function duplicate($unit_id = '', $course_id = '')
{
global $wpdb;
if ($unit_id == '') {
$unit_id = $this->id;
}
/**
* Allow Unit duplication to be cancelled when filter returns true.
*
* @since 1.2.2
*/
if (apply_filters('coursepress_unit_cancel_duplicate', false, $unit_id)) {
/**
* Perform actions if the duplication was cancelled.
*
* @since 1.2.2
*/
do_action('coursepress_unit_duplicate_cancelled', $unit_id);
return false;
}
/* Duplicate course and change some data */
$new_unit = $this->get_unit();
$old_unit_id = $new_unit->ID;
unset($new_unit->ID);
unset($new_unit->guid);
$new_unit->post_author = get_current_user_id();
$new_unit->post_status = 'private';
$new_unit->post_parent = $course_id;
$new_unit_id = wp_insert_post($new_unit);
/*
* Duplicate unit post meta
*/
if (!empty($new_unit_id)) {
$post_metas = get_post_meta($old_unit_id);
foreach ($post_metas as $key => $meta_value) {
$value = array_pop($meta_value);
$value = maybe_unserialize($value);
update_post_meta($new_unit_id, $key, $value);
}
}
update_post_meta($new_unit_id, 'course_id', $course_id);
$unit_modules = $this->get_unit_modules($old_unit_id);
foreach ($unit_modules as $unit_module) {
$module = new Unit_Module($unit_module->ID);
$module->duplicate($unit_module->ID, $new_unit_id);
}
/**
* Perform action when the unit is duplicated.
*
* @since 1.2.2
*/
do_action('coursepress_unit_duplicated', $new_unit_id);
}
