woocommerce_register_post_type_shop_coupon │ хук-фильтр │ WC 1.0

Использование

add_filter( 'woocommerce_register_post_type_shop_coupon', 'wp_kama_woocommerce_register_post_type_shop_coupon_filter' );

/**
 * Function for `woocommerce_register_post_type_shop_coupon` filter-hook.
 * 
 * @param  $array 
 *
 * @return 
 */
function wp_kama_woocommerce_register_post_type_shop_coupon_filter( $array ){

	// filter...
	return $array;
}
$array
-

Где вызывается хук

WC_Post_Types::register_post_types()
woocommerce_register_post_type_shop_coupon
woocommerce/includes/class-wc-post-types.php 522-558 
apply_filters(
	'woocommerce_register_post_type_shop_coupon',
	array(
		'labels'              => array(
			'name'                  => __( 'Coupons', 'woocommerce' ),
			'singular_name'         => __( 'Coupon', 'woocommerce' ),
			'menu_name'             => _x( 'Coupons', 'Admin menu name', 'woocommerce' ),
			'add_new'               => __( 'Add coupon', 'woocommerce' ),
			'add_new_item'          => __( 'Add new coupon', 'woocommerce' ),
			'edit'                  => __( 'Edit', 'woocommerce' ),
			'edit_item'             => __( 'Edit coupon', 'woocommerce' ),
			'new_item'              => __( 'New coupon', 'woocommerce' ),
			'view_item'             => __( 'View coupon', 'woocommerce' ),
			'search_items'          => __( 'Search coupons', 'woocommerce' ),
			'not_found'             => __( 'No coupons found', 'woocommerce' ),
			'not_found_in_trash'    => __( 'No coupons found in trash', 'woocommerce' ),
			'parent'                => __( 'Parent coupon', 'woocommerce' ),
			'filter_items_list'     => __( 'Filter coupons', 'woocommerce' ),
			'items_list_navigation' => __( 'Coupons navigation', 'woocommerce' ),
			'items_list'            => __( 'Coupons list', 'woocommerce' ),
		),
		'description'         => __( 'This is where you can add new coupons that customers can use in your store.', 'woocommerce' ),
		'public'              => false,
		'show_ui'             => true,
		'capability_type'     => 'shop_coupon',
		'map_meta_cap'        => true,
		'publicly_queryable'  => false,
		'exclude_from_search' => true,
		'show_in_menu'        => current_user_can( 'edit_others_shop_orders' ) ? 'woocommerce' : true,
		'hierarchical'        => false,
		'rewrite'             => false,
		'query_var'           => false,
		'supports'            => array( 'title' ),
		'show_in_nav_menus'   => false,
		'show_in_admin_bar'   => true,
	)
)

Где используется хук в WooCommerce

woocommerce/src/Internal/Admin/Coupons.php 57 
add_action( 'woocommerce_register_post_type_shop_coupon', array( $this, 'move_coupons' ) );