Để thêm custom taxonomy vào website WordPress, bạn thêm đoạn code sau vào file functions.php của theme hoặc child theme:
// your-theme/functions.php
//hook into the init action and call create_book_taxonomies when it fires
add_action( 'init', 'register_language_taxonomy', 0 );
//create a custom taxonomy name it topics for your posts
function register_language_taxonomy() {
// Add new taxonomy, make it hierarchical like categories
//first do the translations part for GUI
$labels = array(
'name' => _x( 'Dev Languages', 'Developer languages' ),
'singular_name' => _x( 'Dev Language', 'Developer language' ),
'search_items' => __( 'Search Dev Language' ),
'all_items' => __( 'All Dev Languages' ),
'popular_items' => __('Popular Dev Languages'),
'parent_item' => __( 'Parent Dev Language' ),
'parent_item_colon' => __( 'Parent Dev Language:' ),
'edit_item' => __( 'Edit Dev Language' ),
'update_item' => __( 'Update DevLanguage' ),
'add_new_item' => __( 'Add New Dev Language' ),
'new_item_name' => __( 'New Dev Language Name' ),
'menu_name' => __( 'Dev Languages' ),
);
// Now register the taxonomy
register_taxonomy('languages',array('post'), array(
'hierarchical' => false,
'labels' => $labels,
'show_ui' => true,
'show_admin_column' => true,
'update_count_callback' => '_update_post_term_count',
'query_var' => true,
'rewrite' => array( 'slug' => 'language' ),
'show_in_rest' => true
));
}Trong đoạn code trên mình đã thêm 1 custom taxonomy mới tên là Dev Languages
Tham khảo: codex.wordpress.org
