WC_AJAX::maybe_add_order_item │ private static │ WC 1.0

Add order item via AJAX. This is refactored for better unit testing.

Method of the class: WC_AJAX{}

Hooks from the method

Returns

Array. Fragments to render and notes HTML.

Usage

$result = WC_AJAX::maybe_add_order_item( $order_id, $items, $items_to_add );
$order_id(int) (required)
ID of order to add items to.
$items(string|array) (required)
Existing items in order. Empty string if no items to add.
$items_to_add(array) (required)
Array of items to add.

WC_AJAX::maybe_add_order_item() code WC 10.5.0

woocommerce/includes/class-wc-ajax.php 
private static function maybe_add_order_item( $order_id, $items, $items_to_add ) {
	try {
		$order = wc_get_order( $order_id );

		if ( ! $order ) {
			throw new Exception( __( 'Invalid order', 'woocommerce' ) );
		}

		if ( ! empty( $items ) ) {
			$save_items = array();
			parse_str( $items, $save_items );
			wc_save_order_items( $order->get_id(), $save_items );
		}

		// Add items to order.
		$order_notes = array();
		$added_items = array();

		foreach ( $items_to_add as $item ) {
			if ( ! isset( $item['id'], $item['qty'] ) || empty( $item['id'] ) ) {
				continue;
			}
			$product_id = absint( $item['id'] );
			$qty        = wc_stock_amount( $item['qty'] );
			$product    = wc_get_product( $product_id );

			if ( ! $product ) {
				throw new Exception( __( 'Invalid product ID', 'woocommerce' ) . ' ' . $product_id );
			}
			if ( ProductType::VARIABLE === $product->get_type() ) {
				/* translators: %s product name */
				throw new Exception( sprintf( __( '%s is a variable product parent and cannot be added.', 'woocommerce' ), $product->get_name() ) );
			}
			$validation_error = new WP_Error();
			$validation_error = apply_filters( 'woocommerce_ajax_add_order_item_validation', $validation_error, $product, $order, $qty );

			if ( $validation_error->get_error_code() ) {
				/* translators: %s: error message */
				throw new Exception( sprintf( __( 'Error: %s', 'woocommerce' ), $validation_error->get_error_message() ) );
			}
			$item_id                 = $order->add_product( $product, $qty, array( 'order' => $order ) );
			$item                    = apply_filters( 'woocommerce_ajax_order_item', $order->get_item( $item_id ), $item_id, $order, $product );
			$added_items[ $item_id ] = $item;
			$order_notes[ $item_id ] = $product->get_formatted_name();

			// We do not perform any stock operations here because they will be handled when order is moved to a status where stock operations are applied (like processing, completed etc).

			do_action( 'woocommerce_ajax_add_order_item_meta', $item_id, $item, $order );
		}

		/* translators: %s item name. */
		$order->add_order_note( sprintf( __( 'Added line items: %s', 'woocommerce' ), implode( ', ', $order_notes ) ), false, true, array( 'note_group' => OrderNoteGroup::ORDER_UPDATE ) );

		do_action( 'woocommerce_ajax_order_items_added', $added_items, $order );

		$data = get_post_meta( $order_id );

		$order = wc_get_order( $order_id );

		// Get HTML to return.
		ob_start();
		include __DIR__ . '/admin/meta-boxes/views/html-order-items.php';
		$items_html = ob_get_clean();

		ob_start();
		$notes = wc_get_order_notes( array( 'order_id' => $order_id ) );
		include __DIR__ . '/admin/meta-boxes/views/html-order-notes.php';
		$notes_html = ob_get_clean();

		return array(
			'html'       => $items_html,
			'notes_html' => $notes_html,
		);
	} catch ( Exception $e ) {
		throw $e; // Forward exception to caller.
	}
}