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Add Global Trade Identification Numbers (GTINs) to WooCommerce products
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/** | |
* Render the Global Trade Identification Number (GTIN) meta field. | |
*/ | |
function woocommerce_render_gtin_field() { | |
$input = array( | |
'id' => '_gtin', | |
'label' => sprintf( | |
'<abbr title="%1$s">%2$s</abbr>', | |
_x( 'Global Trade Identification Number', 'field label', 'my-theme' ), | |
_x( 'GTIN', 'abbreviated field label', 'my-theme' ) | |
), | |
'value' => get_post_meta( get_the_ID(), '_gtin', true ), | |
'desc_tip' => true, | |
'description' => __( 'Enter the Global Trade Identification Number (UPC, EAN, ISBN, etc.)', 'my-theme' ), | |
); | |
?> | |
<div id="gtin_attr" class="options_group"> | |
<?php woocommerce_wp_text_input( $input ); ?> | |
</div> | |
<?php | |
} | |
add_action( 'woocommerce_product_options_inventory_product_data', 'woocommerce_render_gtin_field' ); | |
/** | |
* Save the product's GTIN number, if provided. | |
* | |
* @param int $product_id The ID of the product being saved. | |
*/ | |
function woocommerce_save_gtin_field( $product_id ) { | |
if ( | |
! isset( $_POST['_gtin'], $_POST['woocommerce_meta_nonce'] ) | |
|| ( defined( 'DOING_AJAX' ) && DOING_AJAX ) | |
|| ! current_user_can( 'edit_products' ) | |
|| ! wp_verify_nonce( $_POST['woocommerce_meta_nonce'], 'woocommerce_save_data' ) | |
) { | |
return; | |
} | |
$gtin = sanitize_text_field( $_POST['_gtin'] ); | |
update_post_meta( $product_id, '_gtin', $gtin ); | |
} | |
add_action( 'woocommerce_process_product_meta','woocommerce_save_gtin_field' ); |
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