Add unique_id field to product

plugins/woocommerce/includes/abstracts/abstract-wc-product.php

@@ -65,6 +65,7 @@ class WC_Product extends WC_Abstract_Legacy_Product {
 		'description'        => '',
 		'short_description'  => '',
 		'sku'                => '',
+		'unique_id'          => '',
 		'price'              => '',
 		'regular_price'      => '',
 		'sale_price'         => '',
@@ -251,7 +252,7 @@ public function get_short_description( $context = 'view' ) {
 	}
 
 	/**
-	 * Get SKU (Stock-keeping unit) - product unique ID.
+	 * Get SKU (Stock-keeping unit).
 	 *
 	 * @param  string $context What the value is for. Valid values are view and edit.
 	 * @return string
@@ -260,6 +261,17 @@ public function get_sku( $context = 'view' ) {
 		return $this->get_prop( 'sku', $context );
 	}
 
+	/**
+	 * Get Unique ID.
+	 *
+	 * @since 9.0.0
+	 * @param  string $context What the value is for. Valid values are view and edit.
+	 * @return string
+	 */
+	public function get_unique_id( $context = 'view' ) {
+		return $this->get_prop( 'unique_id', $context );
+	}
+
 	/**
 	 * Returns the product's active price.
 	 *
@@ -835,6 +847,16 @@ public function set_sku( $sku ) {
 		$this->set_prop( 'sku', $sku );
 	}
 
+	/**
+	 * Set unique_id
+	 *
+	 * @since 9.0.0
+	 * @param string $unique_id Unique ID.
+	 */
+	public function set_unique_id( $unique_id ) {
+		$this->set_prop( 'unique_id', $unique_id );
+	}
+
 	/**
 	 * Set the product's active price.
 	 *

plugins/woocommerce/includes/data-stores/class-wc-product-data-store-cpt.php

@@ -29,6 +29,7 @@ class WC_Product_Data_Store_CPT extends WC_Data_Store_WP implements WC_Object_Da
 	protected $internal_meta_keys = array(
 		'_visibility',
 		'_sku',
+		'_unique_id',
 		'_price',
 		'_regular_price',
 		'_sale_price',
@@ -325,6 +326,7 @@ protected function read_product_data( &$product ) {
 		$post_meta_values  = get_post_meta( $id );
 		$meta_key_to_props = array(
 			'_sku'                   => 'sku',
+			'_unique_id'             => 'unique_id',
 			'_regular_price'         => 'regular_price',
 			'_sale_price'            => 'sale_price',
 			'_price'                 => 'price',
@@ -516,6 +518,7 @@ protected function read_downloads( &$product ) {
 	protected function update_post_meta( &$product, $force = false ) {
 		$meta_key_to_props = array(
 			'_sku'                   => 'sku',
+			'_unique_id'             => 'unique_id',
 			'_regular_price'         => 'regular_price',
 			'_sale_price'            => 'sale_price',
 			'_sale_price_dates_from' => 'date_on_sale_from',

plugins/woocommerce/includes/rest-api/Controllers/Version3/class-wc-rest-products-controller.php

@@ -561,6 +561,11 @@ protected function prepare_object_for_database( $request, $creating = false ) {
 			$product->set_sku( wc_clean( $request['sku'] ) );
 		}
 
+		// Unique ID.
+		if ( isset( $request['unique_id'] ) ) {
+			$product->set_unique_id( wc_clean( $request['unique_id'] ) );
+		}
+
 		// Attributes.
 		if ( isset( $request['attributes'] ) ) {
 			$attributes = array();
@@ -991,6 +996,11 @@ public function get_item_schema() {
 					'type'        => 'string',
 					'context'     => array( 'view', 'edit' ),
 				),
+				'unique_id'             => array(
+					'description' => __( 'Unique identifier.', 'woocommerce' ),
+					'type'        => 'string',
+					'context'     => array( 'view', 'edit' ),
+				),
 				'price'                 => array(
 					'description' => __( 'Current product price.', 'woocommerce' ),
 					'type'        => 'string',
@@ -1662,6 +1672,10 @@ protected function get_product_data( $product, $context = 'view' ) {
 				$data['post_password'] = $product->get_post_password( $context );
 			}
 
+			if ( in_array( 'unique_id', $fields, true ) ) {
+				$data['unique_id'] = $product->get_unique_id( $context );
+			}
+
 			$post_type_obj = get_post_type_object( $this->post_type );
 			if ( is_post_type_viewable( $post_type_obj ) && $post_type_obj->public ) {
 				$permalink_template_requested = in_array( 'permalink_template', $fields, true );

plugins/woocommerce/src/Internal/Features/ProductBlockEditor/ProductTemplates/SimpleProductTemplate.php

@@ -797,11 +797,42 @@ private function add_inventory_group_blocks() {
 				'order' => 10,
 			)
 		);
-		$product_inventory_inner_section->add_block(
+		$inventory_columns                         = $product_inventory_inner_section->add_block(
+			array(
+				'id'        => 'product-inventory-inner-columns',
+				'blockName' => 'core/columns',
+			)
+		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column1',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
 			array(
 				'id'                => 'product-sku-field',
 				'blockName'         => 'woocommerce/product-sku-field',
-				'order'             => 10,
+				'disableConditions' => array(
+					array(
+						'expression' => 'editedProduct.type === "variable"',
+					),
+				),
+			)
+		);
+		$inventory_columns->add_block(
+			array(
+				'id'        => 'product-inventory-inner-column2',
+				'blockName' => 'core/column',
+			)
+		)->add_block(
+			array(
+				'id'                => 'product-unique-id-field',
+				'blockName'         => 'woocommerce/product-text-field',
+				'attributes'        => array(
+					'property' => 'unique_id',
+					'label'    => __( 'GTIN, UPC, EAN or ISBN', 'woocommerce' ),
+					'tooltip'  => __( 'Enter a barcode or any other identifier unique to this product. It can help you list this product on other channels or marketplaces.', 'woocommerce' ),
+				),
 				'disableConditions' => array(
 					array(
 						'expression' => 'editedProduct.type === "variable"',