class-learndash-admin-topic-cloning.php
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<?php
/**
* LearnDash Admin Topic Cloning.
*
* @since 4.2.0
* @package LearnDash
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( class_exists( 'LearnDash_Admin_Cloning' ) && ! class_exists( 'Learndash_Admin_Topic_Cloning' ) ) {
/**
* Class LearnDash Admin Topic Cloning.
*
* @since 4.2.0
*/
class Learndash_Admin_Topic_Cloning extends Learndash_Admin_Cloning {
/**
* Returns the post type slug for cloning.
*
* @since 4.2.0
*
* @return string The Topic post type slug.
*/
public function get_cloning_object(): string {
return 'topic';
}
/**
* Forces the cloning of the topic immediately.
* Topic cloning is fast and does not require a cron job.
*
* @since 4.2.0
*
* @param WP_Post $ld_object The LearnDash WP_Post object.
*
* @return boolean
*/
protected function run_clone_immediately( WP_Post $ld_object ): bool {
return true;
}
/**
* Clones the Topic.
*
* @since 4.2.0
*
* @param WP_Post $ld_object The LearnDash WP_Post topic.
* @param array $args The copy arguments.
*
* @return int The new topic ID.
*/
public function clone( WP_Post $ld_object, array $args = array() ) {
// creating the new topic post.
$new_topic_id = $this->clone_post_fully( $ld_object, $args );
// update the topic meta according to the LD logic.
$this->course_meta_updates( $ld_object, $new_topic_id, $args );
return $new_topic_id;
}
/**
* Updates the topic meta according to the LD logic.
*
* @since 4.2.0
*
* @param WP_Post $topic The topic object.
* @param int $new_topic_id The new topic ID.
* @param array $args The copy arguments.
*
* @return void
*/
private function course_meta_updates( WP_Post $topic, int $new_topic_id, array $args ): void {
$topic_meta = get_post_meta( $topic->ID );
if ( is_array( $topic_meta ) ) {
foreach ( $topic_meta as $meta_key => $meta_value ) {
// topic settings meta.
if ( '_sfwd-topic' === $meta_key ) {
$topic_settings = maybe_unserialize( $meta_value[0] );
if ( isset( $topic_settings['sfwd-topic_course'] ) ) {
$topic_settings['sfwd-topic_course'] = ! empty( $args['new_course_id'] ) ? $args['new_course_id'] : 0;
}
if ( isset( $topic_settings['sfwd-topic_lesson'] ) ) {
$topic_settings['sfwd-topic_lesson'] = ! empty( $args['new_lesson_id'] ) ? $args['new_lesson_id'] : 0;
}
update_post_meta( $new_topic_id, $meta_key, $topic_settings );
}
// course_id and lesson_id meta.
if ( 'course_id' === $meta_key ) {
if ( ! empty( $args['new_course_id'] ) ) {
update_post_meta( $new_topic_id, $meta_key, $args['new_course_id'] );
} else {
delete_post_meta( $new_topic_id, $meta_key );
}
}
if ( 'lesson_id' === $meta_key ) {
if ( ! empty( $args['new_lesson_id'] ) ) {
update_post_meta( $new_topic_id, $meta_key, $args['new_lesson_id'] );
} else {
delete_post_meta( $new_topic_id, $meta_key );
}
}
// shared steps metadata: clear meta.
$ld_course_prefix = 'ld_course';
if ( substr( $meta_key, 0, strlen( $ld_course_prefix ) ) === $ld_course_prefix ) {
delete_post_meta( $new_topic_id, $meta_key );
}
}
}
}
}
}