public function sensei_complete_quiz()
{
global $post, $woothemes_sensei, $current_user;
// Default grade
$grade = 0;
// Get Quiz Questions
$lesson_quiz_questions = $woothemes_sensei->post_types->lesson->lesson_quiz_questions($post->ID);
$quiz_lesson_id = absint(get_post_meta($post->ID, '_quiz_lesson', true));
// Get quiz grade type
$quiz_grade_type = get_post_meta($post->ID, '_quiz_grade_type', true);
// Get quiz pass setting
$pass_required = get_post_meta($post->ID, '_pass_required', true);
// Get quiz pass mark
$quiz_passmark = abs(round(doubleval(get_post_meta($post->ID, '_quiz_passmark', true)), 2));
// Handle Quiz Completion
if (isset($_POST['quiz_complete']) && wp_verify_nonce($_POST['woothemes_sensei_complete_quiz_noonce'], 'woothemes_sensei_complete_quiz_noonce')) {
$sanitized_submit = esc_html($_POST['quiz_complete']);
$questions_asked = array_filter(array_map('absint', $_POST['questions_asked']));
$questions_asked_string = implode(',', $questions_asked);
switch ($sanitized_submit) {
case apply_filters('sensei_complete_quiz_text', __('Complete Quiz', 'woothemes-sensei')):
// Mark the Lesson as in-progress (if it isn't already), the entry is needed for WooThemes_Sensei_Utils::sensei_grade_quiz_auto() (optimise at some point?)
$activity_logged = WooThemes_Sensei_Utils::sensei_start_lesson($quiz_lesson_id);
$lesson_status = 'ungraded';
// Default when completing a quiz
// Save questions that were asked in this quiz
if (!empty($questions_asked_string)) {
update_comment_meta($activity_logged, 'questions_asked', $questions_asked_string);
}
// Save Quiz Answers
if (isset($_POST['sensei_question'])) {
WooThemes_Sensei_Utils::sensei_save_quiz_answers($_POST['sensei_question']);
}
// Grade quiz
// 3rd arg is count of total number of questions but it's not used by sensei_grade_quiz_auto()
$grade = WooThemes_Sensei_Utils::sensei_grade_quiz_auto($post->ID, $_POST['sensei_question'], count($lesson_quiz_questions), $quiz_grade_type);
$lesson_metadata = array();
// Get Lesson Grading Setting
if (is_wp_error($grade) || 'auto' != $quiz_grade_type) {
$lesson_status = 'ungraded';
// Quiz is manually graded and this was a user submission
} else {
// Quiz has been automatically Graded
if ($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'] = $grade;
// Technically already set as part of "WooThemes_Sensei_Utils::sensei_grade_quiz_auto()" above
}
WooThemes_Sensei_Utils::update_lesson_status($current_user->ID, $quiz_lesson_id, $lesson_status, $lesson_metadata);
switch ($lesson_status) {
case 'passed':
case 'graded':
do_action('sensei_user_lesson_end', $current_user->ID, $quiz_lesson_id);
break;
}
do_action('sensei_user_quiz_submitted', $current_user->ID, $post->ID, $grade, $quiz_passmark, $quiz_grade_type);
break;
case apply_filters('sensei_save_quiz_text', __('Save Quiz', 'woothemes-sensei')):
$activity_logged = WooThemes_Sensei_Utils::sensei_start_lesson($quiz_lesson_id);
if ($activity_logged) {
// Save questions that were asked in this quiz
if (!empty($questions_asked_string)) {
update_comment_meta($activity_logged, 'questions_asked', $questions_asked_string);
}
if (isset($_POST['sensei_question'])) {
WooThemes_Sensei_Utils::sensei_save_quiz_answers($_POST['sensei_question']);
}
}
// Need message in case the data wasn't saved?
$this->messages = '<div class="sensei-message note">' . apply_filters('sensei_quiz_saved_text', __('Quiz Saved Successfully.', 'woothemes-sensei')) . '</div>';
break;
case apply_filters('sensei_reset_quiz_text', __('Reset Quiz', 'woothemes-sensei')):
// Don't want to remove the lesson status (such as start meta data etc), just remove the answers, the questions asked meta and any grade meta
// Delete quiz answers, this auto deletes the corresponding meta data, such as the question/answer grade
WooThemes_Sensei_Utils::sensei_delete_quiz_answers($post->ID, $user_id);
WooThemes_Sensei_Utils::update_lesson_status($current_user->ID, $quiz_lesson_id, 'in-progress', array('questions_asked' => '', 'grade' => ''));
// Run any action on quiz/lesson reset (previously this didn't occur on resetting a quiz, see resetting a lesson in sensei_complete_lesson()
do_action('sensei_user_lesson_reset', $current_user->ID, $quiz_lesson_id);
$this->messages = '<div class="sensei-message note">' . apply_filters('sensei_quiz_reset_text', __('Quiz Reset Successfully.', 'woothemes-sensei')) . '</div>';
break;
default:
// Nothing
break;
}
// End Switch Statement
// Refresh page to avoid re-posting
?>
<script type="text/javascript"> window.location = '<?php
echo get_permalink($post->ID);
?>
'; </script>
<?php
}
// End If Statement, submission of quiz
$this->data = new stdClass();
// Get latest quiz answers and grades
$user_quizzes = $this->sensei_get_user_quiz_answers($post->ID);
$user_lesson_status = WooThemes_Sensei_Utils::user_lesson_status($quiz_lesson_id, $current_user->ID);
$user_quiz_grade = 0;
if (isset($user_lesson_status->comment_ID)) {
$user_quiz_grade = get_comment_meta($user_lesson_status->comment_ID, 'grade', true);
}
if (!is_array($user_quizzes)) {
$user_quizzes = array();
}
// Check again that the lesson is complete
$user_lesson_end = WooThemes_Sensei_Utils::user_completed_lesson($user_lesson_status);
$user_lesson_complete = false;
if ($user_lesson_end) {
$user_lesson_complete = true;
}
// End If Statement
$reset_allowed = get_post_meta($post->ID, '_enable_quiz_reset', true);
// Build frontend data object
$this->data->user_quizzes = $user_quizzes;
$this->data->user_quiz_grade = $user_quiz_grade;
$this->data->quiz_passmark = $quiz_passmark;
$this->data->quiz_lesson = $quiz_lesson_id;
$this->data->quiz_grade_type = $quiz_grade_type;
$this->data->user_lesson_end = $user_lesson_end;
$this->data->user_lesson_complete = $user_lesson_complete;
$this->data->lesson_quiz_questions = $lesson_quiz_questions;
$this->data->reset_quiz_allowed = $reset_allowed;
}
/**
* Submit the users quiz answers for grading
*
* This function accepts users answers and stores it but also initiates the grading
* if a quiz can be graded automatically it will, if not the answers can be graded by the teacher.
*
* @since 1.7.4
* @access public
*
* @param array $quiz_answers
* @param array $files from $_FILES
* @param int $user_id
* @param int $lesson_id
*
* @return bool $answers_submitted
*/
public static function submit_answers_for_grading($quiz_answers, $files = array(), $lesson_id, $user_id = 0)
{
$answers_submitted = false;
// get the user_id if none was passed in use the current logged in user
if (!intval($user_id) > 0) {
$user_id = get_current_user_id();
}
// make sure the parameters are valid before continuing
if (empty($lesson_id) || empty($user_id) || 'lesson' != get_post_type($lesson_id) || !get_userdata($user_id) || !is_array($quiz_answers)) {
return false;
}
global $post, $woothemes_sensei;
// Default grade
$grade = 0;
// Get Quiz ID
$quiz_id = $woothemes_sensei->lesson->lesson_quizzes($lesson_id);
// Get quiz grade type
$quiz_grade_type = get_post_meta($quiz_id, '_quiz_grade_type', true);
// Get quiz pass setting
$pass_required = get_post_meta($quiz_id, '_pass_required', true);
// Get the minimum percentage need to pass this quiz
$quiz_pass_percentage = abs(round(doubleval(get_post_meta($quiz_id, '_quiz_passmark', true)), 2));
// Handle Quiz Completion submit for grading
if (isset($_POST['questions_asked']) && is_array($_POST['questions_asked'])) {
$questions_asked = array_filter(array_map('absint', $_POST['questions_asked']));
} else {
$questions_asked = array_keys($quiz_answers);
}
$questions_asked_string = implode(',', $questions_asked);
// Save Quiz Answers for grading, the save function also calls the sensei_start_lesson
self::save_user_answers($quiz_answers, $files, $lesson_id, $user_id);
// Save questions that were asked in this quiz
$user_lesson_status = WooThemes_Sensei_Utils::user_lesson_status($lesson_id, $user_id);
if (isset($user_lesson_status->comment_ID)) {
update_comment_meta($user_lesson_status->comment_ID, 'questions_asked', $questions_asked_string);
}
// Grade quiz
$grade = WooThemes_Sensei_Utils::sensei_grade_quiz_auto($quiz_id, $quiz_answers, 0, $quiz_grade_type);
// Get Lesson Grading Setting
$lesson_metadata = array();
$lesson_status = 'ungraded';
// Default when completing a quiz
// At this point the answers have been submitted
$answers_submitted = true;
// if this condition is false the quiz should manually be graded by admin
if ('auto' == $quiz_grade_type && !is_wp_error($grade)) {
// Quiz has been automatically Graded
if ('on' == $pass_required) {
// Student has reached the pass mark and lesson is complete
if ($quiz_pass_percentage <= $grade) {
$lesson_status = 'passed';
} else {
$lesson_status = 'failed';
}
// End If Statement
} else {
// Student only has to partake the quiz
$lesson_status = 'graded';
}
$lesson_metadata['grade'] = $grade;
// Technically already set as part of "WooThemes_Sensei_Utils::sensei_grade_quiz_auto()" above
}
// end if ! is_wp_error( $grade ...
WooThemes_Sensei_Utils::update_lesson_status($user_id, $lesson_id, $lesson_status, $lesson_metadata);
if ('passed' == $lesson_status || 'graded' == $lesson_status) {
/**
* Lesson end action hook
*
* This hook is fired after a lesson quiz has been graded and the lesson status is 'passed' OR 'graded'
*
* @param int $user_id
* @param int $lesson_id
*/
do_action('sensei_user_lesson_end', $user_id, $lesson_id);
}
/**
* User quiz has been submitted
*
* Fires the end of the submit_answers_for_grading function. It will fire irrespective of the submission
* results.
*
* @param int $user_id
* @param int $quiz_id
* @param string $grade
* @param string $quiz_pass_percentage
* @param string $quiz_grade_type
*/
do_action('sensei_user_quiz_submitted', $user_id, $quiz_id, $grade, $quiz_pass_percentage, $quiz_grade_type);
return $answers_submitted;
}
