Woocommerce 产品说明添加到订单元

Question

我创建了 textarea 字段来保存 woocommerce 产品备注，如果购物车中有任何产品可用并且有产品备注，我想将这些备注保存到管理员订单中。

// WooCommerce Products Custom Field
add_action( 'woocommerce_product_options_general_product_data', 'woo_add_custom_general_fields' );
function woo_add_custom_general_fields() {
  global $woocommerce, $post;
  echo '<div class="options_group">';
  // Textarea Field
	woocommerce_wp_textarea_input( 
		array( 
			'id'          => 'product_notes', 
			'label'       => __( 'Product Notes', 'woocommerce' ), 
			'placeholder' => 'Enter product notes here.',
			'desc_tip'    => 'true',
			'description' => __( 'Enter product notes here.', 'woocommerce' ) 
		)
	);
  echo '</div>';	
}
// Save Product notes
add_action( 'woocommerce_process_product_meta', 'woo_add_custom_general_fields_save' );
function woo_add_custom_general_fields_save( $post_id ){
	// Textarea
	$woocommerce_textarea = $_POST['product_notes'];
	if( !empty( $woocommerce_textarea ) )
		update_post_meta( $post_id, 'product_notes', esc_html( $woocommerce_textarea ) );
}

Answer 1

好的，我找到了解决方案。

add_action( 'woocommerce_checkout_update_order_meta', 'custom_product_notes_order_meta', 10, 2 );

function custom_product_notes_order_meta( $order_id ) {
	global $woocommerce;
	$i=1; //product counter
	foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $cart_item ) {
    	$product_id = $cart_item['product_id'];    	
    	$product_note = 'product_notes_'.$i++;
    	if( !empty(get_post_meta( $product_id, 'product_notes', true )) ){
    		$product_notes = get_post_meta( $product_id, 'product_notes', true );
    		add_post_meta( $order_id, $product_note, $product_notes );
    	}
   	}
}