Adding the DK invoice column to the legacy order table

When using the posts table to store orders, different actions and filters are used than in the new "High-performance order storage", which is currently the default way to store orders.

This uses those "legacy" hooks display the DK invoice number.

src/Hooks/Admin.php

@@ -35,24 +35,10 @@ public function __construct() {
 
 		add_action( 'admin_menu', array( __CLASS__, 'add_menu_page' ) );
 
-		if (
-			(
-				// Superlobal is not passed into anything.
-				// phpcs:ignore WordPress.Security.NonceVerification
-				isset( $_GET['page'] )
-			)
-			&&
-			(
-				// Superlobal is not passed into anything.
-				// phpcs:ignore WordPress.Security.NonceVerification
-				$_GET['page'] === '1984-dk-woo' || $_GET['page'] === 'wc-orders'
-			)
-		) {
-			add_action(
-				'admin_init',
-				array( __CLASS__, 'enqueue_styles_and_scripts' )
-			);
-		}
+		add_action(
+			'admin_init',
+			array( __CLASS__, 'enqueue_styles_and_scripts' )
+		);
 
 		add_action(
 			'current_screen',
@@ -66,13 +52,26 @@ public function __construct() {
 			10
 		);
 
+		add_filter(
+			'manage_edit-shop_order_columns',
+			array( __CLASS__, 'add_dk_invoice_column' ),
+			10
+		);
+
 		add_action(
 			'woocommerce_shop_order_list_table_custom_column',
 			array( __CLASS__, 'dk_invoice_column' ),
 			10,
 			2
 		);
 
+		add_action(
+			'manage_shop_order_posts_custom_column',
+			array( __CLASS__, 'dk_invoice_column' ),
+			10,
+			2
+		);
+
 		if ( Config::get_product_convertion_to_variation_enabled() ) {
 			add_filter(
 				'bulk_actions-edit-product',
@@ -109,13 +108,16 @@ public static function add_dk_invoice_column( array $columns ): array {
 	/**
 	 * Action for the DK Invoice column in the orders table
 	 *
-	 * @param string   $column_name The column name (dk_invoice_id in our case).
-	 * @param WC_Order $wc_order The WooCommerce order.
+	 * @param string       $column_name The column name (dk_invoice_id in our case).
+	 * @param WC_Order|int $wc_order The WooCommerce order.
 	 */
 	public static function dk_invoice_column(
 		string $column_name,
-		WC_Order $wc_order
+		WC_Order|int $wc_order
 	): void {
+		if ( is_int( $wc_order ) ) {
+			$wc_order = wc_get_order( $wc_order );
+		}
 		if ( $column_name === 'dk_invoice_id' ) {
 			$invoice_number = $wc_order->get_meta(
 				'1984_woo_dk_invoice_number',

style/admin.css

@@ -172,21 +172,21 @@ body.woocommerce_page_1984-dk-woo .wrap {
 	display: none;
 }
 
-.wc-orders-list-table .column-dk_invoice_id .dashicons {
+table .column-dk_invoice_id .dashicons {
 	padding: 4px 0px 4px 4px;
 }
 
-.wc-orders-list-table .column-dk_invoice_id .debit_invoice {
+table .column-dk_invoice_id .debit_invoice {
 	color: rgb(0, 120, 60);
 	font-weight: 600;
 }
 
-.wc-orders-list-table .column-dk_invoice_id .credit_invoice {
+table .column-dk_invoice_id .credit_invoice {
 	color: #333;
 	font-weight: 600;
 }
 
-.wc-orders-list-table .column-dk_invoice_id .invoice_error {
+table .column-dk_invoice_id .invoice_error {
 	color: #900;
 	font-weight: 600;
 }