post_parent ) { // test to see if the page has a parent return $post->post_parent; // return the ID of the parent post } else { // there is no parent so ... return false; // ... the answer to the question is false } } } if(!function_exists('bicycleshop_add_menu_parent_class')){ /** * Adds menu-parent-item class to parent elements in menu * * @param array $items menu items * * @return array */ function bicycleshop_add_menu_parent_class( $items ) { $parents = array(); foreach ( $items as $item ) { if ( $item->menu_item_parent && strlen( (string)$item->menu_item_parent ) > 0 ) { $parents[] = (string)$item->menu_item_parent; } } foreach ( $items as $item ) { if ( in_array( (string)$item->ID, $parents, true ) ) { $item->classes[] = 'menu-parent-item'; } } return $items; } } add_filter( 'wp_nav_menu_objects', 'bicycleshop_add_menu_parent_class' ); if(!function_exists('bicycleshop_page_menu')){ /** * Prints side menu for static pages that has parents or children * * @param bool|false $only_check if true then it wont print anything * * @return bool if menu have sub pages */ function bicycleshop_page_menu($only_check = false) { global $post; $there_is_menu = false; $has_children_args = array( 'post_parent' => $post->ID, 'post_status' => 'publish', 'post_type' => 'any', ); $list_pages_params = array( 'child_of' => $post->post_parent, 'sort_column' => 'menu_order', 'depth' => 0, 'title_li' => '' ); if(bicycleshop_is_sub_page()){ if($only_check){ return true; } $there_is_menu = true; } elseif(get_children( $has_children_args )){ if($only_check){ return true; } $list_pages_params['child_of'] = $post->ID; $there_is_menu = true; } //display menu if($there_is_menu){ /** @noinspection PhpIncludeInspection */ get_template_part('advance/walkers/children', 'pages'); $list_pages_params['walker'] = new BICYCLESHOP_list_pages_walker; echo ''; } return false; } }