
if (isset($_POST['sensei_manual_grade']) && isset($_GET['quiz_id'])) {
// error_log( __CLASS__ . ':' . __FUNCTION__ . ':' . print_r($_POST, true));
$quiz_id = $_GET['quiz_id'];
$user_id = $_GET['user'];
$verify_nonce = wp_verify_nonce($_POST['_wp_sensei_manual_grading_nonce'], 'sensei_manual_grading');
if ($verify_nonce && $quiz_id == $_POST['sensei_manual_grade']) {
$questions = WooThemes_Sensei_Utils::sensei_get_quiz_questions($quiz_id);
$quiz_grade = 0;
$count = 0;
$quiz_grade_total = $_POST['quiz_grade_total'];
foreach ($questions as $question) {
++$count;
$question_id = $question->ID;
if (isset($_POST['question_' . $question_id])) {
$correct = false;
$question_grade = 0;
$question_total_grade = $_POST['question_total_grade'];
if ($_POST['question_' . $question_id] == 'right') {
$correct = true;
$question_grade = $_POST['question_' . $question_id . '_grade'];
}
$activity_logged = WooThemes_Sensei_Utils::sensei_grade_question($question_id, $question_grade, $user_id);
$quiz_grade += $question_grade;
} else {
WooThemes_Sensei_Utils::sensei_delete_question_grade($question_id);
}
// WP slashes all incoming data regardless of Magic Quotes setting (see wp_magic_quotes()), but
// as an answer note is not direct post_content it won't have slashes removed, so we need to do it
$answer_notes = wp_unslash($_POST['question_' . $question_id . '_notes']);
if (!$answer_notes || $answer_notes == '') {
$answer_notes = '';
}
WooThemes_Sensei_Utils::sensei_add_answer_notes($question_id, $user_id, $answer_notes);
}
if ($_POST['all_questions_graded'] == 'yes') {
$grade = abs(round(doubleval($quiz_grade) * 100 / $quiz_grade_total, 2));
$activity_logged = WooThemes_Sensei_Utils::sensei_grade_quiz($quiz_id, $grade, $user_id);
// Duplicating what Frontend->sensei_complete_quiz() does
$quiz_lesson_id = absint(get_post_meta($quiz_id, '_quiz_lesson', true));
$pass_required = get_post_meta($quiz_id, '_pass_required', true);
$quiz_passmark = abs(round(doubleval(get_post_meta($quiz_id, '_quiz_passmark', true)), 2));
$lesson_metadata = array();
if ($pass_required) {
// Student has reached the pass mark and lesson is complete
if ($quiz_passmark <= $grade) {
$lesson_status = 'passed';
} else {
$lesson_status = 'failed';
}
// End If Statement
} else {
$lesson_status = 'graded';
}
$lesson_metadata['grade'] = $grade;
// Technically already set as part of "WooThemes_Sensei_Utils::sensei_grade_quiz()" above
WooThemes_Sensei_Utils::update_lesson_status($user_id, $quiz_lesson_id, $lesson_status, $lesson_metadata);
switch ($lesson_status) {
case 'passed':
case 'graded':
do_action('sensei_user_lesson_end', $user_id, $quiz_lesson_id);
break;
}
}
if (isset($_POST['sensei_grade_next_learner']) && strlen($_POST['sensei_grade_next_learner']) > 0) {
$load_url = add_query_arg(array('message' => 'graded'));
} elseif (isset($_POST['_wp_http_referer'])) {
$load_url = add_query_arg(array('message' => 'graded'), $_POST['_wp_http_referer']);
} else {
$load_url = add_query_arg(array('message' => 'graded'));
}
wp_safe_redirect($load_url);
exit;
}
}
}
