public function save($post_data = null)
{
global $wpdb;
if (in_array($this->type, array('true_or_false', 'multi_choice', 'single_choice'))) {
$all_ids = array();
if (!empty($post_data['answer'])) {
foreach ($post_data['answer']['text'] as $index => $text) {
$answer_id = !empty($post_data['answer']['id'][$index]) ? $post_data['answer']['id'][$index] : 0;
$data = array('answer_data' => array('text' => stripslashes($text), 'value' => $post_data['answer']['value'][$index]), 'answer_order' => $index + 1, 'question_id' => $this->id);
if ($this->type == 'multi_choice') {
$data['answer_data']['is_true'] = is_array($checked = learn_press_get_request("learn_press_question_{$this->id}")) && in_array($post_data['answer']['value'][$index], $checked) ? 'yes' : 'no';
} else {
$data['answer_data']['is_true'] = $post_data['answer']['value'][$index] == learn_press_get_request("learn_press_question_{$this->id}") ? 'yes' : 'no';
}
$data = apply_filters('learn_press_question_answer_data', $data, $this);
$data['answer_data'] = maybe_serialize($data['answer_data']);
if ($answer_id) {
$wpdb->update($wpdb->learnpress_question_answers, $data, array('question_answer_id' => $answer_id), array('%s'));
$all_ids[] = $post_data['answer']['id'][$index];
} else {
$wpdb->insert($wpdb->learnpress_question_answers, $data, array('%s', '%d'));
$all_ids[] = $wpdb->insert_id;
}
}
}
if ($all_ids) {
$query = $wpdb->prepare("\n\t\t\t\t\tDELETE\n\t\t\t\t\tFROM {$wpdb->learnpress_question_answers}\n\t\t\t\t\tWHERE question_answer_id NOT IN(" . join(',', $all_ids) . ")\n\t\t\t\t\tAND question_id = %d\n\t\t\t\t", $this->id);
} else {
$query = $wpdb->prepare("\n\t\t\t\t\tDELETE\n\t\t\t\t\tFROM {$wpdb->learnpress_question_answers}\n\t\t\t\t\tWHERE question_id = %d\n\t\t\t\t", $this->id);
}
$wpdb->query($query);
}
do_action('learn_press_update_question_answer', $this);
}
/**
* __get function.
*
* @param string $key
*
* @return mixed
*/
public function __get($key)
{
if (empty($this->{$key})) {
$value = false;
switch ($key) {
case 'current_item':
$item_type = !empty($_REQUEST['course-item']) ? $_REQUEST['course-item'] : '';
if ($item_type) {
$item_id = ($item_id = learn_press_get_request("{$item_type}_id")) && $this->has('item', $item_id) ? $item_id : null;
if ($item_id) {
$value = $item_type == 'lesson' ? LP_Lesson::get_lesson($item_id) : LP_Quiz::get_quiz($item_id);
}
}
break;
case 'current_lesson':
$lesson_id = ($lesson_id = learn_press_get_request("lesson_id")) && $this->has('item', $lesson_id) ? $lesson_id : null;
if ($lesson_id) {
$value = LP_Lesson::get_lesson($lesson_id);
}
break;
case 'permalink':
$value = get_the_permalink($this->id);
break;
default:
// default is get course meta key
$value = get_post_meta($this->id, '_lp_' . $key, true);
}
if (!empty($value)) {
$this->{$key} = $value;
}
}
return !empty($this->{$key}) ? $this->{$key} : null;
}
static function hide_upgrade_notice()
{
$ask_again = learn_press_get_request('ask_again');
$expiration = DAY_IN_SECONDS;
if ($ask_again == 'no') {
$expiration = 0;
}
set_transient('learn_press_upgrade_courses_ask_again', $ask_again, $expiration);
learn_press_send_json(array('result' => 'success', 'message' => sprintf('<p>%s</p>', __('Thank for using LearnPress', 'learn_press'))));
}
function save_order($post_id)
{
global $action;
if (wp_is_post_revision($post_id)) {
return;
}
if ($action == 'editpost' && get_post_type($post_id) == 'lp_order') {
remove_action('save_post', array($this, 'save_order'));
$order_statuses = learn_press_get_order_statuses();
$order_statuses = array_keys($order_statuses);
$status = learn_press_get_request('order-status');
if (!in_array($status, $order_statuses)) {
$status = reset($order_statuses);
}
$order = learn_press_get_order($post_id);
$order->update_status($status);
$user_id = learn_press_get_request('order-customer');
//$postdata = array( 'post_status' => $status, 'ID' => $post_id );
///wp_update_post( $postdata );
update_post_meta($post_id, '_user_id', $user_id > 0 ? $user_id : 0);
}
}
static function save()
{
global $wpdb, $post;
$questions = learn_press_get_request('learn_press_question');
if ($all_questions = LP_Quiz::get_quiz($post->ID)->get_questions()) {
$all_questions = array_keys($all_questions);
}
// remove questions if it has removed from $_POST
if ($all_questions && $questions && ($remove_ids = array_diff($all_questions, array_keys($questions)))) {
$query = $wpdb->prepare("\n\t\t\t\t\tDELETE\n\t\t\t\t\tFROM {$wpdb->learnpress_quiz_questions}\n\t\t\t\t\tWHERE quiz_id = %d\n\t\t\t\t\tAND question_id IN(" . join(',', $remove_ids) . ")\n\t\t\t\t", $post->ID);
$wpdb->query($query);
do_action('learn_press_remove_quiz_questions', $remove_ids, $post->ID);
}
if (!$questions) {
return;
}
$titles = learn_press_get_request('learn-press-question-name');
// update the title of questions and save all data
foreach ($questions as $id => $data) {
$question = LP_Question_Factory::get_question($id);
if (!empty($titles[$id])) {
$wpdb->update($wpdb->posts, array('post_title' => $titles[$id]), array('ID' => $id), array('%s'));
}
$question->save($data);
}
// if there are new questions then insert into quiz
if ($new_ids = array_diff(array_keys($questions), $all_questions)) {
$values = array();
foreach ($new_ids as $id) {
$insert_data = apply_filters('learn_press_quiz_question_insert_data', array('question_id' => $id, 'quiz_id' => $post->ID, 'params' => ''));
$values[] = $wpdb->prepare("(%d, %d, %s)", $insert_data['quiz_id'], $insert_data['question_id'], $insert_data['param']);
}
$query = "\n\t\t\t\t\tINSERT INTO {$wpdb->learnpress_quiz_questions}(`quiz_id`, `question_id`, `params`)\n\t\t\t\t\tVALUES " . join(',', $values) . "\n\t\t\t\t";
$wpdb->query($query);
do_action('learn_press_insert_quiz_questions', $new_ids, $post->ID);
}
}
function review_log($new_status, $old_status, $course_id)
{
global $wpdb, $post;
$required_review = LP()->settings->get('required_review') == 'yes';
$enable_edit_published = LP()->settings->get('enable_edit_published') == 'yes';
if (!$required_review || $required_review && $enable_edit_published) {
return;
}
$user = learn_press_get_current_user();
$message = learn_press_get_request('review_message');
if (LP()->user->is_instructor() && $required_review && !$enable_edit_published) {
remove_action('rwmb_course_curriculum_before_save_post', array($this, 'before_save_curriculum'));
wp_update_post(array('ID' => $post->ID, 'post_status' => 'pending'), array('%d', '%s'));
add_action('rwmb_course_curriculum_before_save_post', array($this, 'before_save_curriculum'));
}
if (!$message && !$user->is_instructor() && get_post_status($post->ID) == 'publish') {
$message = __('Your course has published', 'learn_press');
}
if (apply_filters('learn_press_review_log_message', $message, $post->ID, $user->id)) {
$query = $wpdb->prepare("\n\t\t\t\t\tINSERT INTO {$wpdb->learnpress_review_logs}(`course_id`, `user_id`, `message`, `date`, `status`, `user_type`)\n\t\t\t\t\tVALUES(%d, %d, %s, %s, %s, %s)\n\t\t\t\t", $post->ID, $user->id, $message, current_time('mysql'), get_post_status($post->ID), $user->is_instructor() ? 'instructor' : 'reviewer');
$wpdb->query($query);
do_action('learn_press_update_review_log', $wpdb->insert_id, $post->ID, $user->id);
}
}
/**
* @param $join
*
* @return string
*/
function posts_join_paged($join)
{
if (!is_admin()) {
return $join;
}
global $pagenow;
if ($pagenow != 'edit.php') {
return $join;
}
global $post_type;
if (LP()->question_post_type != $post_type) {
return $join;
}
global $wpdb;
if ($quiz_id = learn_press_get_request('filter_quiz')) {
$join .= " INNER JOIN {$wpdb->prefix}learnpress_quiz_questions qq ON qq.question_id = {$wpdb->posts}.ID AND qq.quiz_id = " . $quiz_id;
}
return $join;
}
/**
* Retake a quiz
*/
public static function retake_quiz()
{
$quiz_id = learn_press_get_request('quiz_id');
$user_id = learn_press_get_current_user_id();
$response = array();
if (!learn_press_user_can_retake_quiz($quiz_id, $user_id)) {
$response['message'] = __('Sorry! You can not retake this quiz', 'learn_press');
$response['error'] = true;
} else {
//lpr_reset_quiz_answer($quiz_id);
learn_press_reset_user_quiz($user_id, $quiz_id);
add_user_meta($user_id, '_lpr_quiz_taken', $quiz_id);
$response = array('retake' => true, 'redirect' => get_the_permalink($quiz_id));
do_action('learn_press_user_retake_quiz', $quiz_id, $user_id);
}
learn_press_send_json($response);
}
/**
* Display content for custom column
*
* @param string $name
* @param int $post_id
*/
function columns_content($name, $post_id)
{
switch ($name) {
case LP()->course_post_type:
$courses = learn_press_get_item_courses($post_id);
if ($courses) {
foreach ($courses as $course) {
echo '<div><a href="' . esc_url(add_query_arg(array('filter_course' => $course->ID))) . '">' . get_the_title($course->ID) . '</a>';
echo '<div class="row-actions">';
printf('<a href="%s">%s</a>', admin_url(sprintf('post.php?post=%d&action=edit', $course->ID)), __('Edit', 'learn_press'));
echo " | ";
printf('<a href="%s">%s</a>', get_the_permalink($course->ID), __('View', 'learn_press'));
echo " | ";
if ($course_id = learn_press_get_request('filter_course')) {
printf('<a href="%s">%s</a>', remove_query_arg('filter_course'), __('Remove Filter', 'learn_press'));
} else {
printf('<a href="%s">%s</a>', add_query_arg('filter_course', $course->ID), __('Filter', 'learn_press'));
}
echo '</div></div>';
}
} else {
_e('Not assigned yet', 'learn_press');
}
break;
case 'is_previewable':
printf('<input type="checkbox" class="learn-press-checkbox learn-press-toggle-lesson-preview" %s value="%s" data-nonce="%s" />', get_post_meta($post_id, '_lp_is_previewable', true) == 'yes' ? ' checked="checked"' : '', $post_id, wp_create_nonce('learn-press-toggle-lesson-preview'));
break;
case 'format':
learn_press_item_meta_format($post_id, __('Standard', 'learn_press'));
}
}
/**
* Complete lesson
*/
public static function complete_lesson()
{
$nonce = learn_press_get_request('nonce');
$item_id = learn_press_get_request('id');
$post = get_post($item_id);
if (!$post || $post && !wp_verify_nonce($nonce, sprintf('learn-press-complete-%s-%d', $post->post_type, $post->ID))) {
throw new Exception(__('Error ', 'learn_press'));
}
$user = learn_press_get_current_user();
$response = array('result' => 'error');
if ($user->complete_lesson($item_id)) {
ob_start();
learn_press_display_message(__('Congratulations! You have completed this lesson.', 'learn_press'));
$response['message'] = ob_get_clean();
$response['result'] = 'success';
}
learn_press_send_json($response);
die;
global $post;
$user_id = get_current_user_id();
$lesson_id = !empty($_POST['lesson']) ? $_POST['lesson'] : 0;
if (!$user_id || !$lesson_id) {
wp_die(__('Access denied!', 'learn_press'));
}
$response = array();
if (learn_press_mark_lesson_complete($lesson_id, $user_id)) {
$course_id = learn_press_get_course_by_lesson($lesson_id);
$lessons = learn_press_get_lessons_in_course($course_id);
$lesson_completed = get_user_meta($user_id, '_lpr_lesson_completed', true);
$lesson_completed = !empty($lesson_completed[$course_id]) ? $lesson_completed[$course_id] : array();
if ($lessons) {
if (false !== ($pos = array_search($lesson_id, $lessons))) {
$loop = $pos == count($lessons) - 1 ? 0 : $pos + 1;
$infinite = 0;
$max = count($lessons);
while (in_array($lessons[$loop], $lesson_completed) && $lessons[$loop] != $lesson_id) {
$loop++;
if ($loop == $max) {
$loop = 0;
}
if ($infinite > $max) {
break;
}
}
if ($lessons[$loop] != $lesson_id) {
$response['url'] = learn_press_get_course_lesson_permalink($lessons[$loop], $course_id);
} else {
$response['url'] = learn_press_get_course_lesson_permalink($lesson_id, $course_id);
}
}
}
}
learn_press_send_json($response);
die;
}
/**
* __get function.
*
* @param string $key
*
* @return mixed
*/
public function __get($key)
{
if (isset($this->{$key})) {
return $this->{$key};
}
$value = null;
switch ($key) {
case 'current_question':
if (($question = learn_press_get_request('question')) && is_quiz()) {
$value = LP_Question_Factory::get_question($question);
}
break;
case 'questions':
$value = $this->get_questions();
break;
default:
if (strpos($key, '_lp_') === false) {
$key = '_lp_' . $key;
}
$value = get_post_meta($this->id, $key, true);
if ($key == '_lp_duration') {
$value = absint($value) * 60;
}
}
if (!empty($value)) {
$this->{$key} = $value;
}
return $value;
}
/**
* @param int
* @param int - since 0.9.5
*
* @return bool|int
*/
function learn_press_get_current_question($quiz_id = null, $user_id = 0)
{
$quiz_id = learn_press_get_quiz_id($quiz_id);
if (!$user_id) {
$user_id = get_current_user_id();
}
if (!$quiz_id) {
return false;
}
if ($question_id = learn_press_get_request('question')) {
} else {
$questions = get_user_meta($user_id, '_lpr_quiz_current_question', true);
if (!empty($questions) && !empty($questions[$quiz_id])) {
$question_id = $questions[$quiz_id];
} else {
$questions = (array) learn_press_get_user_quiz_questions($quiz_id, $user_id);
$question_id = reset($questions);
}
}
// ver 0.9.5
$question_id = apply_filters('learn_press_get_current_question', $question_id, $quiz_id, $user_id);
return $question_id;
}
static function save($new, $old, $post_id, $field)
{
global $wpdb, $post;
//LP_Debug::instance()->add( __CLASS__ . '::' . __FUNCTION__ . '(' . join( ',', func_get_args() ) . ')' );
$questions = learn_press_get_request('learn_press_question');
/*if( $all_questions = LP_Quiz::get_quiz( $post->ID )->get_questions() ){
$all_questions = array_keys( $all_questions );
}*/
// Get all ids of questions stored
$remove_ids = $wpdb->get_col($wpdb->prepare("\n\t\t\t\t\tSELECT question_id\n\t\t\t\t\tFROM {$wpdb->prefix}learnpress_quiz_questions\n\t\t\t\t\tWHERE quiz_id = %d\n\t\t\t\t", $post->ID));
// delete all questions stored
$query = $wpdb->prepare("\n\t\t\t\tDELETE\n\t\t\t\tFROM {$wpdb->prefix}learnpress_quiz_questions\n\t\t\t\tWHERE quiz_id = %d\n\t\t\t", $post->ID, 1);
$wpdb->query($query);
learn_press_reset_auto_increment('learnpress_quiz_questions');
do_action('learn_press_remove_quiz_questions', $remove_ids, $post->ID);
if (!$questions) {
return;
}
$titles = learn_press_get_request('learn-press-question-name');
$values = array();
$order = 1;
// update the title of questions and save all data
foreach ($questions as $id => $data) {
$question = LP_Question_Factory::get_question($id);
if (!empty($titles[$id])) {
$wpdb->update($wpdb->posts, array('post_title' => $titles[$id]), array('ID' => $id), array('%s'));
}
$question->save($data);
$insert_data = apply_filters('learn_press_quiz_question_insert_data', array('question_id' => $id, 'quiz_id' => $post->ID, 'params' => ''));
$values[] = $wpdb->prepare("(%d, %d, %s, %d)", $insert_data['quiz_id'], $insert_data['question_id'], $insert_data['param'], $order++);
}
$query = "\n\t\t\t\tINSERT INTO {$wpdb->learnpress_quiz_questions}(`quiz_id`, `question_id`, `params`, `question_order`)\n\t\t\t\tVALUES " . join(',', $values) . "\n\t\t\t";
$wpdb->query($query);
do_action('learn_press_insert_quiz_questions', $questions, $post->ID);
}
/**
* Displaying the content of extra columns
*
* @param $name
* @param $post_id
*/
function columns_content($name, $post_id)
{
switch ($name) {
case LP()->quiz_post_type:
$quizzes = learn_press_get_question_quizzes($post_id);
if ($quizzes) {
foreach ($quizzes as $quiz) {
echo '<div><a href="' . esc_url(add_query_arg(array('filter_quiz' => $quiz->ID))) . '">' . get_the_title($quiz->ID) . '</a>';
echo '<div class="row-actions">';
printf('<a href="%s">%s</a>', admin_url(sprintf('post.php?post=%d&action=edit', $quiz->ID)), __('Edit', 'learn_press'));
echo " | ";
printf('<a href="%s">%s</a>', get_the_permalink($quiz->ID), __('View', 'learn_press'));
echo " | ";
if ($quiz_id = learn_press_get_request('filter_quiz')) {
printf('<a href="%s">%s</a>', remove_query_arg('filter_quiz'), __('Remove Filter', 'learn_press'));
} else {
printf('<a href="%s">%s</a>', add_query_arg('filter_quiz', $quiz->ID), __('Filter', 'learn_press'));
}
echo '</div></div>';
}
} else {
_e('Not assigned yet', 'learn_press');
}
break;
case 'type':
echo learn_press_question_name_from_slug(get_post_meta($post_id, '_lp_type', true));
}
}
public static function convert_question_type()
{
if (($from = learn_press_get_request('from')) && ($to = learn_press_get_request('to')) && ($question_id = learn_press_get_request('question_id'))) {
$data = array();
parse_str($_POST['data'], $data);
do_action('learn_press_convert_question_type', $question_id, $from, $to, $data);
$question = LP_Question_Factory::get_question($question_id, array('type' => $to));
learn_press_send_json(array('html' => $question->admin_interface(array('echo' => false)), 'icon' => $question->get_icon()));
} else {
throw new Exception(__('Convert question type must be specify the id, source and destination type', 'learn_press'));
}
die;
}
/**
* Redirect to question if user access to a quiz that user has started
*
* @param string
*
* @return string
*/
function learn_press_redirect_to_question($template)
{
global $post_type;
if (is_single() && $post_type == LP()->quiz_post_type) {
$user = learn_press_get_current_user();
$quiz_id = get_the_ID();
$quiz_status = $user->get_quiz_status($quiz_id);
if ($quiz_status == 'started' && learn_press_get_quiz_time_remaining($user->id, $quiz_id) == 0 && get_post_meta($quiz_id, '_lpr_duration', true)) {
$user->finish_quiz($quiz_id);
$quiz_status = 'completed';
}
if (learn_press_get_request('question') && $quiz_status == '') {
wp_redirect(get_the_permalink($quiz_id));
} elseif ($quiz_status == 'started') {
if (learn_press_get_request('question')) {
} else {
wp_redirect(learn_press_get_user_question_url($quiz_id));
die;
}
} elseif ($quiz_status == 'completed' && learn_press_get_request('question')) {
wp_redirect(get_the_permalink($quiz_id));
die;
}
}
return $template;
}
function learn_press_add_ons_content_tab_bundle_activate($current)
{
$add_ons = learn_press_get_add_ons_from_wp(array('transient_key' => 'lp_ba_add_ons', 'include' => learn_press_get_bundle_activate_add_ons(), 'force' => wp_verify_nonce(learn_press_get_request('check'), 'check_bundle_activate')));
$time = get_option('_transient_timeout_lp_ba_add_ons');
$description = __('All add-ons that provide basic features for your LMS site.', 'learn_press');
$description .= ' ' . sprintf(__('Last checked %s ago'), human_time_diff($time - LP_ADD_ON_TRANSIENT_TIME));
$description .= ' ' . sprintf(__('<a href="%s">%s</a>'), admin_url('admin.php?page=learn_press_add_ons&tab=bundle_activate&check=' . wp_create_nonce('check_bundle_activate')), __('Check again!', 'learn_press'));
learn_press_add_on_tab_description($description);
learn_press_output_add_ons_list($add_ons, $current);
}
/**
* @param $join
*
* @return string
*/
function posts_join_paged($join)
{
if (!is_admin()) {
return $join;
}
global $pagenow;
if ($pagenow != 'edit.php') {
return $join;
}
global $post_type;
if (LP()->lesson_post_type != $post_type) {
return $join;
}
global $wpdb;
if ($course_id = learn_press_get_request('filter_course')) {
$join .= " INNER JOIN {$wpdb->prefix}learnpress_section_items si ON si.item_id = {$wpdb->posts}.ID";
$join .= " INNER JOIN {$wpdb->prefix}learnpress_sections s ON s.section_id = si.section_id AND s.section_course_id = " . $course_id;
}
return $join;
}
private function _review_log()
{
global $wpdb, $post;
$action = '';
// Course is submitted by instructor
if (learn_press_get_request('learn_press_submit_course_notice_reviewer') == 'yes') {
$action = 'learn_press_course_submit_for_reviewer';
} elseif (learn_press_get_request('learn_press_submit_course_notice_instructor') == 'yes') {
$action = 'learn_press_course_submit_for_instructor';
}
if (!$action) {
return;
}
/*if ( !$required_review || ( $required_review && $enable_edit_published ) ) {
return;
}*/
$user = LP()->user;
$message = learn_press_get_request('review_message');
if (!$message && !$user->is_instructor() && get_post_status($post->ID) == 'publish') {
$message = __('Your course has published', 'learn_press');
}
if (apply_filters('learn_press_review_log_message', $message, $post->ID, $user->id)) {
$query = $wpdb->prepare("\n\t\t\t\t\tINSERT INTO {$wpdb->learnpress_review_logs}(`course_id`, `user_id`, `message`, `date`, `status`, `user_type`)\n\t\t\t\t\tVALUES(%d, %d, %s, %s, %s, %s)\n\t\t\t\t", $post->ID, $user->id, $message, current_time('mysql'), get_post_status($post->ID), $user->is_instructor() ? 'instructor' : 'reviewer');
$wpdb->query($query);
do_action('learn_press_update_review_log', $wpdb->insert_id, $post->ID, $user->id);
}
if ($action == 'learn_press_course_submit_for_instructor') {
if (get_post_status($post->ID) == 'publish') {
do_action('learn_press_course_submit_approved', $post->ID, $user);
} else {
do_action('learn_press_course_submit_rejected', $post->ID, $user);
}
} else {
do_action($action, $post->ID, $user);
}
}