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[WordPress Plugin] Nav Menu Exporter and Importer / Export and Import nav menus. Requires WordPress Importer plugin.
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| <?php | |
| /* | |
| Plugin Name: Nav Menu Exporter and Importer | |
| Description: Export and Import nav menus. Requires WordPress Importer plugin | |
| Author: hissy, megumi themes | |
| Version: 0.1 | |
| Text Domain: nav-menu-exporter-importer | |
| License: GPL version 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html | |
| */ | |
| /** | |
| * Exporter | |
| */ | |
| function add_mav_menu_to_export() { | |
| $post_type = get_post_type_object('nav_menu_item'); | |
| ?> | |
| <p><label><input type="radio" name="content" value="<?php echo esc_attr( $post_type->name ); ?>" /> <?php echo esc_html( $post_type->label ); ?></label></p> | |
| <?php | |
| } | |
| add_action('export_filters','add_mav_menu_to_export'); | |
| /** | |
| * Importer | |
| */ | |
| if ( ! defined( 'WP_LOAD_IMPORTERS' ) ) | |
| return; | |
| // Load Importer API | |
| require_once ABSPATH . 'wp-admin/includes/import.php'; | |
| if ( ! class_exists( 'WP_Importer' ) ) { | |
| $class_wp_importer = ABSPATH . 'wp-admin/includes/class-wp-importer.php'; | |
| if ( file_exists( $class_wp_importer ) ) | |
| require $class_wp_importer; | |
| } | |
| // include WXR file parsers | |
| $wordpress_importer = ABSPATH . 'wp-content/plugins/wordpress-importer/wordpress-importer.php'; | |
| if ( file_exists( $wordpress_importer ) ) | |
| require_once $wordpress_importer; | |
| /** | |
| * Nav Menu Importer class | |
| */ | |
| if ( class_exists( 'WP_Import' ) ) { | |
| class Nav_Menu_Importer extends WP_Import { | |
| function dispatch() { | |
| $this->header(); | |
| $step = empty( $_GET['step'] ) ? 0 : (int) $_GET['step']; | |
| switch ( $step ) { | |
| case 0: | |
| $this->greet(); | |
| break; | |
| case 1: | |
| check_admin_referer( 'import-upload' ); | |
| if ( $this->handle_upload() ) { | |
| $file = get_attached_file( $this->id ); | |
| set_time_limit(0); | |
| $this->import( $file ); | |
| } | |
| break; | |
| } | |
| $this->footer(); | |
| } | |
| function greet() { | |
| wp_import_upload_form( add_query_arg('step', 1) ); | |
| } | |
| function import_end() { | |
| wp_import_cleanup( $this->id ); | |
| wp_cache_flush(); | |
| echo '<p>' . __( 'All done.', 'wordpress-importer' ) . ' <a href="' . admin_url() . '">' . __( 'Have fun!', 'wordpress-importer' ) . '</a>' . '</p>'; | |
| } | |
| function import( $file ) { | |
| $this->import_start( $file ); | |
| wp_suspend_cache_invalidation( true ); | |
| // only processing nav menus | |
| $this->process_menus(); | |
| wp_suspend_cache_invalidation( false ); | |
| $this->import_end(); | |
| } | |
| function process_menus() { | |
| $count = 0; | |
| foreach ( $this->posts as $item ) { | |
| $count++; | |
| // check the item is public nav item | |
| if ( 'nav_menu_item' == $item['post_type'] && 'draft' != $item['status'] ) { | |
| $menu_slug = false; | |
| if ( isset($item['terms']) ) { | |
| // loop through terms, assume first nav_menu term is correct menu | |
| foreach ( $item['terms'] as $term ) { | |
| if ( 'nav_menu' == $term['domain'] ) { | |
| $menu_slug = $term['slug']; | |
| break; | |
| } | |
| } | |
| } | |
| // no nav_menu term associated with this menu item | |
| if ( ! $menu_slug ) { | |
| _e( 'Menu item skipped due to missing menu slug', 'wordpress-importer' ); | |
| echo '<br>'; | |
| continue; | |
| } | |
| $menu_id = term_exists( $menu_slug, 'nav_menu' ); | |
| if ( ! $menu_id ) { | |
| printf( __( 'Menu item skipped due to invalid menu slug: %s', 'wordpress-importer' ), esc_html( $menu_slug ) ); | |
| echo '<br>'; | |
| continue; | |
| } else { | |
| $menu_id = is_array( $menu_id ) ? $menu_id['term_id'] : $menu_id; | |
| } | |
| // set postmeta | |
| foreach ( $item['postmeta'] as $meta ) | |
| $$meta['key'] = $meta['value']; | |
| // skip nav item when menu item object is not exists | |
| switch ($_menu_item_type) { | |
| case 'taxonomy': | |
| $_menu_item_object_id = get_term($_menu_item_object_id,$_menu_item_object); | |
| if ($_menu_item_object_id == null || is_wp_error($_menu_item_object_id)) { | |
| printf( __( 'Menu item skipped due to %s is not exists', 'nav-menu-exporter-importer' ), esc_html( $_menu_item_object ) ); | |
| echo '<br>'; | |
| } | |
| break; | |
| case 'post_type': | |
| $_menu_item_object_id = get_post($_menu_item_object_id); | |
| if ($_menu_item_object_id instanceof WP_Post) { | |
| $_menu_item_object_id = $_menu_item_object_id->ID; | |
| unset($_post); | |
| } else { | |
| printf( __( 'Menu item skipped due to %s is not exists', 'nav-menu-exporter-importer' ), esc_html( $_menu_item_object ) ); | |
| echo '<br>'; | |
| } | |
| break; | |
| } | |
| if ($_menu_item_object_id == null || is_wp_error($_menu_item_object_id)) | |
| continue; | |
| // wp_update_nav_menu_item expects CSS classes as a space separated string | |
| $_menu_item_classes = maybe_unserialize( $_menu_item_classes ); | |
| if ( is_array( $_menu_item_classes ) ) | |
| $_menu_item_classes = implode( ' ', $_menu_item_classes ); | |
| $args = array( | |
| 'menu-item-object-id' => $_menu_item_object_id, | |
| 'menu-item-object' => $_menu_item_object, | |
| 'menu-item-parent-id' => $_menu_item_menu_item_parent, | |
| 'menu-item-position' => intval( $item['menu_order'] ), | |
| 'menu-item-type' => $_menu_item_type, | |
| 'menu-item-title' => $item['post_title'], | |
| 'menu-item-url' => $_menu_item_url, | |
| 'menu-item-description' => $item['post_content'], | |
| 'menu-item-attr-title' => $item['post_excerpt'], | |
| 'menu-item-target' => $_menu_item_target, | |
| 'menu-item-classes' => $_menu_item_classes, | |
| 'menu-item-xfn' => $_menu_item_xfn, | |
| 'menu-item-status' => $item['status'] | |
| ); | |
| $r = wp_update_nav_menu_item( $menu_id, 0, $args ); | |
| if ( $r && is_wp_error( $r ) ) { | |
| echo $r->get_error_message(); | |
| echo '<br>'; | |
| } else { | |
| echo '.'; | |
| } | |
| } | |
| } | |
| echo '<br>'; | |
| printf( __( '%s items processed.', 'nav-menu-exporter-importer' ), esc_html( $count ) ); | |
| } | |
| } | |
| // setup importer | |
| $nav_menu_importer = new Nav_Menu_Importer(); | |
| register_importer('nav_menu', __('Nav Menu', 'nav-menu-exporter-importer'), __('Export and Import nav menus. Requires WordPress Importer plugin', 'nav-menu-exporter-importer'), array ($nav_menu_importer, 'dispatch')); | |
| } // class_exists( 'WP_Import' ) |
Hi,
Almost working.
Export is OK (do not update Nav Menu Exporter and Importer).
Import run well (create a menu with same name before) : 87 items processed. But menu is empty.
Anyway thank you,
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save the file as nav-menu-exporter-importer.php and put into wp-content/plugins/wordpress-importer directory. then go into Plugins in Admin Dashboard to activate