CPT范畴层次结构

Question

我正在研究一个_products目录的WP主题。我遇到了一个问题，我的CTP有多个子类别，例如：

Vehicle -> Vehicle type -> Vehicle type -> Vehicle year -> Vehicle或

Car -> SUV -> VW -> 2018 -> T-Roc

我怎样才能创造出这样的结构？就目前而言，我的functions.php看起来是：

 _x( 'Cars', 'Post Type General Name', 'twentythirteen' ),
        'singular_name'       => _x( 'Car', 'Post Type Singular Name', 'twentythirteen' ),
        'menu_name'           => __( 'Cars', 'twentythirteen' ),
        'parent_item_colon'   => __( 'Parent Car', 'twentythirteen' ),
        'all_items'           => __( 'All Cars', 'twentythirteen' ),
        'view_item'           => __( 'View Car', 'twentythirteen' ),
        'add_new_item'        => __( 'Add New Car', 'twentythirteen' ),
        'add_new'             => __( 'Add New', 'twentythirteen' ),
        'edit_item'           => __( 'Edit Car', 'twentythirteen' ),
        'update_item'         => __( 'Update Car', 'twentythirteen' ),
        'search_items'        => __( 'Search Car', 'twentythirteen' ),
        'not_found'           => __( 'Not Found', 'twentythirteen' ),
        'not_found_in_trash'  => __( 'Not found in Trash', 'twentythirteen' ),
    );

    $args = array(
        'label'               => __( 'cars', 'twentythirteen' ),
        'description'         => __( 'Cars news and reviews', 'twentythirteen' ),
        'labels'              => $labels,
        'supports'            => array( 'title', 'editor', 'excerpt', 'author', 'thumbnail', 'comments', 'revisions', 'custom-fields', ),
        'taxonomies'          => array( 'category' ),
        'hierarchical'        => false,
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'show_in_nav_menus'   => true,
        'show_in_admin_bar'   => true,
        'menu_position'       => 5,
        'can_export'          => true,
        'has_archive'         => true,
        'exclude_from_search' => false,
        'publicly_queryable'  => true,
        'capability_type'     => 'page',
    );
    register_post_type( 'cars', $args );
}

add_action( 'init', 'custom_post_type', 0 );

?>

Answer 1

如果您试图创建有关自定义post类型的层次结构，则需要在所需post类型的更抽象版本上注册自定义分类法。

例如，不要命名自定义post类型cars，而是将其命名为vehicle。然后，您可以使用register_taxonomy()注册一个分层分类法。在custom_post_type()中，您可以按以下方式调用register_taxonomy()：

function custom_post_type() {
   // ... update labels to be more 'vehicle' friendly

   $args = [
     // ...
     'taxonomies' => [ 'vehicle_type' ] // name of the new taxonomy you'll be creating
     // ...
   ];

   register_post_type( 'vehicle', $args );

   $taxonomy_labels = [
     // ... entries here are very similar to labels for `register_post_type`
   ];

   $taxonomy_args = [
     'labels'       => $taxonomy_labels,
     'hierarchical' => TRUE // gives taxonomy a "category" like structure
   ];

   register_taxonomy( 'vehicle_type', $taxonomy_args );
}

add_action( 'init', 'custom_post_type', 0 );

注意：传入register_taxonomy()的名称必须与args数组中registered post type()调用vehicle的条目相同。

有关register_taxonomy的更多信息，请参见这里。

希望这能有所帮助。

Answer 2

WordPress不支持嵌套的post类型。请参阅：自定义分类法