Automattic\WooCommerce\Admin\API

ProductAttributeTerms::get_custom_attribute_values() │ protected │ WC 1.0

Query custom attribute values by slug.

Method of the class: ProductAttributeTerms{}

No Hooks.

Return

Array. Attribute values, formatted for response.

Usage

// protected - for code of main (parent) or child class
$result = $this->get_custom_attribute_values( $slug );
$slug(string) (required)
Attribute slug.

ProductAttributeTerms::get_custom_attribute_values() code WC 9.7.1

woocommerce/src/Admin/API/ProductAttributeTerms.php 
protected function get_custom_attribute_values( $slug ) {
	global $wpdb;

	if ( empty( $slug ) ) {
		return array();
	}

	$attribute_values = array();

	// Get the attribute properties.
	$attribute = $this->get_custom_attribute_by_slug( $slug );

	if ( is_wp_error( $attribute ) ) {
		return $attribute;
	}

	// Find all attribute values assigned to products.
	$query_results = $wpdb->get_results(
		$wpdb->prepare(
			"SELECT meta_value, COUNT(meta_id) AS product_count
			FROM {$wpdb->postmeta}
			WHERE meta_key = %s
			AND meta_value != ''
			GROUP BY meta_value",
			'attribute_' . esc_sql( $slug )
		),
		OBJECT_K
	);

	// Ensure all defined properties are in the response.
	$defined_values = wc_get_text_attributes( $attribute[ $slug ]['value'] );

	foreach ( $defined_values as $defined_value ) {
		if ( array_key_exists( $defined_value, $query_results ) ) {
			continue;
		}

		$query_results[ $defined_value ] = (object) array(
			'meta_value'    => $defined_value, // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_value
			'product_count' => 0,
		);
	}

	foreach ( $query_results as $term_value => $term ) {
		// Mimic the structure of a taxonomy-backed attribute values for response.
		$data = array(
			'id'          => $term_value,
			'name'        => $term_value,
			'slug'        => $term_value,
			'description' => '',
			'menu_order'  => 0,
			'count'       => (int) $term->product_count,
		);

		$response = rest_ensure_response( $data );
		$response->add_links(
			array(
				'collection' => array(
					'href' => rest_url(
						$this->namespace . '/products/attributes/' . $slug . '/terms'
					),
				),
			)
		);
		$response = $this->prepare_response_for_collection( $response );

		$attribute_values[ $term_value ] = $response;
	}

	return array_values( $attribute_values );
}